Network Working Group                                   S. Routhier, Ed.
Request for Comments: 4293                                    April 2006
Obsoletes: 2011, 2465, 2466
Category: Standards Track


                     Management Information Base
                    for the Internet Protocol (IP)

Status of This Memo

  This document specifies an Internet standards track protocol for the
  Internet community, and requests discussion and suggestions for
  improvements.  Please refer to the current edition of the "Internet
  Official Protocol Standards" (STD 1) for the standardization state
  and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

  Copyright (C) The Internet Society (2006).

Abstract

  This memo defines a portion of the Management Information Base (MIB)
  for use with network management protocols in the Internet community.
  In particular, it describes managed objects used for implementations
  of the Internet Protocol (IP) in an IP version independent manner.
  This memo obsoletes RFCs 2011, 2465, and 2466.























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Table of Contents

  1. The Internet-Standard Management Framework ......................2
  2. Revision History ................................................3
  3. Overview ........................................................3
     3.1. Multi-Stack Implementations ................................3
     3.2. Discussion of Tables and Groups ............................3
          3.2.1. General Objects .....................................4
          3.2.2. Interface Tables ....................................4
          3.2.3. IP Statistics Tables ................................4
          3.2.4. Internet Address Prefix Table .......................8
          3.2.5. Internet Address Table ..............................8
          3.2.6. Internet Address Translation Table ..................9
          3.2.7. IPv6 Scope Zone Index Table .........................9
          3.2.8. Default Router Table ................................9
          3.2.9. Router Advertisement Table ..........................9
          3.2.10. ICMP Statistics Tables .............................9
          3.2.11. Conformance and Compliance ........................10
          3.2.12. Deprecated Objects ................................10
  4. Updating Implementations .......................................10
     4.1. Updating an Implementation of the IPv4-only IP-MIB ........11
     4.2. Updating an Implementation of the IPv6-MIB ................12
  5. Definitions ....................................................13
  6. Previous Work .................................................116
  7. References ....................................................116
     7.1. Normative References .....................................116
     7.2. Informative References ...................................117
  8. Security Considerations .......................................118
  9. Acknowledgements ..............................................120
  10. Authors ......................................................120

1.  The Internet-Standard Management Framework

  For a detailed overview of the documents that describe the current
  Internet-Standard Management Framework, please refer to section 7 of
  RFC 3410 [9].

  Managed objects are accessed via a virtual information store, termed
  the Management Information Base or MIB.  MIB objects are generally
  accessed through the Simple Network Management Protocol (SNMP).
  Objects in the MIB are defined using the mechanisms defined in the
  Structure of Management Information (SMI).  This memo specifies a MIB
  module that is compliant to the SMIv2, which is described in STD 58,
  RFC 2578 [1], STD 58, RFC 2579 [2] and STD 58, RFC 2580 [3].







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2.  Revision History

  One of the primary purposes of this revision of the IP MIB is to
  create a single set of objects to describe and manage IP modules in
  an IP version independent manner.  Where RFCs 2465 and 2466 created a
  set of objects independent from RFC 2011, this document merges those
  three documents into a single unified set of objects.  The
  ipSystemStatsTable and ipIfStatsTable tables are examples of updating
  objects to be independent of IP version.  Both of these tables
  contain counters to reflect IP traffic statistics that originated in
  much earlier MIBs and both include an IP address type in order to
  separate the information based on IP version.

  Another purpose of this document is to increase the manageability of
  a node running IPv6 by adding new objects.  Some of these tables,
  such as ipDefaultRouterTable, may be useful on both IPv4 and IPv6
  nodes while others, such as ipv6RouterAdvertTable, are specific to a
  single protocol.

3.  Overview

3.1.  Multi-Stack Implementations

  This MIB does not provide native support for implementations of
  multiple stacks sharing the same address type.  One option for
  supporting such designs is to assign each stack within an address
  type to a separate context.  These contexts could then be selected
  based upon the context name, with the Entity MIB and View-based
  Access Control Model (VACM) Context Table providing methods for
  listing the supported contexts.

3.2.  Discussion of Tables and Groups

  This MIB is composed of a small number of discrete objects and a
  series of tables meant to form the base for managing IPv4 and IPv6
  entities.

  While some of the objects are meant to be included in all entities,
  some of the objects are only conditionally mandatory.  The
  unconditionally mandatory objects are mostly counters for IP and ICMP
  statistics.  The conditionally mandatory objects fall into one of
  several groups: objects for use in higher bandwidth situations,
  objects for use with IPv4, objects for use with IPv6, and objects for
  use on IPv6 routers.  In short, it is not expected that every entity
  will implement all of the objects within this MIB.  The reader should
  consult the conformance and compliance section to determine which
  objects are appropriate for a given entity.




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3.2.1.  General Objects

  In both IPv4 and IPv6, there are only a small number of "knobs" for
  controlling the general IP stack.  Most controls will be in a more
  specific setting, such as for controlling a router or TCP engine.

  This MIB defines a total of three general knobs, only two of which
  are used for both IPv4 and IPv6.

  Objects are included for both protocols to enable or disable
  forwarding and to set limits on the lifetime of a packet (ttl or hop
  count).

  The third knob, the timeout period for reassembling fragments, is
  only defined for IPv4, as IPv6 specifies this value directly.

  Each group of objects is required when implementing their respective
  protocols.

3.2.2.  Interface Tables

  This MIB includes a pair of tables to convey information about the
  IPv4 and IPv6 protocols that is interface specific.

  Special note should be taken of the administrative status objects.
  These are defined to allow each protocol to selectively enable or
  disable interfaces.  These objects can be used in conjunction with
  the ifAdminStatus object to manipulate the interfaces as necessary.
  With these three objects, an interface may be enabled or disabled
  completely, as well as connected to the IPv4 stack, the IPv6 stack or
  both stacks.  Setting ifAdminStatus to "down" should not affect the
  protocol specific status objects.

  Each interface table is required when implementing their respective
  protocols.

3.2.3.  IP Statistics Tables

  The IP statistics tables (ipSystemStatsTable and ipIfStatsTable)
  contain objects to count the number of datagrams and octets that a
  given entity has processed.  Unlike the previous attempt, this
  document uses a single table for multiple address types.  Typically
  the only two types of interest are IPv4 and IPv6; however, the table
  can support other types if necessary.

  The first table, ipSystemStatsTable, conveys system wide information.
  (That is, the various counters are for all interfaces and not a
  specific set of interfaces.)  Its index is formed from a single



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  sub-id that represents the address type for which the statistics were
  counted.

  The second table, ipIfStatsTable, conveys interface specific
  information.  Its index is formed from two sub-ids.  The first
  represents the address type (IPv4 and IPv6), and the interface within
  that address type is represented by the second sub-id.

  The two tables have a similar set of objects that are intended to
  count the same things, except for the difference in granularity.  The
  object ID "ipSystemStatsEntry.2" is reserved in order to align the
  object IDs of the counters in the first table with their counterparts
  in the second table.

  Several objects to note are ipSystemStatsDiscontinuityTime,
  ipIfStatsDiscontinuityTime, ipSystemsStatsRefreshRate, and
  ipIfStatsRefreshRate.  These objects provide information about the
  row in the table more than about the system itself.

  The discontinuity objects allow a management entity to determine if a
  discontinuity event that would invalidate the management entity's
  understanding of the counters has occurred.  The system being re-
  initialized or the interface being cycled are possible examples of a
  discontinuity event.

  The refresh objects allow a management entity to determine a proper
  polling interval for the rest of the objects.

  The following Case diagram represents the general ordering of the
  packet counters.  In order to avoid extra clutter, the prefixes
  "ipSystemStats" and "ipIfStats" have been removed from each of the
  counter names.



















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from                                            from
interface                                       upper
                                                layers

 V                                               V
 |                                               |
 + InReceives (1)                                + OutRequests
 |                                               |
 |                                               |
 +--> InHdrErrors (5)                            +--> OutNoRoutes
 |                                               |
 |                                               |
 +->-+ InMcastPkts (1)                           |
 |   V                                           |
 +-<-+                                           |
 |                                               |
 +->-+ InBcastPkts (1)                           |
 |   V                                           |
 +-<-+                                           |
 |                                               |
 |                                               |
 +--> InTruncatedPkts (5)                        |
 |                                               |
 |                                               |
 +--> InAddrErrors                               |
 |                                               |
 |                                               |
 +--> InDiscards (2)                             |
 |                                               |
 |                                               |





















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 +--------+------->------+----->-----+----->-----+
 |  InForwDatagrams (6)  |   OutForwDatagrams (6)|
 |                       V                       +->-+ OutFragReqds
 |                   InNoRoutes                  |   | (packets)
 / (local packet (3)                             |   |
 |  IF is that of the address                    |   +--> OutFragFails
 |  and may not be the receiving IF)             |   |    (packets)
 |                                               |   |
 |                                               |   V OutFragOks
 |                                               |   | (packets) (7)
 |                                               |   |
 +->-+ ReasmReqds (fragments)                    +-<-+ OutFragCreates
 |   |                                           |       (fragments)
 |   |                                           |
 |   +--> ReasmFails (fragments (4))             +->-+ OutMcastPkts (1)
 |   |                                           |   V
 |   |                                           +-<-+
 +-<-+ ReasmOKs (reassembled packets)            |
 |                                               +->-+ OutBcastPkts (1)
 |                                               |   V
 +--> InUnknownProtos                            +-<-+
 |                                               |
 |                                               |
 +--> InDiscards (2)                             +--> OutDiscards (2)
 |                                               |
 |                                               |
 + InDelivers                                    + OutTransmits (1)
 |                                               |
 V                                               V
to                                              to
upper                                           interface
layers

  (1) The HC counters and octet counters are also found at these points
      but have been left out for clarity.

  (2) The discard counters may increment at any time in the processing
      path.  Packets discarded to the left of InNoRoutes cause the
      InDiscards counter to increment, while those discarded to the
      right are counted in the OutDiscards counters.

  (3) Local packets on the input side are counted on the interface
      associated with their destination address, which may not be the
      interface on which they were received.  This requirement is
      caused by the possibility of losing the original interface during
      processing, especially re-assembly.





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  (4) Some re-assembly algorithms may lose track of the number of
      fragments during processing and so some fragments may not be
      counted in this object.

  (5) InTruncatedPkts should only be incremented if the frame contained
      a valid header but was otherwise shorter than required.  Frames
      that are too short to contain a valid header should be counted as
      InHdrErrors.

  (6) The forwarding objects may be incremented, even for packets that
      originated locally or are destined for the local host, if their
      addresses are such that the local host would need to forward the
      packet to pass it to the correct interface.

  (7) When fragmenting a packet, an entity should increment the
      OutFragFails counter, rather than the OutDiscards counter, in
      order to preserve the equation FragOks + FragFails == FragRqds.

  The objects in both tables are spread amongst several conformance
  groups based on the bandwidth required to wrap the counters within an
  hour.  The base system group is mandatory for all entities.  The
  other system groups are optional depending on bandwidth.  The
  interface specific-groups are optional.

3.2.4.  Internet Address Prefix Table

  This table provides information about the prefixes this entity is
  using, including their lifetimes.  This table provides a convenient
  place to which other tables that make use of prefixes, such as the
  ipAddressTable, may point.  By including this table, the MIB can
  supply the prefix information for all addresses, yet minimize the
  amount of duplication required in storing and accessing this data.
  This arrangement also clarifies the relationship between addresses
  that have the same prefix.

  This table is required for IPv6 entities.

3.2.5.  Internet Address Table

  This table lists the IP addresses (both IPv4 and IPv6) used by this
  entity.  It also includes some basic information about how and when
  the address was formed and last updated.  This table allows a manager
  to determine who a given entity thinks it is.

  This table is required for all IP entities.






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3.2.6.  Internet Address Translation Table

  This table provides a mapping between IP layer addresses and physical
  addresses as would be formed by either Address Resolution Protocol
  (ARP) for IPv4 or the neighbor discovery protocol for IPv6.

3.2.7.  IPv6 Scope Zone Index Table

  This table specifies the zone index to interface mapping.  By
  examining the table, a manager can determine which groups of
  interfaces are within a particular zone for a given scope.

  The zone index information is only valid within a given entity; the
  indexes used on one entity may not be comparable to those used on a
  different entity.

  This table is required for IPv6 entities.

3.2.8.  Default Router Table

  This table lists the default routers known to this entity.  This
  table is intended to be a simple list to display the information that
  end nodes may have been configured with or acquired through a simple
  system such as IPv6 router advertisements.  Managers attempting to
  view more complicated routing information should examine the routing
  specific tables from other MIBs.

  This table is required for all entities.

3.2.9.  Router Advertisement Table

  This table contains the non-routing information that an IPv6 router
  would use in constructing a router advertisement message.  It does
  not contain information about the prefixes or other routing specific
  information that the router might advertise.  The router should
  acquire such information from either the routing tables or from some
  routing table specific MIB.

  This table is only required for IPv6 router entities.

3.2.10.  ICMP Statistics Tables

  There are two sets of statistics for ICMP.  The first contains a
  simple set of counters to track the number of ICMP messages and
  errors processed by this entity.






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  The second supplies more detail about the ICMP messages processed by
  this entity.  Its index is formed from two sub-ids.  The first
  represents the address type (IPv4 and IPv6), and the second
  represents the particular message type being counted.  A given row
  need not be instantiated unless a message of that type has been
  processed, i.e., the row for icmpMsgStatsType=X MAY be instantiated
  before but MUST be instantated after the first message with Type=X is
  received or transmitted.  After receiving or transmitting any
  succeeding messages with Type=X, the relevant counter must be
  incremented.

  Both of these tables are required for all entities.

3.2.11.  Conformance and Compliance

  This MIB contains several sets of objects.  Some of these sets are
  useful on all types of entities, while others are only useful on a
  limited subset of entities.  The conformance section attempts to
  group the objects into sets that may be discussed as units, and the
  compliance section then details which of these units are required in
  various circumstances.

  The circumstances used in the compliance section are implementing
  IPv4, IPv6, or IPv6 router functions and having a bandwidth of less
  than 20MB, between 20MB and 650MB, or greater than 650MB.

3.2.12.  Deprecated Objects

  This MIB also includes a set of deprecated objects from previous
  iterations.  They are included as part of the historical record.

4.  Updating Implementations

  There are several general classes of change that are required.

  The first and most major change is that most of the previous objects
  have different object IDs and additional indexes to support the
  possibility of different address types.  The general counters for IP
  and ICMP are examples of this.  They have been moved to the
  ipSystemStatsTable and icmpMsgStatsTable, respectively.

  The second change is the extension of all address objects to allow
  for both IPv4 and IPv6 addresses and the addition of an address type
  object to specify what address type is in use.

  The third change is the addition of several new objects to the
  replacement for a previously existing table such as ipNetToPhysical.




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  The fourth change is the addition of completely new tables such as
  ipIfStatsTable and ipDefaultRouterTable.  The first is based on the
  previous statistics groups, while the second is completely new to
  this MIB.

4.1.  Updating an Implementation of the IPv4-only IP-MIB

  The somewhat more specific changes that are required for IPv4 follow.
  Note well:  this is not meant to be an exhaustive list and the reader
  should examine the MIB for full details.

  Several of the general objects (ipForwarding, ipDefaultTTL,
  ipReasmTimeout) remain unchanged.

  Most of the rest of the general objects were counters and have been
  moved into the ipSystemStatsTable.  The basic instrumentation should
  remain the same, though the object definitions should be checked for
  clarifications.  If they aren't already in a structure, putting the
  counter variables in one would be useful.  Several new objects have
  been added to count additional items, and instrumentation code must
  be added for these objects.  Finally, the SNMP routines must be
  updated to handle the new indexing.

  In addition to the ipSystemStatsTable, the MIB includes the
  ipIfStatsTable.  This table counts the same items as the system table
  but does so on a per interface basis.  It is optional and may be
  ignored.  If you decide to implement it, you may wish to arrange to
  collect the data on a per-interface basis and then sum those counters
  in order to provide the aggregate system level statistics.  However,
  if you choose to provide the system level statistics by summing the
  interface level counters, no interface level statistics can be lost -
  if an interface is removed, the statistics associated with it must be
  retained.

  The ipAddrTable has, loosely, been converted to the ipAddressTable.
  While the general idea remains the same, the ipAddressTable is
  sufficiently different that writing new code may be easier than
  updating old code.  The primary difference is the addition of several
  new objects.  In addition, the ipAdEntReasmMaxSize has been moved to
  another table, ipv4InterfaceTable.  As above, the SNMP routines will
  need to be updated to handle the new indexing.

  The ipNetToMediaTable has been moved to the ipNetToPhysicalTable.
  These tables are fairly similar and updating the old code may be
  straightforward.  As above, the SNMP routines will need to be updated
  to handle the new indexing.





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  Two new tables, ipv4InterfaceTable and ipDefaultRouterTable, are
  required as well as several new ICMP counters.

  Finally, there are several tables that are required for IPv6 but are
  optional for IPv4 that you may elect to implement.

4.2.  Updating an Implementation of the IPv6-MIB

  The somewhat more specific changes that are required for IPv6 follow.
  Note well:  this is not meant to be an exhaustive list and the reader
  should examine the MIB for full details.

  Two of the general objects, ipv6Forwarding and ipv6DefaultHopLimit,
  have been renamed and given new object identifiers within the ip
  branch but are otherwise unchanged.  The new names are
  ipv6IpForwarding and ipv6IpDefaultHopLimit.

  While there is an ipv6InterfaceTable that contains some of the pieces
  from the ipv6IfTable, the two are somewhat different in concept.  The
  ipv6IfTable was meant to replicate the ifTable while the
  ipv6InterfaceTable is meant to be an addition to the ifTable.  As
  such, items that were duplicated between the ifTable and ipv6IfTable
  have been removed and some new objects added.

  The ipv6IfStatsTable most closely resembles the ipIfStatsTable with
  an additional index for the address type and most of the
  instrumentation should be re-usable.  Some new objects have been
  added to the ipIfStatsTable.  As above, the SNMP routines will need
  to be updated to handle the new indexing.  Finally, the
  ipIfStatsTable is optional and may be ignored.

  The ipSystemStatsTable is effectively new, but it may be able to make
  use of most of the instrumentation from the old ipv6IfStatsTable.  As
  with the IPv4 discussion, one implementation strategy would be to
  count the statistics for the ipIfStatsTable and aggregate them when
  queried for this table.  Again, as with the IPv4 discussion, this
  strategy only works if the interfaces cannot be removed or if the
  statistics for removed interfaces are somehow retained.

  The ipv6AddrPrefixTable is now the ipAddressPrefixTable.  The new
  table contains an extra object and the additional index required for
  IPv4 compatibility.  As above, the SNMP routines will need to be
  updated to handle the new indexing.

  The ipAddressTable is loosely based on the ipv6AddrTable but has
  changed considerably with the addition of several new objects and the
  removal of one of its indexes.




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  The IPv6 routing information (ipv6RouteNumber, ipv6DiscardedRoutes,
  and ipv6RouteTable) has been removed from this MIB.  The replacements
  or updates for this information is in the update to the IP Forwarding
  Table MIB [16].  The ipv6NetToMediaTable has been converted to the
  ipNetToPhysicalTable.  The new table contains an extra object and the
  additional index required for IPv4 compatibility.  As above, the SNMP
  routines will need to be updated to handle the new indexing.

  The ICMP tables have been substantially changed.  The previous tables
  required counting on a per-message and per-interface basis.  The new
  tables only require counting on a per-message, per-protocol basis and
  include an aggregate of all messages on a per-protocol basis.

  In addition to the above, several new tables have been added.  Both
  the ipv6ScopeZoneIndexTable and ipDefaultRouterTable are required on
  all IPv6 entities.  The ipv6RouterAdvertTable is only required on
  IPv6 routers.

5.  Definitions

  The following MIB module imports from the IF-MIB [6] and the INET-
  ADDRESS-MIB [7] and references Neighbor Discovery [4], the IPv6
  Stateless Address Autoconfiguration protocol [5], the Default Router
  Preferences document [8], ARP [10] and the IPv6 address architecture
  document [17].

IP-MIB DEFINITIONS ::= BEGIN

IMPORTS
   MODULE-IDENTITY, OBJECT-TYPE,
   Integer32, Counter32, IpAddress,
   mib-2, Unsigned32, Counter64,
   zeroDotZero                        FROM SNMPv2-SMI
   PhysAddress, TruthValue,
   TimeStamp, RowPointer,
   TEXTUAL-CONVENTION, TestAndIncr,
   RowStatus, StorageType             FROM SNMPv2-TC
   MODULE-COMPLIANCE, OBJECT-GROUP    FROM SNMPv2-CONF
   InetAddress, InetAddressType,
   InetAddressPrefixLength,
   InetVersion, InetZoneIndex         FROM INET-ADDRESS-MIB
   InterfaceIndex                     FROM IF-MIB;

ipMIB MODULE-IDENTITY
   LAST-UPDATED "200602020000Z"
   ORGANIZATION "IETF IPv6 MIB Revision Team"
   CONTACT-INFO
          "Editor:



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           Shawn A. Routhier
           Interworking Labs
           108 Whispering Pines Dr. Suite 235
           Scotts Valley, CA 95066
           USA
           EMail: <[email protected]>"
   DESCRIPTION
          "The MIB module for managing IP and ICMP implementations, but
           excluding their management of IP routes.

           Copyright (C) The Internet Society (2006).  This version of
           this MIB module is part of RFC 4293; see the RFC itself for
           full legal notices."

   REVISION      "200602020000Z"
   DESCRIPTION
          "The IP version neutral revision with added IPv6 objects for
           ND, default routers, and router advertisements.  As well as
           being the successor to RFC 2011, this MIB is also the
           successor to RFCs 2465 and 2466.  Published as RFC 4293."

   REVISION      "199411010000Z"
   DESCRIPTION
          "A separate MIB module (IP-MIB) for IP and ICMP management
           objects.  Published as RFC 2011."

   REVISION      "199103310000Z"
   DESCRIPTION
          "The initial revision of this MIB module was part of MIB-II,
           which was published as RFC 1213."
   ::= { mib-2 48}

--
-- The textual conventions we define and use in this MIB.
--

IpAddressOriginTC ::= TEXTUAL-CONVENTION
   STATUS     current
   DESCRIPTION
          "The origin of the address.

           manual(2) indicates that the address was manually configured
           to a specified address, e.g., by user configuration.

           dhcp(4) indicates an address that was assigned to this
           system by a DHCP server.

           linklayer(5) indicates an address created by IPv6 stateless



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           auto-configuration.

           random(6) indicates an address chosen by the system at
           random, e.g., an IPv4 address within 169.254/16, or an RFC
           3041 privacy address."
   SYNTAX     INTEGER {
       other(1),
       manual(2),
       dhcp(4),
       linklayer(5),
       random(6)
   }

IpAddressStatusTC ::= TEXTUAL-CONVENTION
   STATUS     current
   DESCRIPTION
          "The status of an address.  Most of the states correspond to
           states from the IPv6 Stateless Address Autoconfiguration
           protocol.

           The preferred(1) state indicates that this is a valid
           address that can appear as the destination or source address
           of a packet.

           The deprecated(2) state indicates that this is a valid but
           deprecated address that should no longer be used as a source
           address in new communications, but packets addressed to such
           an address are processed as expected.

           The invalid(3) state indicates that this isn't a valid
           address and it shouldn't appear as the destination or source
           address of a packet.

           The inaccessible(4) state indicates that the address is not
           accessible because the interface to which this address is
           assigned is not operational.

           The unknown(5) state indicates that the status cannot be
           determined for some reason.

           The tentative(6) state indicates that the uniqueness of the
           address on the link is being verified.  Addresses in this
           state should not be used for general communication and
           should only be used to determine the uniqueness of the
           address.

           The duplicate(7) state indicates the address has been
           determined to be non-unique on the link and so must not be



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           used.

           The optimistic(8) state indicates the address is available
           for use, subject to restrictions, while its uniqueness on
           a link is being verified.

           In the absence of other information, an IPv4 address is
           always preferred(1)."
   REFERENCE "RFC 2462"
   SYNTAX     INTEGER {
       preferred(1),
       deprecated(2),
       invalid(3),
       inaccessible(4),
       unknown(5),
       tentative(6),
       duplicate(7),
       optimistic(8)
   }

IpAddressPrefixOriginTC ::= TEXTUAL-CONVENTION
   STATUS     current
   DESCRIPTION
          "The origin of this prefix.

           manual(2) indicates a prefix that was manually configured.

           wellknown(3) indicates a well-known prefix, e.g., 169.254/16
           for IPv4 auto-configuration or fe80::/10 for IPv6 link-local
           addresses.  Well known prefixes may be assigned by IANA,
           the address registries, or by specification in a standards
           track RFC.

           dhcp(4) indicates a prefix that was assigned by a DHCP
           server.

           routeradv(5) indicates a prefix learned from a router
           advertisement.

           Note: while IpAddressOriginTC and IpAddressPrefixOriginTC
           are similar, they are not identical.  The first defines how
           an address was created, while the second defines how a
           prefix was found."
   SYNTAX     INTEGER {
       other(1),
       manual(2),
       wellknown(3),
       dhcp(4),



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       routeradv(5)
   }

Ipv6AddressIfIdentifierTC ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "2x:"
    STATUS       current
    DESCRIPTION
      "This data type is used to model IPv6 address
      interface identifiers.  This is a binary string
      of up to 8 octets in network byte-order."
    SYNTAX      OCTET STRING (SIZE (0..8))

--
-- the IP general group
-- some objects that affect all of IPv4
--

ip       OBJECT IDENTIFIER ::= { mib-2 4 }

ipForwarding OBJECT-TYPE
   SYNTAX     INTEGER {
                   forwarding(1),    -- acting as a router
                   notForwarding(2)  -- NOT acting as a router
              }
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
          "The indication of whether this entity is acting as an IPv4
           router in respect to the forwarding of datagrams received
           by, but not addressed to, this entity.  IPv4 routers forward
           datagrams.  IPv4 hosts do not (except those source-routed
           via the host).

           When this object is written, the entity should save the
           change to non-volatile storage and restore the object from
           non-volatile storage upon re-initialization of the system.
           Note: a stronger requirement is not used because this object
           was previously defined."
   ::= { ip 1 }

ipDefaultTTL OBJECT-TYPE
   SYNTAX     Integer32 (1..255)
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
          "The default value inserted into the Time-To-Live field of
           the IPv4 header of datagrams originated at this entity,
           whenever a TTL value is not supplied by the transport layer



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           protocol.

           When this object is written, the entity should save the
           change to non-volatile storage and restore the object from
           non-volatile storage upon re-initialization of the system.
           Note: a stronger requirement is not used because this object
           was previously defined."
   ::= { ip 2 }

ipReasmTimeout OBJECT-TYPE
   SYNTAX     Integer32
   UNITS      "seconds"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The maximum number of seconds that received fragments are
           held while they are awaiting reassembly at this entity."
   ::= { ip 13 }

--
-- the IPv6 general group
-- Some objects that affect all of IPv6
--

ipv6IpForwarding OBJECT-TYPE
   SYNTAX     INTEGER {
                   forwarding(1),    -- acting as a router
                   notForwarding(2)  -- NOT acting as a router
              }
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
          "The indication of whether this entity is acting as an IPv6
           router on any interface in respect to the forwarding of
           datagrams received by, but not addressed to, this entity.
           IPv6 routers forward datagrams.  IPv6 hosts do not (except
           those source-routed via the host).

           When this object is written, the entity SHOULD save the
           change to non-volatile storage and restore the object from
           non-volatile storage upon re-initialization of the system."
   ::= { ip 25 }

ipv6IpDefaultHopLimit OBJECT-TYPE
   SYNTAX     Integer32 (0..255)
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION



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          "The default value inserted into the Hop Limit field of the
           IPv6 header of datagrams originated at this entity whenever
           a Hop Limit value is not supplied by the transport layer
           protocol.

           When this object is written, the entity SHOULD save the
           change to non-volatile storage and restore the object from
           non-volatile storage upon re-initialization of the system."
   REFERENCE "RFC 2461 Section 6.3.2"
   ::= { ip 26 }

--
-- IPv4 Interface Table
--

ipv4InterfaceTableLastChange OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The value of sysUpTime on the most recent occasion at which
           a row in the ipv4InterfaceTable was added or deleted, or
           when an ipv4InterfaceReasmMaxSize or an
           ipv4InterfaceEnableStatus object was modified.

           If new objects are added to the ipv4InterfaceTable that
           require the ipv4InterfaceTableLastChange to be updated when
           they are modified, they must specify that requirement in
           their description clause."
   ::= { ip 27 }

ipv4InterfaceTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF Ipv4InterfaceEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table containing per-interface IPv4-specific
           information."
   ::= { ip 28 }

ipv4InterfaceEntry OBJECT-TYPE
   SYNTAX     Ipv4InterfaceEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "An entry containing IPv4-specific information for a specific
           interface."
   INDEX { ipv4InterfaceIfIndex }



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   ::= { ipv4InterfaceTable 1 }

Ipv4InterfaceEntry ::= SEQUENCE {
       ipv4InterfaceIfIndex         InterfaceIndex,
       ipv4InterfaceReasmMaxSize    Integer32,
       ipv4InterfaceEnableStatus    INTEGER,
       ipv4InterfaceRetransmitTime  Unsigned32
   }

ipv4InterfaceIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface to
           which this entry is applicable.  The interface identified by
           a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipv4InterfaceEntry 1 }

ipv4InterfaceReasmMaxSize OBJECT-TYPE
   SYNTAX     Integer32 (0..65535)
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The size of the largest IPv4 datagram that this entity can
           re-assemble from incoming IPv4 fragmented datagrams received
           on this interface."
   ::= { ipv4InterfaceEntry 2 }

ipv4InterfaceEnableStatus OBJECT-TYPE
   SYNTAX     INTEGER {
                up(1),
                down(2)
   }
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
          "The indication of whether IPv4 is enabled (up) or disabled
           (down) on this interface.  This object does not affect the
           state of the interface itself, only its connection to an
           IPv4 stack.  The IF-MIB should be used to control the state
           of the interface."
   ::= { ipv4InterfaceEntry 3 }

ipv4InterfaceRetransmitTime OBJECT-TYPE
   SYNTAX     Unsigned32
   UNITS      "milliseconds"



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   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The time between retransmissions of ARP requests to a
           neighbor when resolving the address or when probing the
           reachability of a neighbor."
   REFERENCE "RFC 1122"
   DEFVAL { 1000 }
   ::= { ipv4InterfaceEntry 4 }

--
-- v6 interface table
--

ipv6InterfaceTableLastChange OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The value of sysUpTime on the most recent occasion at which
           a row in the ipv6InterfaceTable was added or deleted or when
           an ipv6InterfaceReasmMaxSize, ipv6InterfaceIdentifier,
           ipv6InterfaceEnableStatus, ipv6InterfaceReachableTime,
           ipv6InterfaceRetransmitTime, or ipv6InterfaceForwarding
           object was modified.

           If new objects are added to the ipv6InterfaceTable that
           require the ipv6InterfaceTableLastChange to be updated when
           they are modified, they must specify that requirement in
           their description clause."
   ::= { ip 29 }

ipv6InterfaceTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF Ipv6InterfaceEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table containing per-interface IPv6-specific
           information."
   ::= { ip 30 }

ipv6InterfaceEntry OBJECT-TYPE
   SYNTAX     Ipv6InterfaceEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "An entry containing IPv6-specific information for a given
           interface."



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   INDEX { ipv6InterfaceIfIndex }
   ::= { ipv6InterfaceTable 1 }

Ipv6InterfaceEntry ::= SEQUENCE {
       ipv6InterfaceIfIndex         InterfaceIndex,
       ipv6InterfaceReasmMaxSize    Unsigned32,
       ipv6InterfaceIdentifier      Ipv6AddressIfIdentifierTC,
       ipv6InterfaceEnableStatus    INTEGER,
       ipv6InterfaceReachableTime   Unsigned32,
       ipv6InterfaceRetransmitTime  Unsigned32,
       ipv6InterfaceForwarding      INTEGER
   }

ipv6InterfaceIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface to
           which this entry is applicable.  The interface identified by
           a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipv6InterfaceEntry 1 }

ipv6InterfaceReasmMaxSize OBJECT-TYPE
   SYNTAX     Unsigned32 (1500..65535)
   UNITS      "octets"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The size of the largest IPv6 datagram that this entity can
           re-assemble from incoming IPv6 fragmented datagrams received
           on this interface."
   ::= { ipv6InterfaceEntry 2 }

ipv6InterfaceIdentifier OBJECT-TYPE
   SYNTAX     Ipv6AddressIfIdentifierTC
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The Interface Identifier for this interface.  The Interface
           Identifier is combined with an address prefix to form an
           interface address.

           By default, the Interface Identifier is auto-configured
           according to the rules of the link type to which this
           interface is attached.




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           A zero length identifier may be used where appropriate.  One
           possible example is a loopback interface."
   ::= { ipv6InterfaceEntry 3 }

-- This object ID is reserved as it was used in earlier versions of
-- the MIB module.  In theory, OIDs are not assigned until the
-- specification is released as an RFC; however, as some companies
-- may have shipped code based on earlier versions of the MIB, it
-- seems best to reserve this OID.  This OID had been
-- ipv6InterfacePhysicalAddress.
-- ::= { ipv6InterfaceEntry 4}

ipv6InterfaceEnableStatus OBJECT-TYPE
   SYNTAX     INTEGER {
                up(1),
                down(2)
   }
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
          "The indication of whether IPv6 is enabled (up) or disabled
           (down) on this interface.  This object does not affect the
           state of the interface itself, only its connection to an
           IPv6 stack.  The IF-MIB should be used to control the state
           of the interface.

           When this object is written, the entity SHOULD save the
           change to non-volatile storage and restore the object from
           non-volatile storage upon re-initialization of the system."
   ::= { ipv6InterfaceEntry 5 }

ipv6InterfaceReachableTime OBJECT-TYPE
   SYNTAX     Unsigned32
   UNITS      "milliseconds"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The time a neighbor is considered reachable after receiving
           a reachability confirmation."
   REFERENCE "RFC 2461, Section 6.3.2"
   ::= { ipv6InterfaceEntry 6 }

ipv6InterfaceRetransmitTime OBJECT-TYPE
   SYNTAX     Unsigned32
   UNITS      "milliseconds"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION



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          "The time between retransmissions of Neighbor Solicitation
           messages to a neighbor when resolving the address or when
           probing the reachability of a neighbor."
   REFERENCE "RFC 2461, Section 6.3.2"
   ::= { ipv6InterfaceEntry 7 }

ipv6InterfaceForwarding OBJECT-TYPE
   SYNTAX     INTEGER {
                   forwarding(1),    -- acting as a router
                   notForwarding(2)  -- NOT acting as a router
              }
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
          "The indication of whether this entity is acting as an IPv6
           router on this interface with respect to the forwarding of
           datagrams received by, but not addressed to, this entity.
           IPv6 routers forward datagrams.  IPv6 hosts do not (except
           those source-routed via the host).

           This object is constrained by ipv6IpForwarding and is
           ignored if ipv6IpForwarding is set to notForwarding.  Those
           systems that do not provide per-interface control of the
           forwarding function should set this object to forwarding for
           all interfaces and allow the ipv6IpForwarding object to
           control the forwarding capability.

           When this object is written, the entity SHOULD save the
           change to non-volatile storage and restore the object from
           non-volatile storage upon re-initialization of the system."
   ::= { ipv6InterfaceEntry 8 }

--
-- Per-Interface or System-Wide IP statistics.
--
-- The following two tables, ipSystemStatsTable and ipIfStatsTable,
-- are intended to provide the same counters at different granularities.
-- The ipSystemStatsTable provides system wide counters aggregating
-- the traffic counters for all interfaces for a given address type.
-- The ipIfStatsTable provides the same counters but for specific
-- interfaces rather than as an aggregate.
--
-- Note well: If a system provides both system-wide and interface-
-- specific values, the system-wide value may not be equal to the sum
-- of the interface-specific values across all interfaces due to e.g.,
-- dynamic interface creation/deletion.
--
-- Note well: Both of these tables contain some items that are



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-- represented by two objects, representing the value in either 32
-- or 64 bits.  For those objects, the 32-bit value MUST be the low
-- order 32 bits of the 64-bit value.  Also note that the 32-bit
-- counters must be included when the 64-bit counters are included.

ipTrafficStats OBJECT IDENTIFIER ::= { ip 31 }

ipSystemStatsTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpSystemStatsEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table containing system wide, IP version specific
           traffic statistics.  This table and the ipIfStatsTable
           contain similar objects whose difference is in their
           granularity.  Where this table contains system wide traffic
           statistics, the ipIfStatsTable contains the same statistics
           but counted on a per-interface basis."
   ::= { ipTrafficStats 1 }

ipSystemStatsEntry OBJECT-TYPE
   SYNTAX     IpSystemStatsEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "A statistics entry containing system-wide objects for a
           particular IP version."
   INDEX { ipSystemStatsIPVersion }
   ::= { ipSystemStatsTable 1 }

IpSystemStatsEntry ::= SEQUENCE {
       ipSystemStatsIPVersion           InetVersion,
       ipSystemStatsInReceives          Counter32,
       ipSystemStatsHCInReceives        Counter64,
       ipSystemStatsInOctets            Counter32,
       ipSystemStatsHCInOctets          Counter64,
       ipSystemStatsInHdrErrors         Counter32,
       ipSystemStatsInNoRoutes          Counter32,
       ipSystemStatsInAddrErrors        Counter32,
       ipSystemStatsInUnknownProtos     Counter32,
       ipSystemStatsInTruncatedPkts     Counter32,
       ipSystemStatsInForwDatagrams     Counter32,
       ipSystemStatsHCInForwDatagrams   Counter64,
       ipSystemStatsReasmReqds          Counter32,
       ipSystemStatsReasmOKs            Counter32,
       ipSystemStatsReasmFails          Counter32,
       ipSystemStatsInDiscards          Counter32,
       ipSystemStatsInDelivers          Counter32,



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       ipSystemStatsHCInDelivers        Counter64,
       ipSystemStatsOutRequests         Counter32,
       ipSystemStatsHCOutRequests       Counter64,
       ipSystemStatsOutNoRoutes         Counter32,
       ipSystemStatsOutForwDatagrams    Counter32,
       ipSystemStatsHCOutForwDatagrams  Counter64,
       ipSystemStatsOutDiscards         Counter32,
       ipSystemStatsOutFragReqds        Counter32,
       ipSystemStatsOutFragOKs          Counter32,
       ipSystemStatsOutFragFails        Counter32,
       ipSystemStatsOutFragCreates      Counter32,
       ipSystemStatsOutTransmits        Counter32,
       ipSystemStatsHCOutTransmits      Counter64,
       ipSystemStatsOutOctets           Counter32,
       ipSystemStatsHCOutOctets         Counter64,
       ipSystemStatsInMcastPkts         Counter32,
       ipSystemStatsHCInMcastPkts       Counter64,
       ipSystemStatsInMcastOctets       Counter32,
       ipSystemStatsHCInMcastOctets     Counter64,
       ipSystemStatsOutMcastPkts        Counter32,
       ipSystemStatsHCOutMcastPkts      Counter64,
       ipSystemStatsOutMcastOctets      Counter32,
       ipSystemStatsHCOutMcastOctets    Counter64,
       ipSystemStatsInBcastPkts         Counter32,
       ipSystemStatsHCInBcastPkts       Counter64,
       ipSystemStatsOutBcastPkts        Counter32,
       ipSystemStatsHCOutBcastPkts      Counter64,
       ipSystemStatsDiscontinuityTime   TimeStamp,
       ipSystemStatsRefreshRate         Unsigned32
   }

ipSystemStatsIPVersion OBJECT-TYPE
   SYNTAX     InetVersion
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The IP version of this row."
   ::= { ipSystemStatsEntry 1 }

-- This object ID is reserved to allow the IDs for this table's objects
-- to align with the objects in the ipIfStatsTable.
-- ::= { ipSystemStatsEntry 2 }

ipSystemStatsInReceives OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION



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          "The total number of input IP datagrams received, including
           those received in error.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 3 }

ipSystemStatsHCInReceives OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of input IP datagrams received, including
           those received in error.  This object counts the same
           datagrams as ipSystemStatsInReceives, but allows for larger
           values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 4 }

ipSystemStatsInOctets OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets received in input IP datagrams,
           including those received in error.  Octets from datagrams
           counted in ipSystemStatsInReceives MUST be counted here.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 5 }

ipSystemStatsHCInOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets received in input IP datagrams,
           including those received in error.  This object counts the
           same octets as ipSystemStatsInOctets, but allows for larger



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           values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 6 }

ipSystemStatsInHdrErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams discarded due to errors in
           their IP headers, including version number mismatch, other
           format errors, hop count exceeded, errors discovered in
           processing their IP options, etc.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 7 }

ipSystemStatsInNoRoutes OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams discarded because no route
           could be found to transmit them to their destination.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 8 }

ipSystemStatsInAddrErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams discarded because the IP
           address in their IP header's destination field was not a
           valid address to be received at this entity.  This count
           includes invalid addresses (e.g., ::0).  For entities
           that are not IP routers and therefore do not forward



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           datagrams, this counter includes datagrams discarded
           because the destination address was not a local address.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 9 }

ipSystemStatsInUnknownProtos OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of locally-addressed IP datagrams received
           successfully but discarded because of an unknown or
           unsupported protocol.

           When tracking interface statistics, the counter of the
           interface to which these datagrams were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the datagrams.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 10 }

ipSystemStatsInTruncatedPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams discarded because the
           datagram frame didn't carry enough data.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 11 }

ipSystemStatsInForwDatagrams OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION



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          "The number of input datagrams for which this entity was not
           their final IP destination and for which this entity
           attempted to find a route to forward them to that final
           destination.  In entities that do not act as IP routers,
           this counter will include only those datagrams that were
           Source-Routed via this entity, and the Source-Route
           processing was successful.

           When tracking interface statistics, the counter of the
           incoming interface is incremented for each datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 12 }

ipSystemStatsHCInForwDatagrams OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input datagrams for which this entity was not
           their final IP destination and for which this entity
           attempted to find a route to forward them to that final
           destination.  This object counts the same packets as
           ipSystemStatsInForwDatagrams, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 13 }

ipSystemStatsReasmReqds OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP fragments received that needed to be
           reassembled at this interface.

           When tracking interface statistics, the counter of the
           interface to which these fragments were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the fragments.

           Discontinuities in the value of this counter can occur at



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           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 14 }

ipSystemStatsReasmOKs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP datagrams successfully reassembled.

           When tracking interface statistics, the counter of the
           interface to which these datagrams were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the datagrams.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 15 }

ipSystemStatsReasmFails OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of failures detected by the IP re-assembly
           algorithm (for whatever reason: timed out, errors, etc.).
           Note that this is not necessarily a count of discarded IP
           fragments since some algorithms (notably the algorithm in
           RFC 815) can lose track of the number of fragments by
           combining them as they are received.

           When tracking interface statistics, the counter of the
           interface to which these fragments were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the fragments.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 16 }

ipSystemStatsInDiscards OBJECT-TYPE
   SYNTAX     Counter32



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   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams for which no problems were
           encountered to prevent their continued processing, but
           were discarded (e.g., for lack of buffer space).  Note that
           this counter does not include any datagrams discarded while
           awaiting re-assembly.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 17 }

ipSystemStatsInDelivers OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of datagrams successfully delivered to IP
           user-protocols (including ICMP).

           When tracking interface statistics, the counter of the
           interface to which these datagrams were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the datagrams.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 18 }

ipSystemStatsHCInDelivers OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of datagrams successfully delivered to IP
           user-protocols (including ICMP).  This object counts the
           same packets as ipSystemStatsInDelivers, but allows for
           larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."



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   ::= { ipSystemStatsEntry 19 }

ipSystemStatsOutRequests OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of IP datagrams that local IP user-
           protocols (including ICMP) supplied to IP in requests for
           transmission.  Note that this counter does not include any
           datagrams counted in ipSystemStatsOutForwDatagrams.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 20 }

ipSystemStatsHCOutRequests OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of IP datagrams that local IP user-
           protocols (including ICMP) supplied to IP in requests for
           transmission.  This object counts the same packets as
           ipSystemStatsOutRequests, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 21 }

ipSystemStatsOutNoRoutes OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of locally generated IP datagrams discarded
           because no route could be found to transmit them to their
           destination.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 22 }



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ipSystemStatsOutForwDatagrams OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of datagrams for which this entity was not their
           final IP destination and for which it was successful in
           finding a path to their final destination.  In entities
           that do not act as IP routers, this counter will include
           only those datagrams that were Source-Routed via this
           entity, and the Source-Route processing was successful.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for a successfully
           forwarded datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 23 }

ipSystemStatsHCOutForwDatagrams OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of datagrams for which this entity was not their
           final IP destination and for which it was successful in
           finding a path to their final destination.  This object
           counts the same packets as ipSystemStatsOutForwDatagrams,
           but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 24 }

ipSystemStatsOutDiscards OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of output IP datagrams for which no problem was
           encountered to prevent their transmission to their
           destination, but were discarded (e.g., for lack of
           buffer space).  Note that this counter would include



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           datagrams counted in ipSystemStatsOutForwDatagrams if any
           such datagrams met this (discretionary) discard criterion.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 25 }

ipSystemStatsOutFragReqds OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP datagrams that would require fragmentation
           in order to be transmitted.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for a successfully
           fragmented datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 26 }

ipSystemStatsOutFragOKs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP datagrams that have been successfully
           fragmented.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for a successfully
           fragmented datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 27 }

ipSystemStatsOutFragFails OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only



Routhier, Ed.               Standards Track                    [Page 35]

RFC 4293                         IP MIB                       April 2006


   STATUS     current
   DESCRIPTION
          "The number of IP datagrams that have been discarded because
           they needed to be fragmented but could not be.  This
           includes IPv4 packets that have the DF bit set and IPv6
           packets that are being forwarded and exceed the outgoing
           link MTU.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for an unsuccessfully
           fragmented datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 28 }

ipSystemStatsOutFragCreates OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of output datagram fragments that have been
           generated as a result of IP fragmentation.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for a successfully
           fragmented datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 29 }

ipSystemStatsOutTransmits OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of IP datagrams that this entity supplied
           to the lower layers for transmission.  This includes
           datagrams generated locally and those forwarded by this
           entity.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other



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RFC 4293                         IP MIB                       April 2006


           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 30 }

ipSystemStatsHCOutTransmits OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of IP datagrams that this entity supplied
           to the lower layers for transmission.  This object counts
           the same datagrams as ipSystemStatsOutTransmits, but allows
           for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 31 }

ipSystemStatsOutOctets OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets in IP datagrams delivered to the
           lower layers for transmission.  Octets from datagrams
           counted in ipSystemStatsOutTransmits MUST be counted here.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 32 }

ipSystemStatsHCOutOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets in IP datagrams delivered to the
           lower layers for transmission.  This objects counts the same
           octets as ipSystemStatsOutOctets, but allows for larger
           values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of



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RFC 4293                         IP MIB                       April 2006


           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 33 }

ipSystemStatsInMcastPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP multicast datagrams received.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 34 }

ipSystemStatsHCInMcastPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP multicast datagrams received.  This object
           counts the same datagrams as ipSystemStatsInMcastPkts but
           allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 35 }

ipSystemStatsInMcastOctets OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets received in IP multicast
           datagrams.  Octets from datagrams counted in
           ipSystemStatsInMcastPkts MUST be counted here.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 36 }

ipSystemStatsHCInMcastOctets OBJECT-TYPE
   SYNTAX     Counter64



Routhier, Ed.               Standards Track                    [Page 38]

RFC 4293                         IP MIB                       April 2006


   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets received in IP multicast
           datagrams.  This object counts the same octets as
           ipSystemStatsInMcastOctets, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 37 }

ipSystemStatsOutMcastPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP multicast datagrams transmitted.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 38 }

ipSystemStatsHCOutMcastPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP multicast datagrams transmitted.  This
           object counts the same datagrams as
           ipSystemStatsOutMcastPkts, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 39 }

ipSystemStatsOutMcastOctets OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets transmitted in IP multicast
           datagrams.  Octets from datagrams counted in



Routhier, Ed.               Standards Track                    [Page 39]

RFC 4293                         IP MIB                       April 2006


           ipSystemStatsOutMcastPkts MUST be counted here.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 40 }

ipSystemStatsHCOutMcastOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets transmitted in IP multicast
           datagrams.  This object counts the same octets as
           ipSystemStatsOutMcastOctets, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 41 }

ipSystemStatsInBcastPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP broadcast datagrams received.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 42 }

ipSystemStatsHCInBcastPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP broadcast datagrams received.  This object
           counts the same datagrams as ipSystemStatsInBcastPkts but
           allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of



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RFC 4293                         IP MIB                       April 2006


           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 43 }

ipSystemStatsOutBcastPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP broadcast datagrams transmitted.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 44 }

ipSystemStatsHCOutBcastPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP broadcast datagrams transmitted.  This
           object counts the same datagrams as
           ipSystemStatsOutBcastPkts, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipSystemStatsDiscontinuityTime."
   ::= { ipSystemStatsEntry 45 }

ipSystemStatsDiscontinuityTime OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The value of sysUpTime on the most recent occasion at which
           any one or more of this entry's counters suffered a
           discontinuity.

           If no such discontinuities have occurred since the last re-
           initialization of the local management subsystem, then this
           object contains a zero value."
   ::= { ipSystemStatsEntry 46 }

ipSystemStatsRefreshRate OBJECT-TYPE
   SYNTAX     Unsigned32
   UNITS      "milli-seconds"



Routhier, Ed.               Standards Track                    [Page 41]

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   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The minimum reasonable polling interval for this entry.
           This object provides an indication of the minimum amount of
           time required to update the counters in this entry."
   ::= { ipSystemStatsEntry 47 }

ipIfStatsTableLastChange OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The value of sysUpTime on the most recent occasion at which
           a row in the ipIfStatsTable was added or deleted.

           If new objects are added to the ipIfStatsTable that require
           the ipIfStatsTableLastChange to be updated when they are
           modified, they must specify that requirement in their
           description clause."
   ::= { ipTrafficStats 2 }

ipIfStatsTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpIfStatsEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table containing per-interface traffic statistics.  This
           table and the ipSystemStatsTable contain similar objects
           whose difference is in their granularity.  Where this table
           contains per-interface statistics, the ipSystemStatsTable
           contains the same statistics, but counted on a system wide
           basis."
   ::= { ipTrafficStats 3 }

ipIfStatsEntry OBJECT-TYPE
   SYNTAX     IpIfStatsEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "An interface statistics entry containing objects for a
           particular interface and version of IP."
   INDEX { ipIfStatsIPVersion, ipIfStatsIfIndex }
   ::= { ipIfStatsTable 1 }

IpIfStatsEntry ::= SEQUENCE {
       ipIfStatsIPVersion           InetVersion,
       ipIfStatsIfIndex             InterfaceIndex,



Routhier, Ed.               Standards Track                    [Page 42]

RFC 4293                         IP MIB                       April 2006


       ipIfStatsInReceives          Counter32,
       ipIfStatsHCInReceives        Counter64,
       ipIfStatsInOctets            Counter32,
       ipIfStatsHCInOctets          Counter64,
       ipIfStatsInHdrErrors         Counter32,
       ipIfStatsInNoRoutes          Counter32,
       ipIfStatsInAddrErrors        Counter32,
       ipIfStatsInUnknownProtos     Counter32,
       ipIfStatsInTruncatedPkts     Counter32,
       ipIfStatsInForwDatagrams     Counter32,
       ipIfStatsHCInForwDatagrams   Counter64,
       ipIfStatsReasmReqds          Counter32,
       ipIfStatsReasmOKs            Counter32,
       ipIfStatsReasmFails          Counter32,
       ipIfStatsInDiscards          Counter32,
       ipIfStatsInDelivers          Counter32,
       ipIfStatsHCInDelivers        Counter64,
       ipIfStatsOutRequests         Counter32,
       ipIfStatsHCOutRequests       Counter64,
       ipIfStatsOutForwDatagrams    Counter32,
       ipIfStatsHCOutForwDatagrams  Counter64,
       ipIfStatsOutDiscards         Counter32,
       ipIfStatsOutFragReqds        Counter32,
       ipIfStatsOutFragOKs          Counter32,
       ipIfStatsOutFragFails        Counter32,
       ipIfStatsOutFragCreates      Counter32,
       ipIfStatsOutTransmits        Counter32,
       ipIfStatsHCOutTransmits      Counter64,
       ipIfStatsOutOctets           Counter32,
       ipIfStatsHCOutOctets         Counter64,
       ipIfStatsInMcastPkts         Counter32,
       ipIfStatsHCInMcastPkts       Counter64,
       ipIfStatsInMcastOctets       Counter32,
       ipIfStatsHCInMcastOctets     Counter64,
       ipIfStatsOutMcastPkts        Counter32,
       ipIfStatsHCOutMcastPkts      Counter64,
       ipIfStatsOutMcastOctets      Counter32,
       ipIfStatsHCOutMcastOctets    Counter64,
       ipIfStatsInBcastPkts         Counter32,
       ipIfStatsHCInBcastPkts       Counter64,
       ipIfStatsOutBcastPkts        Counter32,
       ipIfStatsHCOutBcastPkts      Counter64,
       ipIfStatsDiscontinuityTime   TimeStamp,
       ipIfStatsRefreshRate         Unsigned32
   }

ipIfStatsIPVersion OBJECT-TYPE
   SYNTAX     InetVersion



Routhier, Ed.               Standards Track                    [Page 43]

RFC 4293                         IP MIB                       April 2006


   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The IP version of this row."
   ::= { ipIfStatsEntry 1 }

ipIfStatsIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface to
           which this entry is applicable.  The interface identified by
           a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipIfStatsEntry 2 }

ipIfStatsInReceives OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of input IP datagrams received, including
           those received in error.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 3 }

ipIfStatsHCInReceives OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of input IP datagrams received, including
           those received in error.  This object counts the same
           datagrams as ipIfStatsInReceives, but allows for larger
           values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 4 }

ipIfStatsInOctets OBJECT-TYPE



Routhier, Ed.               Standards Track                    [Page 44]

RFC 4293                         IP MIB                       April 2006


   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets received in input IP datagrams,
           including those received in error.  Octets from datagrams
           counted in ipIfStatsInReceives MUST be counted here.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 5 }

ipIfStatsHCInOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets received in input IP datagrams,
           including those received in error.  This object counts the
           same octets as ipIfStatsInOctets, but allows for larger
           values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 6 }

ipIfStatsInHdrErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams discarded due to errors in
           their IP headers, including version number mismatch, other
           format errors, hop count exceeded, errors discovered in
           processing their IP options, etc.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 7 }

ipIfStatsInNoRoutes OBJECT-TYPE
   SYNTAX     Counter32



Routhier, Ed.               Standards Track                    [Page 45]

RFC 4293                         IP MIB                       April 2006


   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams discarded because no route
           could be found to transmit them to their destination.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 8 }

ipIfStatsInAddrErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams discarded because the IP
           address in their IP header's destination field was not a
           valid address to be received at this entity.  This count
           includes invalid addresses (e.g., ::0).  For entities that
           are not IP routers and therefore do not forward datagrams,
           this counter includes datagrams discarded because the
           destination address was not a local address.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 9 }

ipIfStatsInUnknownProtos OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of locally-addressed IP datagrams received
           successfully but discarded because of an unknown or
           unsupported protocol.

           When tracking interface statistics, the counter of the
           interface to which these datagrams were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the datagrams.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of



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           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 10 }

ipIfStatsInTruncatedPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams discarded because the
           datagram frame didn't carry enough data.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 11 }

ipIfStatsInForwDatagrams OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input datagrams for which this entity was not
           their final IP destination and for which this entity
           attempted to find a route to forward them to that final
           destination.  In entities that do not act as IP routers,
           this counter will include only those datagrams that were
           Source-Routed via this entity, and the Source-Route
           processing was successful.

           When tracking interface statistics, the counter of the
           incoming interface is incremented for each datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 12 }

ipIfStatsHCInForwDatagrams OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input datagrams for which this entity was not
           their final IP destination and for which this entity
           attempted to find a route to forward them to that final
           destination.  This object counts the same packets as



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           ipIfStatsInForwDatagrams, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 13 }

ipIfStatsReasmReqds OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP fragments received that needed to be
           reassembled at this interface.

           When tracking interface statistics, the counter of the
           interface to which these fragments were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the fragments.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 14 }

ipIfStatsReasmOKs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP datagrams successfully reassembled.

           When tracking interface statistics, the counter of the
           interface to which these datagrams were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the datagrams.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 15 }

ipIfStatsReasmFails OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only



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   STATUS     current
   DESCRIPTION
          "The number of failures detected by the IP re-assembly
           algorithm (for whatever reason: timed out, errors, etc.).
           Note that this is not necessarily a count of discarded IP
           fragments since some algorithms (notably the algorithm in
           RFC 815) can lose track of the number of fragments by
           combining them as they are received.

           When tracking interface statistics, the counter of the
           interface to which these fragments were addressed is
           incremented.  This interface might not be the same as the
           input interface for some of the fragments.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 16 }

ipIfStatsInDiscards OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input IP datagrams for which no problems were
           encountered to prevent their continued processing, but
           were discarded (e.g., for lack of buffer space).  Note that
           this counter does not include any datagrams discarded while
           awaiting re-assembly.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 17 }

ipIfStatsInDelivers OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of datagrams successfully delivered to IP
           user-protocols (including ICMP).

           When tracking interface statistics, the counter of the
           interface to which these datagrams were addressed is
           incremented.  This interface might not be the same as the



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RFC 4293                         IP MIB                       April 2006


           input interface for some of the datagrams.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 18 }

ipIfStatsHCInDelivers OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of datagrams successfully delivered to IP
           user-protocols (including ICMP).  This object counts the
           same packets as ipIfStatsInDelivers, but allows for larger
           values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 19 }

ipIfStatsOutRequests OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of IP datagrams that local IP user-
           protocols (including ICMP) supplied to IP in requests for
           transmission.  Note that this counter does not include any
           datagrams counted in ipIfStatsOutForwDatagrams.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 20 }

ipIfStatsHCOutRequests OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of IP datagrams that local IP user-
           protocols (including ICMP) supplied to IP in requests for
           transmission.  This object counts the same packets as



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           ipIfStatsOutRequests, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 21 }

-- This object ID is reserved to allow the IDs for this table's objects
-- to align with the objects in the ipSystemStatsTable.
-- ::= {ipIfStatsEntry 22}

ipIfStatsOutForwDatagrams OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of datagrams for which this entity was not their
           final IP destination and for which it was successful in
           finding a path to their final destination.  In entities
           that do not act as IP routers, this counter will include
           only those datagrams that were Source-Routed via this
           entity, and the Source-Route processing was successful.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for a successfully
           forwarded datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 23 }

ipIfStatsHCOutForwDatagrams OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of datagrams for which this entity was not their
           final IP destination and for which it was successful in
           finding a path to their final destination.  This object
           counts the same packets as ipIfStatsOutForwDatagrams, but
           allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of



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           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 24 }

ipIfStatsOutDiscards OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of output IP datagrams for which no problem was
           encountered to prevent their transmission to their
           destination, but were discarded (e.g., for lack of
           buffer space).  Note that this counter would include
           datagrams counted in ipIfStatsOutForwDatagrams if any such
           datagrams met this (discretionary) discard criterion.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 25 }

ipIfStatsOutFragReqds OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP datagrams that would require fragmentation
           in order to be transmitted.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for a successfully
           fragmented datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 26 }

ipIfStatsOutFragOKs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP datagrams that have been successfully
           fragmented.

           When tracking interface statistics, the counter of the



Routhier, Ed.               Standards Track                    [Page 52]

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           outgoing interface is incremented for a successfully
           fragmented datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 27 }

ipIfStatsOutFragFails OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP datagrams that have been discarded because
           they needed to be fragmented but could not be.  This
           includes IPv4 packets that have the DF bit set and IPv6
           packets that are being forwarded and exceed the outgoing
           link MTU.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for an unsuccessfully
           fragmented datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 28 }

ipIfStatsOutFragCreates OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of output datagram fragments that have been
           generated as a result of IP fragmentation.

           When tracking interface statistics, the counter of the
           outgoing interface is incremented for a successfully
           fragmented datagram.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 29 }




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RFC 4293                         IP MIB                       April 2006


ipIfStatsOutTransmits OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of IP datagrams that this entity supplied
           to the lower layers for transmission.  This includes
           datagrams generated locally and those forwarded by this
           entity.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 30 }

ipIfStatsHCOutTransmits OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of IP datagrams that this entity supplied
           to the lower layers for transmission.  This object counts
           the same datagrams as ipIfStatsOutTransmits, but allows for
           larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 31 }

ipIfStatsOutOctets OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets in IP datagrams delivered to the
           lower layers for transmission.  Octets from datagrams
           counted in ipIfStatsOutTransmits MUST be counted here.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 32 }

ipIfStatsHCOutOctets OBJECT-TYPE



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   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets in IP datagrams delivered to the
           lower layers for transmission.  This objects counts the same
           octets as ipIfStatsOutOctets, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 33 }

ipIfStatsInMcastPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP multicast datagrams received.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 34 }

ipIfStatsHCInMcastPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP multicast datagrams received.  This object
           counts the same datagrams as ipIfStatsInMcastPkts, but
           allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 35 }

ipIfStatsInMcastOctets OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets received in IP multicast



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RFC 4293                         IP MIB                       April 2006


           datagrams.  Octets from datagrams counted in
           ipIfStatsInMcastPkts MUST be counted here.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 36 }

ipIfStatsHCInMcastOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets received in IP multicast
           datagrams.  This object counts the same octets as
           ipIfStatsInMcastOctets, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 37 }

ipIfStatsOutMcastPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP multicast datagrams transmitted.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 38 }

ipIfStatsHCOutMcastPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP multicast datagrams transmitted.  This
           object counts the same datagrams as ipIfStatsOutMcastPkts,
           but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other



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           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 39 }

ipIfStatsOutMcastOctets OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets transmitted in IP multicast
           datagrams.  Octets from datagrams counted in
           ipIfStatsOutMcastPkts MUST be counted here.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 40 }

ipIfStatsHCOutMcastOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of octets transmitted in IP multicast
           datagrams.  This object counts the same octets as
           ipIfStatsOutMcastOctets, but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 41 }

ipIfStatsInBcastPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP broadcast datagrams received.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 42 }

ipIfStatsHCInBcastPkts OBJECT-TYPE



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   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP broadcast datagrams received.  This object
           counts the same datagrams as ipIfStatsInBcastPkts, but
           allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 43 }

ipIfStatsOutBcastPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP broadcast datagrams transmitted.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 44 }

ipIfStatsHCOutBcastPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of IP broadcast datagrams transmitted.  This
           object counts the same datagrams as ipIfStatsOutBcastPkts,
           but allows for larger values.

           Discontinuities in the value of this counter can occur at
           re-initialization of the management system, and at other
           times as indicated by the value of
           ipIfStatsDiscontinuityTime."
   ::= { ipIfStatsEntry 45 }

ipIfStatsDiscontinuityTime OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The value of sysUpTime on the most recent occasion at which



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           any one or more of this entry's counters suffered a
           discontinuity.

           If no such discontinuities have occurred since the last re-
           initialization of the local management subsystem, then this
           object contains a zero value."
   ::= { ipIfStatsEntry 46 }

ipIfStatsRefreshRate OBJECT-TYPE
   SYNTAX     Unsigned32
   UNITS "milli-seconds"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The minimum reasonable polling interval for this entry.
           This object provides an indication of the minimum amount of
           time required to update the counters in this entry."
   ::= { ipIfStatsEntry 47 }

--
-- Internet Address Prefix table
--

ipAddressPrefixTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpAddressPrefixEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "This table allows the user to determine the source of an IP
           address or set of IP addresses, and allows other tables to
           share the information via pointer rather than by copying.

           For example, when the node configures both a unicast and
           anycast address for a prefix, the ipAddressPrefix objects
           for those addresses will point to a single row in this
           table.

           This table primarily provides support for IPv6 prefixes, and
           several of the objects are less meaningful for IPv4.  The
           table continues to allow IPv4 addresses to allow future
           flexibility.  In order to promote a common configuration,
           this document includes suggestions for default values for
           IPv4 prefixes.  Each of these values may be overridden if an
           object is meaningful to the node.

           All prefixes used by this entity should be included in this
           table independent of how the entity learned the prefix.
           (This table isn't limited to prefixes learned from router



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           advertisements.)"
   ::= { ip 32 }

ipAddressPrefixEntry OBJECT-TYPE
   SYNTAX     IpAddressPrefixEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "An entry in the ipAddressPrefixTable."
   INDEX    { ipAddressPrefixIfIndex, ipAddressPrefixType,
              ipAddressPrefixPrefix, ipAddressPrefixLength }
   ::= { ipAddressPrefixTable 1 }

IpAddressPrefixEntry ::= SEQUENCE {
       ipAddressPrefixIfIndex               InterfaceIndex,
       ipAddressPrefixType                  InetAddressType,
       ipAddressPrefixPrefix                InetAddress,
       ipAddressPrefixLength                InetAddressPrefixLength,
       ipAddressPrefixOrigin                IpAddressPrefixOriginTC,
       ipAddressPrefixOnLinkFlag            TruthValue,
       ipAddressPrefixAutonomousFlag        TruthValue,
       ipAddressPrefixAdvPreferredLifetime  Unsigned32,
       ipAddressPrefixAdvValidLifetime      Unsigned32
   }

ipAddressPrefixIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface on
           which this prefix is configured.  The interface identified
           by a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipAddressPrefixEntry 1 }

ipAddressPrefixType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The address type of ipAddressPrefix."
   ::= { ipAddressPrefixEntry 2 }

ipAddressPrefixPrefix OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current



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   DESCRIPTION
          "The address prefix.  The address type of this object is
           specified in ipAddressPrefixType.  The length of this object
           is the standard length for objects of that type (4 or 16
           bytes).  Any bits after ipAddressPrefixLength must be zero.

           Implementors need to be aware that, if the size of
           ipAddressPrefixPrefix exceeds 114 octets, then OIDS of
           instances of columns in this row will have more than 128
           sub-identifiers and cannot be accessed using SNMPv1,
           SNMPv2c, or SNMPv3."
   ::= { ipAddressPrefixEntry 3 }

ipAddressPrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The prefix length associated with this prefix.

           The value 0 has no special meaning for this object.  It
           simply refers to address '::/0'."
   ::= { ipAddressPrefixEntry 4 }

ipAddressPrefixOrigin OBJECT-TYPE
   SYNTAX     IpAddressPrefixOriginTC
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The origin of this prefix."
   ::= { ipAddressPrefixEntry 5 }

ipAddressPrefixOnLinkFlag OBJECT-TYPE
   SYNTAX     TruthValue
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "This object has the value 'true(1)', if this prefix can be
           used for on-link determination; otherwise, the value is
           'false(2)'.

           The default for IPv4 prefixes is 'true(1)'."
   REFERENCE "For IPv6 RFC 2461, especially sections 2 and 4.6.2 and
              RFC 2462"
   ::= { ipAddressPrefixEntry 6 }

ipAddressPrefixAutonomousFlag OBJECT-TYPE
   SYNTAX     TruthValue



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   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "Autonomous address configuration flag.  When true(1),
           indicates that this prefix can be used for autonomous
           address configuration (i.e., can be used to form a local
           interface address).  If false(2), it is not used to auto-
           configure a local interface address.

           The default for IPv4 prefixes is 'false(2)'."
   REFERENCE "For IPv6 RFC 2461, especially sections 2 and 4.6.2 and
              RFC 2462"
   ::= { ipAddressPrefixEntry 7 }

ipAddressPrefixAdvPreferredLifetime OBJECT-TYPE
   SYNTAX     Unsigned32
   UNITS      "seconds"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The remaining length of time, in seconds, that this prefix
           will continue to be preferred, i.e., time until deprecation.

           A value of 4,294,967,295 represents infinity.

           The address generated from a deprecated prefix should no
           longer be used as a source address in new communications,
           but packets received on such an interface are processed as
           expected.

           The default for IPv4 prefixes is 4,294,967,295 (infinity)."
   REFERENCE "For IPv6 RFC 2461, especially sections 2 and 4.6.2 and
              RFC 2462"
   ::= { ipAddressPrefixEntry 8 }

ipAddressPrefixAdvValidLifetime OBJECT-TYPE
   SYNTAX     Unsigned32
   UNITS       "seconds"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The remaining length of time, in seconds, that this prefix
           will continue to be valid, i.e., time until invalidation.  A
           value of 4,294,967,295 represents infinity.

           The address generated from an invalidated prefix should not
           appear as the destination or source address of a packet.




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           The default for IPv4 prefixes is 4,294,967,295 (infinity)."
   REFERENCE "For IPv6 RFC 2461, especially sections 2 and 4.6.2 and
              RFC 2462"
   ::= { ipAddressPrefixEntry 9 }

--
-- Internet Address Table
--

ipAddressSpinLock OBJECT-TYPE
   SYNTAX     TestAndIncr
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
          "An advisory lock used to allow cooperating SNMP managers to
           coordinate their use of the set operation in creating or
           modifying rows within this table.

           In order to use this lock to coordinate the use of set
           operations, managers should first retrieve
           ipAddressTableSpinLock.  They should then determine the
           appropriate row to create or modify.  Finally, they should
           issue the appropriate set command, including the retrieved
           value of ipAddressSpinLock.  If another manager has altered
           the table in the meantime, then the value of
           ipAddressSpinLock will have changed, and the creation will
           fail as it will be specifying an incorrect value for
           ipAddressSpinLock.  It is suggested, but not required, that
           the ipAddressSpinLock be the first var bind for each set of
           objects representing a 'row' in a PDU."
   ::= { ip 33 }

ipAddressTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpAddressEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "This table contains addressing information relevant to the
           entity's interfaces.

           This table does not contain multicast address information.
           Tables for such information should be contained in multicast
           specific MIBs, such as RFC 3019.

           While this table is writable, the user will note that
           several objects, such as ipAddressOrigin, are not.  The
           intention in allowing a user to write to this table is to
           allow them to add or remove any entry that isn't



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           permanent.  The user should be allowed to modify objects
           and entries when that would not cause inconsistencies
           within the table.  Allowing write access to objects, such
           as ipAddressOrigin, could allow a user to insert an entry
           and then label it incorrectly.

           Note well: When including IPv6 link-local addresses in this
           table, the entry must use an InetAddressType of 'ipv6z' in
           order to differentiate between the possible interfaces."
   ::= { ip 34 }

ipAddressEntry OBJECT-TYPE
   SYNTAX     IpAddressEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "An address mapping for a particular interface."
   INDEX { ipAddressAddrType, ipAddressAddr }
   ::= { ipAddressTable 1 }

IpAddressEntry ::= SEQUENCE {
       ipAddressAddrType     InetAddressType,
       ipAddressAddr         InetAddress,
       ipAddressIfIndex      InterfaceIndex,
       ipAddressType         INTEGER,
       ipAddressPrefix       RowPointer,
       ipAddressOrigin       IpAddressOriginTC,
       ipAddressStatus       IpAddressStatusTC,
       ipAddressCreated      TimeStamp,
       ipAddressLastChanged  TimeStamp,
       ipAddressRowStatus    RowStatus,
       ipAddressStorageType  StorageType
   }

ipAddressAddrType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The address type of ipAddressAddr."
   ::= { ipAddressEntry 1 }

ipAddressAddr OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The IP address to which this entry's addressing information



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           pertains.  The address type of this object is specified in
           ipAddressAddrType.

           Implementors need to be aware that if the size of
           ipAddressAddr exceeds 116 octets, then OIDS of instances of
           columns in this row will have more than 128 sub-identifiers
           and cannot be accessed using SNMPv1, SNMPv2c, or SNMPv3."
   ::= { ipAddressEntry 2 }

ipAddressIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface to
           which this entry is applicable.  The interface identified by
           a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipAddressEntry 3 }

ipAddressType OBJECT-TYPE
   SYNTAX     INTEGER {
                unicast(1),
                anycast(2),
                broadcast(3)
   }
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The type of address.  broadcast(3) is not a valid value for
           IPv6 addresses (RFC 3513)."
   DEFVAL { unicast }
   ::= { ipAddressEntry 4 }

ipAddressPrefix OBJECT-TYPE
   SYNTAX     RowPointer
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "A pointer to the row in the prefix table to which this
           address belongs.  May be { 0 0 } if there is no such row."
   DEFVAL { zeroDotZero }
   ::= { ipAddressEntry 5 }

ipAddressOrigin OBJECT-TYPE
   SYNTAX     IpAddressOriginTC
   MAX-ACCESS read-only
   STATUS     current



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   DESCRIPTION
          "The origin of the address."
   ::= { ipAddressEntry 6 }

ipAddressStatus OBJECT-TYPE
   SYNTAX     IpAddressStatusTC
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The status of the address, describing if the address can be
           used for communication.

           In the absence of other information, an IPv4 address is
           always preferred(1)."
   DEFVAL { preferred }
   ::= { ipAddressEntry 7 }

ipAddressCreated OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The value of sysUpTime at the time this entry was created.
           If this entry was created prior to the last re-
           initialization of the local network management subsystem,
           then this object contains a zero value."
   ::= { ipAddressEntry 8 }

ipAddressLastChanged OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The value of sysUpTime at the time this entry was last
           updated.  If this entry was updated prior to the last re-
           initialization of the local network management subsystem,
           then this object contains a zero value."
   ::= { ipAddressEntry 9 }

ipAddressRowStatus OBJECT-TYPE
   SYNTAX     RowStatus
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The status of this conceptual row.

           The RowStatus TC requires that this DESCRIPTION clause
           states under which circumstances other objects in this row



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           can be modified.  The value of this object has no effect on
           whether other objects in this conceptual row can be
           modified.

           A conceptual row can not be made active until the
           ipAddressIfIndex has been set to a valid index."
   ::= { ipAddressEntry 10 }

ipAddressStorageType OBJECT-TYPE
   SYNTAX     StorageType
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The storage type for this conceptual row.  If this object
           has a value of 'permanent', then no other objects are
           required to be able to be modified."
   DEFVAL { volatile }
   ::= { ipAddressEntry 11 }

--
-- the Internet Address Translation table
--

ipNetToPhysicalTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpNetToPhysicalEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The IP Address Translation table used for mapping from IP
           addresses to physical addresses.

           The Address Translation tables contain the IP address to
           'physical' address equivalences.  Some interfaces do not use
           translation tables for determining address equivalences
           (e.g., DDN-X.25 has an algorithmic method); if all
           interfaces are of this type, then the Address Translation
           table is empty, i.e., has zero entries.

           While many protocols may be used to populate this table, ARP
           and Neighbor Discovery are the most likely
           options."
   REFERENCE "RFC 826 and RFC 2461"
   ::= { ip 35 }

ipNetToPhysicalEntry OBJECT-TYPE
   SYNTAX     IpNetToPhysicalEntry
   MAX-ACCESS not-accessible
   STATUS     current



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   DESCRIPTION
          "Each entry contains one IP address to `physical' address
           equivalence."
   INDEX       { ipNetToPhysicalIfIndex,
                 ipNetToPhysicalNetAddressType,
                 ipNetToPhysicalNetAddress }
   ::= { ipNetToPhysicalTable 1 }

IpNetToPhysicalEntry ::= SEQUENCE {
       ipNetToPhysicalIfIndex         InterfaceIndex,
       ipNetToPhysicalNetAddressType  InetAddressType,
       ipNetToPhysicalNetAddress      InetAddress,
       ipNetToPhysicalPhysAddress     PhysAddress,
       ipNetToPhysicalLastUpdated     TimeStamp,
       ipNetToPhysicalType            INTEGER,
       ipNetToPhysicalState           INTEGER,
       ipNetToPhysicalRowStatus       RowStatus
   }

ipNetToPhysicalIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface to
           which this entry is applicable.  The interface identified by
           a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipNetToPhysicalEntry 1 }

ipNetToPhysicalNetAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The type of ipNetToPhysicalNetAddress."
   ::= { ipNetToPhysicalEntry 2 }

ipNetToPhysicalNetAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The IP Address corresponding to the media-dependent
           `physical' address.  The address type of this object is
           specified in ipNetToPhysicalAddressType.

           Implementors need to be aware that if the size of



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           ipNetToPhysicalNetAddress exceeds 115 octets, then OIDS of
           instances of columns in this row will have more than 128
           sub-identifiers and cannot be accessed using SNMPv1,
           SNMPv2c, or SNMPv3."
   ::= { ipNetToPhysicalEntry 3 }

ipNetToPhysicalPhysAddress OBJECT-TYPE
   SYNTAX     PhysAddress (SIZE(0..65535))
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The media-dependent `physical' address.

           As the entries in this table are typically not persistent
           when this object is written the entity SHOULD NOT save the
           change to non-volatile storage."
   ::= { ipNetToPhysicalEntry 4 }

ipNetToPhysicalLastUpdated OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The value of sysUpTime at the time this entry was last
           updated.  If this entry was updated prior to the last re-
           initialization of the local network management subsystem,
           then this object contains a zero value."
   ::= { ipNetToPhysicalEntry 5 }

ipNetToPhysicalType OBJECT-TYPE
   SYNTAX     INTEGER {
               other(1),        -- none of the following
               invalid(2),      -- an invalidated mapping
               dynamic(3),
               static(4),
               local(5)         -- local interface
           }
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The type of mapping.

           Setting this object to the value invalid(2) has the effect
           of invalidating the corresponding entry in the
           ipNetToPhysicalTable.  That is, it effectively dis-
           associates the interface identified with said entry from the
           mapping identified with said entry.  It is an
           implementation-specific matter as to whether the agent



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           removes an invalidated entry from the table.  Accordingly,
           management stations must be prepared to receive tabular
           information from agents that corresponds to entries not
           currently in use.  Proper interpretation of such entries
           requires examination of the relevant ipNetToPhysicalType
           object.

           The 'dynamic(3)' type indicates that the IP address to
           physical addresses mapping has been dynamically resolved
           using e.g., IPv4 ARP or the IPv6 Neighbor Discovery
           protocol.

           The 'static(4)' type indicates that the mapping has been
           statically configured.  Both of these refer to entries that
           provide mappings for other entities addresses.

           The 'local(5)' type indicates that the mapping is provided
           for an entity's own interface address.

           As the entries in this table are typically not persistent
           when this object is written the entity SHOULD NOT save the
           change to non-volatile storage."
   DEFVAL { static }
   ::= { ipNetToPhysicalEntry 6 }

ipNetToPhysicalState OBJECT-TYPE
   SYNTAX     INTEGER {
                    reachable(1), -- confirmed reachability

                    stale(2),     -- unconfirmed reachability

                    delay(3),     -- waiting for reachability
                                  -- confirmation before entering
                                  -- the probe state

                    probe(4),     -- actively probing

                    invalid(5),   -- an invalidated mapping

                    unknown(6),   -- state can not be determined
                                  -- for some reason.

                    incomplete(7) -- address resolution is being
                                  -- performed.
                   }
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION



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          "The Neighbor Unreachability Detection state for the
           interface when the address mapping in this entry is used.
           If Neighbor Unreachability Detection is not in use (e.g. for
           IPv4), this object is always unknown(6)."
   REFERENCE "RFC 2461"
   ::= { ipNetToPhysicalEntry 7 }

ipNetToPhysicalRowStatus OBJECT-TYPE
   SYNTAX     RowStatus
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The status of this conceptual row.

           The RowStatus TC requires that this DESCRIPTION clause
           states under which circumstances other objects in this row
           can be modified.  The value of this object has no effect on
           whether other objects in this conceptual row can be
           modified.

           A conceptual row can not be made active until the
           ipNetToPhysicalPhysAddress object has been set.

           Note that if the ipNetToPhysicalType is set to 'invalid',
           the managed node may delete the entry independent of the
           state of this object."
   ::= { ipNetToPhysicalEntry 8 }

--
-- The IPv6 Scope Zone Index Table.
--

ipv6ScopeZoneIndexTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF Ipv6ScopeZoneIndexEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table used to describe IPv6 unicast and multicast scope
           zones.

           For those objects that have names rather than numbers, the
           names were chosen to coincide with the names used in the
           IPv6 address architecture document. "
   REFERENCE "Section 2.7 of RFC 4291"
   ::= { ip 36 }

ipv6ScopeZoneIndexEntry OBJECT-TYPE
   SYNTAX     Ipv6ScopeZoneIndexEntry



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   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "Each entry contains the list of scope identifiers on a given
           interface."
   INDEX { ipv6ScopeZoneIndexIfIndex }
   ::= { ipv6ScopeZoneIndexTable 1 }

Ipv6ScopeZoneIndexEntry ::= SEQUENCE {
       ipv6ScopeZoneIndexIfIndex            InterfaceIndex,
       ipv6ScopeZoneIndexLinkLocal          InetZoneIndex,
       ipv6ScopeZoneIndex3                  InetZoneIndex,
       ipv6ScopeZoneIndexAdminLocal         InetZoneIndex,
       ipv6ScopeZoneIndexSiteLocal          InetZoneIndex,
       ipv6ScopeZoneIndex6                  InetZoneIndex,
       ipv6ScopeZoneIndex7                  InetZoneIndex,
       ipv6ScopeZoneIndexOrganizationLocal  InetZoneIndex,
       ipv6ScopeZoneIndex9                  InetZoneIndex,
       ipv6ScopeZoneIndexA                  InetZoneIndex,
       ipv6ScopeZoneIndexB                  InetZoneIndex,
       ipv6ScopeZoneIndexC                  InetZoneIndex,
       ipv6ScopeZoneIndexD                  InetZoneIndex
   }

ipv6ScopeZoneIndexIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface to
           which these scopes belong.  The interface identified by a
           particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipv6ScopeZoneIndexEntry 1 }

ipv6ScopeZoneIndexLinkLocal OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for the link-local scope on this interface."
   ::= { ipv6ScopeZoneIndexEntry 2 }

ipv6ScopeZoneIndex3 OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION



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          "The zone index for scope 3 on this interface."
   ::= { ipv6ScopeZoneIndexEntry 3 }

ipv6ScopeZoneIndexAdminLocal OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for the admin-local scope on this interface."
   ::= { ipv6ScopeZoneIndexEntry 4 }

ipv6ScopeZoneIndexSiteLocal OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for the site-local scope on this interface."
   ::= { ipv6ScopeZoneIndexEntry 5 }

ipv6ScopeZoneIndex6 OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for scope 6 on this interface."
   ::= { ipv6ScopeZoneIndexEntry 6 }

ipv6ScopeZoneIndex7 OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for scope 7 on this interface."
   ::= { ipv6ScopeZoneIndexEntry 7 }

ipv6ScopeZoneIndexOrganizationLocal OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for the organization-local scope on this
           interface."
   ::= { ipv6ScopeZoneIndexEntry 8 }

ipv6ScopeZoneIndex9 OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current



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   DESCRIPTION
          "The zone index for scope 9 on this interface."
   ::= { ipv6ScopeZoneIndexEntry 9 }

ipv6ScopeZoneIndexA OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for scope A on this interface."
   ::= { ipv6ScopeZoneIndexEntry 10 }

ipv6ScopeZoneIndexB OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for scope B on this interface."
   ::= { ipv6ScopeZoneIndexEntry 11 }

ipv6ScopeZoneIndexC OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for scope C on this interface."
   ::= { ipv6ScopeZoneIndexEntry 12 }

ipv6ScopeZoneIndexD OBJECT-TYPE
   SYNTAX     InetZoneIndex
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The zone index for scope D on this interface."
   ::= { ipv6ScopeZoneIndexEntry 13 }

--
-- The Default Router Table
-- This table simply lists the default routers; for more information
-- about routing tables, see the routing MIBs
--

ipDefaultRouterTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpDefaultRouterEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table used to describe the default routers known to this



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           entity."
   ::= { ip 37 }

ipDefaultRouterEntry OBJECT-TYPE
   SYNTAX     IpDefaultRouterEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "Each entry contains information about a default router known
           to this entity."
   INDEX {ipDefaultRouterAddressType, ipDefaultRouterAddress,
          ipDefaultRouterIfIndex}
   ::= { ipDefaultRouterTable 1 }

IpDefaultRouterEntry ::= SEQUENCE {
       ipDefaultRouterAddressType  InetAddressType,
       ipDefaultRouterAddress      InetAddress,
       ipDefaultRouterIfIndex      InterfaceIndex,
       ipDefaultRouterLifetime     Unsigned32,
       ipDefaultRouterPreference   INTEGER
   }

ipDefaultRouterAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The address type for this row."
   ::= { ipDefaultRouterEntry 1 }

ipDefaultRouterAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The IP address of the default router represented by this
           row.  The address type of this object is specified in
           ipDefaultRouterAddressType.

           Implementers need to be aware that if the size of
           ipDefaultRouterAddress exceeds 115 octets, then OIDS of
           instances of columns in this row will have more than 128
           sub-identifiers and cannot be accessed using SNMPv1,
           SNMPv2c, or SNMPv3."
   ::= { ipDefaultRouterEntry 2 }

ipDefaultRouterIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex



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   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface by
           which the router can be reached.  The interface identified
           by a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipDefaultRouterEntry 3 }

ipDefaultRouterLifetime OBJECT-TYPE
   SYNTAX     Unsigned32 (0..65535)
   UNITS      "seconds"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The remaining length of time, in seconds, that this router
           will continue to be useful as a default router.  A value of
           zero indicates that it is no longer useful as a default
           router.  It is left to the implementer of the MIB as to
           whether a router with a lifetime of zero is removed from the
           list.

           For IPv6, this value should be extracted from the router
           advertisement messages."
   REFERENCE "For IPv6 RFC 2462 sections 4.2 and 6.3.4"
   ::= { ipDefaultRouterEntry 4 }

ipDefaultRouterPreference OBJECT-TYPE
   SYNTAX     INTEGER {
                    reserved (-2),
                    low (-1),
                    medium (0),
                    high (1)
                   }
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "An indication of preference given to this router as a
           default router as described in he Default Router
           Preferences document.  Treating the value as a
           2 bit signed integer allows for simple arithmetic
           comparisons.

           For IPv4 routers or IPv6 routers that are not using the
           updated router advertisement format, this object is set to
           medium (0)."
   REFERENCE "RFC 4291, section 2.1"
   ::= { ipDefaultRouterEntry 5 }



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--
-- Configuration information for constructing router advertisements
--

ipv6RouterAdvertSpinLock OBJECT-TYPE
   SYNTAX     TestAndIncr
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
          "An advisory lock used to allow cooperating SNMP managers to
           coordinate their use of the set operation in creating or
           modifying rows within this table.

           In order to use this lock to coordinate the use of set
           operations, managers should first retrieve
           ipv6RouterAdvertSpinLock.  They should then determine the
           appropriate row to create or modify.  Finally, they should
           issue the appropriate set command including the retrieved
           value of ipv6RouterAdvertSpinLock.  If another manager has
           altered the table in the meantime, then the value of
           ipv6RouterAdvertSpinLock will have changed and the creation
           will fail as it will be specifying an incorrect value for
           ipv6RouterAdvertSpinLock.  It is suggested, but not
           required, that the ipv6RouterAdvertSpinLock be the first var
           bind for each set of objects representing a 'row' in a PDU."
   ::= { ip 38 }

ipv6RouterAdvertTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF Ipv6RouterAdvertEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table containing information used to construct router
           advertisements."
   ::= { ip 39 }

ipv6RouterAdvertEntry OBJECT-TYPE
   SYNTAX     Ipv6RouterAdvertEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "An entry containing information used to construct router
           advertisements.

           Information in this table is persistent, and when this
           object is written, the entity SHOULD save the change to
           non-volatile storage."
   INDEX { ipv6RouterAdvertIfIndex }



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   ::= { ipv6RouterAdvertTable 1 }

Ipv6RouterAdvertEntry ::= SEQUENCE {
       ipv6RouterAdvertIfIndex          InterfaceIndex,
       ipv6RouterAdvertSendAdverts      TruthValue,
       ipv6RouterAdvertMaxInterval      Unsigned32,
       ipv6RouterAdvertMinInterval      Unsigned32,
       ipv6RouterAdvertManagedFlag      TruthValue,
       ipv6RouterAdvertOtherConfigFlag  TruthValue,
       ipv6RouterAdvertLinkMTU          Unsigned32,
       ipv6RouterAdvertReachableTime    Unsigned32,
       ipv6RouterAdvertRetransmitTime   Unsigned32,
       ipv6RouterAdvertCurHopLimit      Unsigned32,
       ipv6RouterAdvertDefaultLifetime  Unsigned32,
       ipv6RouterAdvertRowStatus        RowStatus
   }

ipv6RouterAdvertIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The index value that uniquely identifies the interface on
           which router advertisements constructed with this
           information will be transmitted.  The interface identified
           by a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipv6RouterAdvertEntry 1 }

ipv6RouterAdvertSendAdverts OBJECT-TYPE
   SYNTAX     TruthValue
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "A flag indicating whether the router sends periodic
           router advertisements and responds to router solicitations
           on this interface."
   REFERENCE "RFC 2461 Section 6.2.1"
   DEFVAL { false }
   ::= { ipv6RouterAdvertEntry 2 }

ipv6RouterAdvertMaxInterval OBJECT-TYPE
   SYNTAX     Unsigned32 (4..1800)
   UNITS      "seconds"
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The maximum time allowed between sending unsolicited router



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           advertisements from this interface."
   REFERENCE "RFC 2461 Section 6.2.1"
   DEFVAL { 600 }
   ::= { ipv6RouterAdvertEntry 3 }

ipv6RouterAdvertMinInterval OBJECT-TYPE
   SYNTAX     Unsigned32 (3..1350)
   UNITS      "seconds"
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The minimum time allowed between sending unsolicited router
           advertisements from this interface.

           The default is 0.33 * ipv6RouterAdvertMaxInterval, however,
           in the case of a low value for ipv6RouterAdvertMaxInterval,
           the minimum value for this object is restricted to 3."
   REFERENCE "RFC 2461 Section 6.2.1"
   ::= { ipv6RouterAdvertEntry 4 }

ipv6RouterAdvertManagedFlag OBJECT-TYPE
   SYNTAX     TruthValue
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The true/false value to be placed into the 'managed address
           configuration' flag field in router advertisements sent from
           this interface."
   REFERENCE "RFC 2461 Section 6.2.1"
   DEFVAL { false }
   ::= { ipv6RouterAdvertEntry 5 }

ipv6RouterAdvertOtherConfigFlag OBJECT-TYPE
   SYNTAX     TruthValue
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The true/false value to be placed into the 'other stateful
           configuration' flag field in router advertisements sent from
           this interface."
   REFERENCE "RFC 2461 Section 6.2.1"
   DEFVAL { false }
   ::= { ipv6RouterAdvertEntry 6 }

ipv6RouterAdvertLinkMTU OBJECT-TYPE
   SYNTAX     Unsigned32
   MAX-ACCESS read-create
   STATUS     current



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   DESCRIPTION
          "The value to be placed in MTU options sent by the router on
           this interface.

           A value of zero indicates that no MTU options are sent."
   REFERENCE "RFC 2461 Section 6.2.1"
   DEFVAL { 0 }
   ::= { ipv6RouterAdvertEntry 7 }

ipv6RouterAdvertReachableTime OBJECT-TYPE
   SYNTAX     Unsigned32 (0..3600000)
   UNITS      "milliseconds"
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The value to be placed in the reachable time field in router
           advertisement messages sent from this interface.

           A value of zero in the router advertisement indicates that
           the advertisement isn't specifying a value for reachable
           time."
   REFERENCE "RFC 2461 Section 6.2.1"
   DEFVAL { 0 }
   ::= { ipv6RouterAdvertEntry 8 }

ipv6RouterAdvertRetransmitTime OBJECT-TYPE
   SYNTAX     Unsigned32
   UNITS      "milliseconds"
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The value to be placed in the retransmit timer field in
           router advertisements sent from this interface.

           A value of zero in the router advertisement indicates that
           the advertisement isn't specifying a value for retrans
           time."
   REFERENCE "RFC 2461 Section 6.2.1"
   DEFVAL { 0 }
   ::= { ipv6RouterAdvertEntry 9 }

ipv6RouterAdvertCurHopLimit OBJECT-TYPE
   SYNTAX     Unsigned32 (0..255)
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The default value to be placed in the current hop limit
           field in router advertisements sent from this interface.



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           The value should be set to the current diameter of the
           Internet.

           A value of zero in the router advertisement indicates that
           the advertisement isn't specifying a value for curHopLimit.

           The default should be set to the value specified in the IANA
           web pages (www.iana.org) at the time of implementation."
   REFERENCE "RFC 2461 Section 6.2.1"
   ::= { ipv6RouterAdvertEntry 10 }

ipv6RouterAdvertDefaultLifetime OBJECT-TYPE
   SYNTAX     Unsigned32 (0|4..9000)
   UNITS      "seconds"
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The value to be placed in the router lifetime field of
           router advertisements sent from this interface.  This value
           MUST be either 0 or between ipv6RouterAdvertMaxInterval and
           9000 seconds.

           A value of zero indicates that the router is not to be used
           as a default router.

           The default is 3 * ipv6RouterAdvertMaxInterval."
   REFERENCE "RFC 2461 Section 6.2.1"
   ::= { ipv6RouterAdvertEntry 11 }

ipv6RouterAdvertRowStatus OBJECT-TYPE
   SYNTAX     RowStatus
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
          "The status of this conceptual row.

           As all objects in this conceptual row have default values, a
           row can be created and made active by setting this object
           appropriately.

           The RowStatus TC requires that this DESCRIPTION clause
           states under which circumstances other objects in this row
           can be modified.  The value of this object has no effect on
           whether other objects in this conceptual row can be
           modified."
   ::= { ipv6RouterAdvertEntry 12 }

--



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-- ICMP section
--

icmp     OBJECT IDENTIFIER ::= { mib-2 5 }

--
-- ICMP non-message-specific counters
--

-- These object IDs are reserved, as they were used in earlier
-- versions of the MIB module.  In theory, OIDs are not assigned
-- until the specification is released as an RFC; however, as some
-- companies may have shipped code based on earlier versions of
-- the MIB, it seems best to reserve these OIDs.
-- ::= { icmp 27 }
-- ::= { icmp 28 }

icmpStatsTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IcmpStatsEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table of generic system-wide ICMP counters."
   ::= { icmp 29 }

icmpStatsEntry OBJECT-TYPE
   SYNTAX     IcmpStatsEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "A conceptual row in the icmpStatsTable."
   INDEX    { icmpStatsIPVersion }
   ::= { icmpStatsTable 1 }

IcmpStatsEntry ::= SEQUENCE {
       icmpStatsIPVersion  InetVersion,
       icmpStatsInMsgs     Counter32,
       icmpStatsInErrors   Counter32,
       icmpStatsOutMsgs    Counter32,
       icmpStatsOutErrors  Counter32
   }

icmpStatsIPVersion OBJECT-TYPE
   SYNTAX     InetVersion
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The IP version of the statistics."



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   ::= { icmpStatsEntry 1 }

icmpStatsInMsgs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of ICMP messages that the entity received.
           Note that this counter includes all those counted by
           icmpStatsInErrors."
   ::= { icmpStatsEntry 2 }

icmpStatsInErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of ICMP messages that the entity received but
           determined as having ICMP-specific errors (bad ICMP
           checksums, bad length, etc.)."
   ::= { icmpStatsEntry 3 }

icmpStatsOutMsgs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The total number of ICMP messages that the entity attempted
           to send.  Note that this counter includes all those counted
           by icmpStatsOutErrors."
   ::= { icmpStatsEntry 4 }

icmpStatsOutErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of ICMP messages that this entity did not send
           due to problems discovered within ICMP, such as a lack of
           buffers.  This value should not include errors discovered
           outside the ICMP layer, such as the inability of IP to route
           the resultant datagram.  In some implementations, there may
           be no types of error that contribute to this counter's
           value."
   ::= { icmpStatsEntry 5 }

--
-- per-version, per-message type ICMP counters



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--

icmpMsgStatsTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IcmpMsgStatsEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The table of system-wide per-version, per-message type ICMP
           counters."
   ::= { icmp 30 }

icmpMsgStatsEntry OBJECT-TYPE
   SYNTAX     IcmpMsgStatsEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "A conceptual row in the icmpMsgStatsTable.

           The system should track each ICMP type value, even if that
           ICMP type is not supported by the system.  However, a
           given row need not be instantiated unless a message of that
           type has been processed, i.e., the row for
           icmpMsgStatsType=X MAY be instantiated before but MUST be
           instantiated after the first message with Type=X is
           received or transmitted.  After receiving or transmitting
           any succeeding messages with Type=X, the relevant counter
           must be incremented."
   INDEX { icmpMsgStatsIPVersion, icmpMsgStatsType }
   ::= { icmpMsgStatsTable 1 }

IcmpMsgStatsEntry ::= SEQUENCE {
       icmpMsgStatsIPVersion  InetVersion,
       icmpMsgStatsType       Integer32,
       icmpMsgStatsInPkts     Counter32,
       icmpMsgStatsOutPkts    Counter32
   }

icmpMsgStatsIPVersion OBJECT-TYPE
   SYNTAX     InetVersion
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
          "The IP version of the statistics."
   ::= { icmpMsgStatsEntry 1 }

icmpMsgStatsType OBJECT-TYPE
   SYNTAX     Integer32 (0..255)
   MAX-ACCESS not-accessible



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   STATUS     current
   DESCRIPTION
          "The ICMP type field of the message type being counted by
           this row.

           Note that ICMP message types are scoped by the address type
           in use."
   REFERENCE "http://www.iana.org/assignments/icmp-parameters and
              http://www.iana.org/assignments/icmpv6-parameters"
   ::= { icmpMsgStatsEntry 2 }

icmpMsgStatsInPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of input packets for this AF and type."
   ::= { icmpMsgStatsEntry 3 }

icmpMsgStatsOutPkts OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
          "The number of output packets for this AF and type."
   ::= { icmpMsgStatsEntry 4 }
--
-- conformance information
--

ipMIBConformance OBJECT IDENTIFIER ::= { ipMIB 2 }

ipMIBCompliances OBJECT IDENTIFIER ::= { ipMIBConformance 1 }
ipMIBGroups      OBJECT IDENTIFIER ::= { ipMIBConformance 2 }

-- compliance statements
ipMIBCompliance2 MODULE-COMPLIANCE
   STATUS     current
   DESCRIPTION
           "The compliance statement for systems that implement IP -
            either IPv4 or IPv6.

           There are a number of INDEX objects that cannot be
           represented in the form of OBJECT clauses in SMIv2, but
           for which we have the following compliance requirements,
           expressed in OBJECT clause form in this description
           clause:




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           -- OBJECT        ipSystemStatsIPVersion
           -- SYNTAX        InetVersion {ipv4(1), ipv6(2)}
           -- DESCRIPTION
           --     This MIB requires support for only IPv4 and IPv6
           --     versions.
           --
           -- OBJECT        ipIfStatsIPVersion
           -- SYNTAX        InetVersion {ipv4(1), ipv6(2)}
           -- DESCRIPTION
           --     This MIB requires support for only IPv4 and IPv6
           --     versions.
           --
           -- OBJECT        icmpStatsIPVersion
           -- SYNTAX        InetVersion {ipv4(1), ipv6(2)}
           -- DESCRIPTION
           --     This MIB requires support for only IPv4 and IPv6
           --     versions.
           --
           -- OBJECT        icmpMsgStatsIPVersion
           -- SYNTAX        InetVersion {ipv4(1), ipv6(2)}
           -- DESCRIPTION
           --     This MIB requires support for only IPv4 and IPv6
           --     versions.
           --
           -- OBJECT        ipAddressPrefixType
           -- SYNTAX        InetAddressType {ipv4(1), ipv6(2)}
           -- DESCRIPTION
           --     This MIB requires support for only global IPv4 and
           --     IPv6 address types.
           --
           -- OBJECT        ipAddressPrefixPrefix
           -- SYNTAX        InetAddress (Size(4 | 16))
           -- DESCRIPTION
           --     This MIB requires support for only global IPv4 and
           --     IPv6 addresses and so the size can be either 4 or
           --     16 bytes.
           --
           -- OBJECT        ipAddressAddrType
           -- SYNTAX        InetAddressType {ipv4(1), ipv6(2),
           --                                ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This MIB requires support for only global and
           --     non-global IPv4 and IPv6 address types.
           --
           -- OBJECT        ipAddressAddr
           -- SYNTAX        InetAddress (Size(4 | 8 | 16 | 20))
           -- DESCRIPTION
           --     This MIB requires support for only global and



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           --     non-global IPv4 and IPv6 addresses and so the size
           --     can be 4, 8, 16, or 20 bytes.
           --
           -- OBJECT        ipNetToPhysicalNetAddressType
           -- SYNTAX        InetAddressType {ipv4(1), ipv6(2),
           --                                ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This MIB requires support for only global and
           --     non-global IPv4 and IPv6 address types.
           --
           -- OBJECT        ipNetToPhysicalNetAddress
           -- SYNTAX        InetAddress (Size(4 | 8 | 16 | 20))
           -- DESCRIPTION
           --     This MIB requires support for only global and
           --     non-global IPv4 and IPv6 addresses and so the size
           --     can be 4, 8, 16, or 20 bytes.
           --
           -- OBJECT        ipDefaultRouterAddressType
           -- SYNTAX        InetAddressType {ipv4(1), ipv6(2),
           --                                ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This MIB requires support for only global and
           --     non-global IPv4 and IPv6 address types.
           --
           -- OBJECT        ipDefaultRouterAddress
           -- SYNTAX        InetAddress (Size(4 | 8 | 16 | 20))
           -- DESCRIPTION
           --     This MIB requires support for only global and
           --     non-global IPv4 and IPv6 addresses and so the size
           --     can be 4, 8, 16, or 20 bytes."

   MODULE -- this module

   MANDATORY-GROUPS { ipSystemStatsGroup,   ipAddressGroup,
                      ipNetToPhysicalGroup, ipDefaultRouterGroup,
                      icmpStatsGroup }

   GROUP ipSystemStatsHCOctetGroup
   DESCRIPTION
          "This group is mandatory for systems that have an aggregate
           bandwidth of greater than 20MB.  Including this group does
           not allow an entity to neglect the 32 bit versions of these
           objects."

   GROUP ipSystemStatsHCPacketGroup
   DESCRIPTION
          "This group is mandatory for systems that have an aggregate
           bandwidth of greater than 650MB.  Including this group



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           does not allow an entity to neglect the 32 bit versions of
           these objects."

   GROUP ipIfStatsGroup
   DESCRIPTION
          "This group is optional for all systems."

   GROUP ipIfStatsHCOctetGroup
   DESCRIPTION
          "This group is mandatory for systems that include the
           ipIfStatsGroup and include links with bandwidths of greater
           than 20MB.  Including this group does not allow an entity to
           neglect the 32 bit versions of these objects."

   GROUP ipIfStatsHCPacketGroup
   DESCRIPTION
          "This group is mandatory for systems that include the
           ipIfStatsGroup and include links with bandwidths of greater
           than 650MB.  Including this group does not allow an entity
           to neglect the 32 bit versions of these objects."

   GROUP ipv4GeneralGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv4."

   GROUP ipv4IfGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv4."

   GROUP ipv4SystemStatsGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv4."

   GROUP ipv4SystemStatsHCPacketGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv4 and
           that have an aggregate bandwidth of greater than 650MB.
           Including this group does not allow an entity to neglect the
           32 bit versions of these objects."

   GROUP ipv4IfStatsGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv4 and
           including the ipIfStatsGroup."

   GROUP ipv4IfStatsHCPacketGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv4 and



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           including the ipIfStatsHCPacketGroup.  Including this group
           does not allow an entity to neglect the 32 bit versions of
           these objects."

   GROUP ipv6GeneralGroup2
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv6."

   GROUP ipv6IfGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv6."

   GROUP ipAddressPrefixGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv6."

   GROUP ipv6ScopeGroup
   DESCRIPTION
          "This group is mandatory for all systems supporting IPv6."

   GROUP ipv6RouterAdvertGroup
   DESCRIPTION
          "This group is mandatory for all IPv6 routers."

   GROUP ipLastChangeGroup
   DESCRIPTION
          "This group is optional for all agents."

   OBJECT     ipv6IpForwarding
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6IpDefaultHopLimit
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv4InterfaceEnableStatus
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6InterfaceEnableStatus
   MIN-ACCESS read-only



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   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6InterfaceForwarding
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipAddressSpinLock
   MIN-ACCESS not-accessible
   DESCRIPTION
          "An agent is not required to provide write access to this
           object.  However, if an agent provides write access to any
           of the other objects in the ipAddressGroup, it SHOULD
           provide write access to this object as well."

   OBJECT     ipAddressIfIndex
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write or create access
           to this object."

   OBJECT     ipAddressType
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write or create access
           to this object."

   OBJECT     ipAddressStatus
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write or create access
           to this object."

   OBJECT     ipAddressRowStatus
   SYNTAX     RowStatus { active(1) }
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write or create access
           to this object."

   OBJECT     ipAddressStorageType
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write or create access
           to this object.



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           If an agent allows this object to be written or created, it
           is not required to allow this object to be set to readOnly,
           permanent, or nonVolatile."

   OBJECT     ipNetToPhysicalPhysAddress
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write or create access
           to this object."

   OBJECT     ipNetToPhysicalType
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write or create access
           to this object."

   OBJECT     ipv6RouterAdvertSpinLock
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object.  However, if an agent provides write access to
           any of the other objects in the ipv6RouterAdvertGroup, it
           SHOULD provide write access to this object as well."

   OBJECT     ipv6RouterAdvertSendAdverts
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertMaxInterval
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertMinInterval
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertManagedFlag
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."




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   OBJECT     ipv6RouterAdvertOtherConfigFlag
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertLinkMTU
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertReachableTime
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertRetransmitTime
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertCurHopLimit
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertDefaultLifetime
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write access to this
           object."

   OBJECT     ipv6RouterAdvertRowStatus
   MIN-ACCESS read-only
   DESCRIPTION
          "An agent is not required to provide write or create access
           to this object."

   ::= { ipMIBCompliances 2 }

-- units of conformance

ipv4GeneralGroup OBJECT-GROUP
   OBJECTS   { ipForwarding, ipDefaultTTL, ipReasmTimeout }



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   STATUS     current
   DESCRIPTION
          "The group of IPv4-specific objects for basic management of
           IPv4 entities."
   ::= { ipMIBGroups 3 }

ipv4IfGroup OBJECT-GROUP
   OBJECTS   { ipv4InterfaceReasmMaxSize, ipv4InterfaceEnableStatus,
               ipv4InterfaceRetransmitTime }
   STATUS     current
   DESCRIPTION
          "The group of IPv4-specific objects for basic management of
           IPv4 interfaces."
   ::= { ipMIBGroups 4 }

ipv6GeneralGroup2 OBJECT-GROUP
   OBJECTS { ipv6IpForwarding, ipv6IpDefaultHopLimit }
   STATUS     current
   DESCRIPTION
          "The IPv6 group of objects providing for basic management of
           IPv6 entities."
   ::= { ipMIBGroups 5 }

ipv6IfGroup OBJECT-GROUP
   OBJECTS   { ipv6InterfaceReasmMaxSize,   ipv6InterfaceIdentifier,
               ipv6InterfaceEnableStatus,   ipv6InterfaceReachableTime,
               ipv6InterfaceRetransmitTime, ipv6InterfaceForwarding }
   STATUS     current
   DESCRIPTION
          "The group of IPv6-specific objects for basic management of
           IPv6 interfaces."
   ::= { ipMIBGroups 6 }

ipLastChangeGroup OBJECT-GROUP
   OBJECTS   { ipv4InterfaceTableLastChange,
               ipv6InterfaceTableLastChange,
               ipIfStatsTableLastChange }
   STATUS     current
   DESCRIPTION
          "The last change objects associated with this MIB.  These
           objects are optional for all agents.  They SHOULD be
           implemented on agents where it is possible to determine the
           proper values.  Where it is not possible to determine the
           proper values, for example when the tables are split amongst
           several sub-agents using AgentX, the agent MUST NOT
           implement these objects to return an incorrect or static
           value."
   ::= { ipMIBGroups 7 }



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ipSystemStatsGroup OBJECT-GROUP
   OBJECTS   { ipSystemStatsInReceives,
               ipSystemStatsInOctets,
               ipSystemStatsInHdrErrors,
               ipSystemStatsInNoRoutes,
               ipSystemStatsInAddrErrors,
               ipSystemStatsInUnknownProtos,
               ipSystemStatsInTruncatedPkts,
               ipSystemStatsInForwDatagrams,
               ipSystemStatsReasmReqds,
               ipSystemStatsReasmOKs,
               ipSystemStatsReasmFails,
               ipSystemStatsInDiscards,
               ipSystemStatsInDelivers,
               ipSystemStatsOutRequests,
               ipSystemStatsOutNoRoutes,
               ipSystemStatsOutForwDatagrams,
               ipSystemStatsOutDiscards,
               ipSystemStatsOutFragReqds,
               ipSystemStatsOutFragOKs,
               ipSystemStatsOutFragFails,
               ipSystemStatsOutFragCreates,
               ipSystemStatsOutTransmits,
               ipSystemStatsOutOctets,
               ipSystemStatsInMcastPkts,
               ipSystemStatsInMcastOctets,
               ipSystemStatsOutMcastPkts,
               ipSystemStatsOutMcastOctets,
               ipSystemStatsDiscontinuityTime,
               ipSystemStatsRefreshRate }
   STATUS     current
   DESCRIPTION
          "IP system wide statistics."
   ::= { ipMIBGroups 8 }

ipv4SystemStatsGroup OBJECT-GROUP
   OBJECTS   { ipSystemStatsInBcastPkts, ipSystemStatsOutBcastPkts }
   STATUS     current
   DESCRIPTION
          "IPv4 only system wide statistics."
   ::= { ipMIBGroups 9 }

ipSystemStatsHCOctetGroup OBJECT-GROUP
   OBJECTS   { ipSystemStatsHCInOctets,
               ipSystemStatsHCOutOctets,
               ipSystemStatsHCInMcastOctets,
               ipSystemStatsHCOutMcastOctets
}



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   STATUS     current
   DESCRIPTION
          "IP system wide statistics for systems that may overflow the
           standard octet counters within 1 hour."
   ::= { ipMIBGroups 10 }

ipSystemStatsHCPacketGroup OBJECT-GROUP
   OBJECTS   { ipSystemStatsHCInReceives,
               ipSystemStatsHCInForwDatagrams,
               ipSystemStatsHCInDelivers,
               ipSystemStatsHCOutRequests,
               ipSystemStatsHCOutForwDatagrams,
               ipSystemStatsHCOutTransmits,
               ipSystemStatsHCInMcastPkts,
               ipSystemStatsHCOutMcastPkts
}
   STATUS     current
   DESCRIPTION
          "IP system wide statistics for systems that may overflow the
           standard packet counters within 1 hour."
   ::= { ipMIBGroups 11 }

ipv4SystemStatsHCPacketGroup OBJECT-GROUP
   OBJECTS   { ipSystemStatsHCInBcastPkts,
               ipSystemStatsHCOutBcastPkts }
   STATUS     current
   DESCRIPTION
          "IPv4 only system wide statistics for systems that may
           overflow the standard packet counters within 1 hour."
   ::= { ipMIBGroups 12 }

ipIfStatsGroup OBJECT-GROUP
   OBJECTS   { ipIfStatsInReceives,        ipIfStatsInOctets,
               ipIfStatsInHdrErrors,       ipIfStatsInNoRoutes,
               ipIfStatsInAddrErrors,      ipIfStatsInUnknownProtos,
               ipIfStatsInTruncatedPkts,   ipIfStatsInForwDatagrams,
               ipIfStatsReasmReqds,        ipIfStatsReasmOKs,
               ipIfStatsReasmFails,        ipIfStatsInDiscards,
               ipIfStatsInDelivers,        ipIfStatsOutRequests,
               ipIfStatsOutForwDatagrams,  ipIfStatsOutDiscards,
               ipIfStatsOutFragReqds,      ipIfStatsOutFragOKs,
               ipIfStatsOutFragFails,      ipIfStatsOutFragCreates,
               ipIfStatsOutTransmits,      ipIfStatsOutOctets,
               ipIfStatsInMcastPkts,       ipIfStatsInMcastOctets,
               ipIfStatsOutMcastPkts,      ipIfStatsOutMcastOctets,
               ipIfStatsDiscontinuityTime, ipIfStatsRefreshRate }
   STATUS     current
   DESCRIPTION



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          "IP per-interface statistics."
   ::= { ipMIBGroups 13 }

ipv4IfStatsGroup OBJECT-GROUP
   OBJECTS   { ipIfStatsInBcastPkts, ipIfStatsOutBcastPkts }
   STATUS     current
   DESCRIPTION
          "IPv4 only per-interface statistics."
   ::= { ipMIBGroups 14 }

ipIfStatsHCOctetGroup OBJECT-GROUP
   OBJECTS   { ipIfStatsHCInOctets,      ipIfStatsHCOutOctets,
               ipIfStatsHCInMcastOctets, ipIfStatsHCOutMcastOctets }
   STATUS     current
   DESCRIPTION
          "IP per-interfaces statistics for systems that include
           interfaces that may overflow the standard octet
           counters within 1 hour."
   ::= { ipMIBGroups 15 }

ipIfStatsHCPacketGroup OBJECT-GROUP
   OBJECTS   { ipIfStatsHCInReceives,       ipIfStatsHCInForwDatagrams,
               ipIfStatsHCInDelivers,       ipIfStatsHCOutRequests,
               ipIfStatsHCOutForwDatagrams, ipIfStatsHCOutTransmits,
               ipIfStatsHCInMcastPkts,      ipIfStatsHCOutMcastPkts }
   STATUS     current
   DESCRIPTION
          "IP per-interfaces statistics for systems that include
           interfaces that may overflow the standard packet counters
           within 1 hour."
   ::= { ipMIBGroups 16 }

ipv4IfStatsHCPacketGroup OBJECT-GROUP
   OBJECTS   { ipIfStatsHCInBcastPkts, ipIfStatsHCOutBcastPkts }
   STATUS     current
   DESCRIPTION
          "IPv4 only per-interface statistics for systems that include
           interfaces that may overflow the standard packet counters
           within 1 hour."
   ::= { ipMIBGroups 17 }

ipAddressPrefixGroup OBJECT-GROUP
   OBJECTS   { ipAddressPrefixOrigin,
               ipAddressPrefixOnLinkFlag,
               ipAddressPrefixAutonomousFlag,
               ipAddressPrefixAdvPreferredLifetime,
               ipAddressPrefixAdvValidLifetime }
   STATUS     current



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   DESCRIPTION
          "The group of objects for providing information about address
           prefixes used by this node."
   ::= { ipMIBGroups 18 }

ipAddressGroup OBJECT-GROUP
   OBJECTS   { ipAddressSpinLock,  ipAddressIfIndex,
               ipAddressType,      ipAddressPrefix,
               ipAddressOrigin,    ipAddressStatus,
               ipAddressCreated,   ipAddressLastChanged,
               ipAddressRowStatus, ipAddressStorageType }
   STATUS     current
   DESCRIPTION
          "The group of objects for providing information about the
           addresses relevant to this entity's interfaces."
   ::= { ipMIBGroups 19 }

ipNetToPhysicalGroup OBJECT-GROUP
   OBJECTS   { ipNetToPhysicalPhysAddress, ipNetToPhysicalLastUpdated,
               ipNetToPhysicalType,        ipNetToPhysicalState,
               ipNetToPhysicalRowStatus }
   STATUS     current
   DESCRIPTION
          "The group of objects for providing information about the
           mappings of network address to physical address known to
           this node."
   ::= { ipMIBGroups 20 }

ipv6ScopeGroup OBJECT-GROUP
   OBJECTS   { ipv6ScopeZoneIndexLinkLocal,
               ipv6ScopeZoneIndex3,
               ipv6ScopeZoneIndexAdminLocal,
               ipv6ScopeZoneIndexSiteLocal,
               ipv6ScopeZoneIndex6,
               ipv6ScopeZoneIndex7,
               ipv6ScopeZoneIndexOrganizationLocal,
               ipv6ScopeZoneIndex9,
               ipv6ScopeZoneIndexA,
               ipv6ScopeZoneIndexB,
               ipv6ScopeZoneIndexC,
               ipv6ScopeZoneIndexD }
   STATUS     current
   DESCRIPTION
          "The group of objects for managing IPv6 scope zones."
   ::= { ipMIBGroups 21 }

ipDefaultRouterGroup OBJECT-GROUP
   OBJECTS   { ipDefaultRouterLifetime, ipDefaultRouterPreference }



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   STATUS     current
   DESCRIPTION
          "The group of objects for providing information about default
           routers known to this node."
   ::= { ipMIBGroups 22 }

ipv6RouterAdvertGroup OBJECT-GROUP
   OBJECTS   { ipv6RouterAdvertSpinLock,
               ipv6RouterAdvertSendAdverts,
               ipv6RouterAdvertMaxInterval,
               ipv6RouterAdvertMinInterval,
               ipv6RouterAdvertManagedFlag,
               ipv6RouterAdvertOtherConfigFlag,
               ipv6RouterAdvertLinkMTU,
               ipv6RouterAdvertReachableTime,
               ipv6RouterAdvertRetransmitTime,
               ipv6RouterAdvertCurHopLimit,
               ipv6RouterAdvertDefaultLifetime,
               ipv6RouterAdvertRowStatus
}
   STATUS     current
   DESCRIPTION
          "The group of objects for controlling information advertised
           by IPv6 routers."
   ::= { ipMIBGroups 23 }

icmpStatsGroup OBJECT-GROUP
   OBJECTS   {icmpStatsInMsgs,    icmpStatsInErrors,
              icmpStatsOutMsgs,   icmpStatsOutErrors,
              icmpMsgStatsInPkts, icmpMsgStatsOutPkts }
   STATUS     current
   DESCRIPTION
          "The group of objects providing ICMP statistics."
   ::= { ipMIBGroups 24 }

--
-- Deprecated objects
--

ipInReceives OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The total number of input datagrams received from
           interfaces, including those received in error.

           This object has been deprecated, as a new IP version-neutral



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           table has been added.  It is loosely replaced by
           ipSystemStatsInRecieves."
   ::= { ip 3 }

ipInHdrErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of input datagrams discarded due to errors in
           their IPv4 headers, including bad checksums, version number
           mismatch, other format errors, time-to-live exceeded, errors
           discovered in processing their IPv4 options, etc.

           This object has been deprecated as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsInHdrErrors."
   ::= { ip 4 }

ipInAddrErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of input datagrams discarded because the IPv4
           address in their IPv4 header's destination field was not a
           valid address to be received at this entity.  This count
           includes invalid addresses (e.g., 0.0.0.0) and addresses of
           unsupported Classes (e.g., Class E).  For entities which are
           not IPv4 routers, and therefore do not forward datagrams,
           this counter includes datagrams discarded because the
           destination address was not a local address.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsInAddrErrors."
   ::= { ip 5 }

ipForwDatagrams OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of input datagrams for which this entity was not
           their final IPv4 destination, as a result of which an
           attempt was made to find a route to forward them to that
           final destination.  In entities which do not act as IPv4
           routers, this counter will include only those packets which



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           were Source-Routed via this entity, and the Source-Route
           option processing was successful.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsInForwDatagrams."
   ::= { ip 6 }

ipInUnknownProtos OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of locally-addressed datagrams received
           successfully but discarded because of an unknown or
           unsupported protocol.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsInUnknownProtos."
   ::= { ip 7 }

ipInDiscards OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of input IPv4 datagrams for which no problems
           were encountered to prevent their continued processing, but
           which were discarded (e.g., for lack of buffer space).  Note
           that this counter does not include any datagrams discarded
           while awaiting re-assembly.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsInDiscards."
   ::= { ip 8 }

ipInDelivers OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The total number of input datagrams successfully delivered
           to IPv4 user-protocols (including ICMP).

           This object has been deprecated as a new IP version neutral
           table has been added.  It is loosely replaced by



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           ipSystemStatsIndelivers."
   ::= { ip 9 }

ipOutRequests OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The total number of IPv4 datagrams which local IPv4 user
           protocols (including ICMP) supplied to IPv4 in requests for
           transmission.  Note that this counter does not include any
           datagrams counted in ipForwDatagrams.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsOutRequests."
   ::= { ip 10 }

ipOutDiscards OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of output IPv4 datagrams for which no problem was
           encountered to prevent their transmission to their
           destination, but which were discarded (e.g., for lack of
           buffer space).  Note that this counter would include
           datagrams counted in ipForwDatagrams if any such packets met
           this (discretionary) discard criterion.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsOutDiscards."
   ::= { ip 11 }

ipOutNoRoutes OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of IPv4 datagrams discarded because no route
           could be found to transmit them to their destination.  Note
           that this counter includes any packets counted in
           ipForwDatagrams which meet this `no-route' criterion.  Note
           that this includes any datagrams which a host cannot route
           because all of its default routers are down.

           This object has been deprecated, as a new IP version-neutral



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           table has been added.  It is loosely replaced by
           ipSystemStatsOutNoRoutes."
   ::= { ip 12 }

ipReasmReqds OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of IPv4 fragments received which needed to be
           reassembled at this entity.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsReasmReqds."
   ::= { ip 14 }

ipReasmOKs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of IPv4 datagrams successfully re-assembled.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsReasmOKs."
   ::= { ip 15 }

ipReasmFails OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of failures detected by the IPv4 re-assembly
           algorithm (for whatever reason: timed out, errors, etc).
           Note that this is not necessarily a count of discarded IPv4
           fragments since some algorithms (notably the algorithm in
           RFC 815) can lose track of the number of fragments by
           combining them as they are received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsReasmFails."
   ::= { ip 16 }

ipFragOKs OBJECT-TYPE
   SYNTAX     Counter32



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   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of IPv4 datagrams that have been successfully
           fragmented at this entity.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsOutFragOKs."
   ::= { ip 17 }

ipFragFails OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of IPv4 datagrams that have been discarded
           because they needed to be fragmented at this entity but
           could not be, e.g., because their Don't Fragment flag was
           set.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsOutFragFails."
   ::= { ip 18 }

ipFragCreates OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of IPv4 datagram fragments that have been
           generated as a result of fragmentation at this entity.

           This object has been deprecated as a new IP version neutral
           table has been added.  It is loosely replaced by
           ipSystemStatsOutFragCreates."
   ::= { ip 19 }

ipRoutingDiscards OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of routing entries which were chosen to be
           discarded even though they are valid.  One possible reason
           for discarding such an entry could be to free-up buffer
           space for other routing entries.



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           This object was defined in pre-IPv6 versions of the IP MIB.
           It was implicitly IPv4 only, but the original specifications
           did not indicate this protocol restriction.  In order to
           clarify the specifications, this object has been deprecated
           and a similar, but more thoroughly clarified, object has
           been added to the IP-FORWARD-MIB."
   ::= { ip 23 }

-- the deprecated IPv4 address table

ipAddrTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpAddrEntry
   MAX-ACCESS not-accessible
   STATUS     deprecated
   DESCRIPTION
          "The table of addressing information relevant to this
           entity's IPv4 addresses.

           This table has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by the
           ipAddressTable although several objects that weren't deemed
           useful weren't carried forward while another
           (ipAdEntReasmMaxSize) was moved to the ipv4InterfaceTable."
   ::= { ip 20 }

ipAddrEntry OBJECT-TYPE
   SYNTAX     IpAddrEntry
   MAX-ACCESS not-accessible
   STATUS     deprecated
   DESCRIPTION
          "The addressing information for one of this entity's IPv4
           addresses."
   INDEX      { ipAdEntAddr }
   ::= { ipAddrTable 1 }

IpAddrEntry ::= SEQUENCE {
       ipAdEntAddr          IpAddress,
       ipAdEntIfIndex       INTEGER,
       ipAdEntNetMask       IpAddress,
       ipAdEntBcastAddr     INTEGER,
       ipAdEntReasmMaxSize  INTEGER
   }

ipAdEntAddr OBJECT-TYPE
   SYNTAX     IpAddress
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION



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          "The IPv4 address to which this entry's addressing
           information pertains."
   ::= { ipAddrEntry 1 }

ipAdEntIfIndex OBJECT-TYPE
   SYNTAX     INTEGER (1..2147483647)
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The index value which uniquely identifies the interface to
           which this entry is applicable.  The interface identified by
           a particular value of this index is the same interface as
           identified by the same value of the IF-MIB's ifIndex."
   ::= { ipAddrEntry 2 }

ipAdEntNetMask OBJECT-TYPE
   SYNTAX     IpAddress
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The subnet mask associated with the IPv4 address of this
           entry.  The value of the mask is an IPv4 address with all
           the network bits set to 1 and all the hosts bits set to 0."
   ::= { ipAddrEntry 3 }

ipAdEntBcastAddr OBJECT-TYPE
   SYNTAX     INTEGER (0..1)
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The value of the least-significant bit in the IPv4 broadcast
           address used for sending datagrams on the (logical)
           interface associated with the IPv4 address of this entry.
           For example, when the Internet standard all-ones broadcast
           address is used, the value will be 1.  This value applies to
           both the subnet and network broadcast addresses used by the
           entity on this (logical) interface."
   ::= { ipAddrEntry 4 }

ipAdEntReasmMaxSize OBJECT-TYPE
   SYNTAX     INTEGER (0..65535)
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The size of the largest IPv4 datagram which this entity can
           re-assemble from incoming IPv4 fragmented datagrams received
           on this interface."
   ::= { ipAddrEntry 5 }



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-- the deprecated IPv4 Address Translation table

-- The Address Translation tables contain the IpAddress to
-- "physical" address equivalences.  Some interfaces do not
-- use translation tables for determining address
-- equivalences (e.g., DDN-X.25 has an algorithmic method);
-- if all interfaces are of this type, then the Address
-- Translation table is empty, i.e., has zero entries.

ipNetToMediaTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpNetToMediaEntry
   MAX-ACCESS not-accessible
   STATUS     deprecated
   DESCRIPTION
          "The IPv4 Address Translation table used for mapping from
           IPv4 addresses to physical addresses.

           This table has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by the
           ipNetToPhysicalTable."
   ::= { ip 22 }

ipNetToMediaEntry OBJECT-TYPE
   SYNTAX     IpNetToMediaEntry
   MAX-ACCESS not-accessible
   STATUS     deprecated
   DESCRIPTION
          "Each entry contains one IpAddress to `physical' address
           equivalence."
   INDEX       { ipNetToMediaIfIndex,
                 ipNetToMediaNetAddress }
   ::= { ipNetToMediaTable 1 }

IpNetToMediaEntry ::= SEQUENCE {
       ipNetToMediaIfIndex      INTEGER,
       ipNetToMediaPhysAddress  PhysAddress,
       ipNetToMediaNetAddress   IpAddress,
       ipNetToMediaType         INTEGER
   }

ipNetToMediaIfIndex OBJECT-TYPE
   SYNTAX     INTEGER (1..2147483647)
   MAX-ACCESS read-create
   STATUS     deprecated
   DESCRIPTION
          "The interface on which this entry's equivalence is
           effective.  The interface identified by a particular value
           of this index is the same interface as identified by the



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           same value of the IF-MIB's ifIndex.

           This object predates the rule limiting index objects to a
           max access value of 'not-accessible' and so continues to use
           a value of 'read-create'."
   ::= { ipNetToMediaEntry 1 }

ipNetToMediaPhysAddress OBJECT-TYPE
   SYNTAX     PhysAddress (SIZE(0..65535))
   MAX-ACCESS read-create
   STATUS     deprecated
   DESCRIPTION
          "The media-dependent `physical' address.  This object should
           return 0 when this entry is in the 'incomplete' state.

           As the entries in this table are typically not persistent
           when this object is written the entity should not save the
           change to non-volatile storage.  Note: a stronger
           requirement is not used because this object was previously
           defined."
   ::= { ipNetToMediaEntry 2 }

ipNetToMediaNetAddress OBJECT-TYPE
   SYNTAX     IpAddress
   MAX-ACCESS read-create
   STATUS     deprecated
   DESCRIPTION
          "The IpAddress corresponding to the media-dependent
           `physical' address.

           This object predates the rule limiting index objects to a
           max access value of 'not-accessible' and so continues to use
           a value of 'read-create'."
   ::= { ipNetToMediaEntry 3 }

ipNetToMediaType OBJECT-TYPE
   SYNTAX     INTEGER {
               other(1),        -- none of the following
               invalid(2),      -- an invalidated mapping
               dynamic(3),
               static(4)
           }
   MAX-ACCESS read-create
   STATUS     deprecated
   DESCRIPTION
          "The type of mapping.

           Setting this object to the value invalid(2) has the effect



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           of invalidating the corresponding entry in the
           ipNetToMediaTable.  That is, it effectively dis-associates
           the interface identified with said entry from the mapping
           identified with said entry.  It is an implementation-
           specific matter as to whether the agent removes an
           invalidated entry from the table.  Accordingly, management
           stations must be prepared to receive tabular information
           from agents that corresponds to entries not currently in
           use.  Proper interpretation of such entries requires
           examination of the relevant ipNetToMediaType object.

           As the entries in this table are typically not persistent
           when this object is written the entity should not save the
           change to non-volatile storage.  Note: a stronger
           requirement is not used because this object was previously
           defined."
   ::= { ipNetToMediaEntry 4 }

-- the deprecated ICMP group

icmpInMsgs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The total number of ICMP messages which the entity received.
           Note that this counter includes all those counted by
           icmpInErrors.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           icmpStatsInMsgs."
   ::= { icmp 1 }

icmpInErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP messages which the entity received but
           determined as having ICMP-specific errors (bad ICMP
           checksums, bad length, etc.).

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           icmpStatsInErrors."
   ::= { icmp 2 }




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icmpInDestUnreachs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Destination Unreachable messages
           received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 3 }

icmpInTimeExcds OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Time Exceeded messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 4 }

icmpInParmProbs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Parameter Problem messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 5 }

icmpInSrcQuenchs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Source Quench messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 6 }



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icmpInRedirects OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Redirect messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 7 }

icmpInEchos OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Echo (request) messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 8 }

icmpInEchoReps OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Echo Reply messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 9 }

icmpInTimestamps OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Timestamp (request) messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 10 }




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icmpInTimestampReps OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Timestamp Reply messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 11 }

icmpInAddrMasks OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Address Mask Request messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 12 }

icmpInAddrMaskReps OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Address Mask Reply messages received.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 13 }

icmpOutMsgs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The total number of ICMP messages which this entity
           attempted to send.  Note that this counter includes all
           those counted by icmpOutErrors.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           icmpStatsOutMsgs."



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   ::= { icmp 14 }

icmpOutErrors OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP messages which this entity did not send
           due to problems discovered within ICMP, such as a lack of
           buffers.  This value should not include errors discovered
           outside the ICMP layer, such as the inability of IP to route
           the resultant datagram.  In some implementations, there may
           be no types of error which contribute to this counter's
           value.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by
           icmpStatsOutErrors."
   ::= { icmp 15 }

icmpOutDestUnreachs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Destination Unreachable messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 16 }

icmpOutTimeExcds OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Time Exceeded messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 17 }

icmpOutParmProbs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated



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   DESCRIPTION
          "The number of ICMP Parameter Problem messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 18 }

icmpOutSrcQuenchs OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Source Quench messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 19 }

icmpOutRedirects OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Redirect messages sent.  For a host, this
           object will always be zero, since hosts do not send
           redirects.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 20 }

icmpOutEchos OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Echo (request) messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 21 }

icmpOutEchoReps OBJECT-TYPE
   SYNTAX     Counter32



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   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Echo Reply messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 22 }

icmpOutTimestamps OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Timestamp (request) messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 23 }

icmpOutTimestampReps OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Timestamp Reply messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 24 }

icmpOutAddrMasks OBJECT-TYPE
   SYNTAX     Counter32
   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Address Mask Request messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 25 }

icmpOutAddrMaskReps OBJECT-TYPE
   SYNTAX     Counter32



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   MAX-ACCESS read-only
   STATUS     deprecated
   DESCRIPTION
          "The number of ICMP Address Mask Reply messages sent.

           This object has been deprecated, as a new IP version-neutral
           table has been added.  It is loosely replaced by a column in
           the icmpMsgStatsTable."
   ::= { icmp 26 }

-- deprecated conformance information
-- deprecated compliance statements

ipMIBCompliance MODULE-COMPLIANCE
   STATUS     deprecated
   DESCRIPTION
          "The compliance statement for systems that implement only
           IPv4.  For version-independence, this compliance statement
           is deprecated in favor of ipMIBCompliance2."
   MODULE  -- this module
       MANDATORY-GROUPS { ipGroup,
                          icmpGroup }
   ::= { ipMIBCompliances 1 }

-- deprecated units of conformance

ipGroup OBJECT-GROUP
   OBJECTS   { ipForwarding,           ipDefaultTTL,
               ipInReceives,           ipInHdrErrors,
               ipInAddrErrors,         ipForwDatagrams,
               ipInUnknownProtos,      ipInDiscards,
               ipInDelivers,           ipOutRequests,
               ipOutDiscards,          ipOutNoRoutes,
               ipReasmTimeout,         ipReasmReqds,
               ipReasmOKs,             ipReasmFails,
               ipFragOKs,              ipFragFails,
               ipFragCreates,          ipAdEntAddr,
               ipAdEntIfIndex,         ipAdEntNetMask,
               ipAdEntBcastAddr,       ipAdEntReasmMaxSize,
               ipNetToMediaIfIndex,    ipNetToMediaPhysAddress,
               ipNetToMediaNetAddress, ipNetToMediaType,
               ipRoutingDiscards
}
   STATUS     deprecated
   DESCRIPTION
          "The ip group of objects providing for basic management of IP
           entities, exclusive of the management of IP routes.




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           As part of the version independence, this group has been
           deprecated.  "
   ::= { ipMIBGroups 1 }

icmpGroup OBJECT-GROUP
   OBJECTS   { icmpInMsgs,          icmpInErrors,
               icmpInDestUnreachs,  icmpInTimeExcds,
               icmpInParmProbs,     icmpInSrcQuenchs,
               icmpInRedirects,     icmpInEchos,
               icmpInEchoReps,      icmpInTimestamps,
               icmpInTimestampReps, icmpInAddrMasks,
               icmpInAddrMaskReps,  icmpOutMsgs,
               icmpOutErrors,       icmpOutDestUnreachs,
               icmpOutTimeExcds,    icmpOutParmProbs,
               icmpOutSrcQuenchs,   icmpOutRedirects,
               icmpOutEchos,        icmpOutEchoReps,
               icmpOutTimestamps,   icmpOutTimestampReps,
               icmpOutAddrMasks,    icmpOutAddrMaskReps }
   STATUS     deprecated
   DESCRIPTION
          "The icmp group of objects providing ICMP statistics.

           As part of the version independence, this group has been
           deprecated.  "
   ::= { ipMIBGroups 2 }

END

6.  Previous Work

  This document contains objects modified from RFC 1213 [11], RFC 2011
  [12], RFC 2465 [13], and RFC 2466 [14].

7.  References

7.1.  Normative References

  [1]  McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Structure of
       Management Information Version 2 (SMIv2)", STD 58, RFC 2578,
       April 1999.

  [2]  McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Textual
       Conventions for SMIv2", STD 58, RFC 2579, April 1999.

  [3]  McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance
       Statements for SMIv2", STD 58, RFC 2580, April 1999.





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  [4]  Narten, T., Nordmark, E., and W. Simpson, "Neighbor Discovery
       for IP Version 6 (IPv6)", RFC 2461, December 1998.

  [5]  Thomson, S. and T. Narten, "IPv6 Stateless Address
       Autoconfiguration", RFC 2462, December 1998.

  [6]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB",
       RFC 2863, June 2000.

  [7]  Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder,
       "Textual Conventions for Internet Network Addresses", RFC 4001,
       February 2005.

  [8]  Draves, R. and D. Thaler, "Default Router Preferences and More-
       Specific Routes", RFC 4191, November 2005.

7.2.  Informative References

  [9]  Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction
       and Applicability Statements for Internet-Standard Management
       Framework", RFC 3410, December 2002.

  [10] Plummer, D., "Ethernet Address Resolution Protocol: Or
       converting network protocol addresses to 48.bit Ethernet address
       for transmission on Ethernet hardware", STD 37, RFC 826,
       November 1982.

  [11] McCloghrie, K. and M. Rose, "Management Information Base for
       Network Management of TCP/IP-based internets:MIB-II", STD 17,
       RFC 1213, March 1991.

  [12] McCloghrie, K., "SNMPv2 Management Information Base for the
       Internet Protocol using SMIv2", RFC 2011, November 1996.

  [13] Haskin, D. and S. Onishi, "Management Information Base for IP
       Version 6: Textual Conventions and General Group", RFC 2465,
       December 1998.

  [14] Haskin, D. and S. Onishi, "Management Information Base for IP
       Version 6: ICMPv6 Group", RFC 2466, December 1998.

  [15] Narten, T. and R. Draves, "Privacy Extensions for Stateless
       Address Autoconfiguration in IPv6", RFC 3041, January 2001.

  [16] Haberman, B., "IP Forwarding Table MIB", RFC 4292, April 2006.






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  [17] Hinden, R. and S. Deering, "IP Version 6 Addressing
       Architecture", RFC 4291, February 2006.

8.  Security Considerations

  There are a number of management objects defined in this MIB module
  with a MAX-ACCESS clause of read-write and/or read-create.  Such
  objects may be considered sensitive or vulnerable in some network
  environments.  The support for SET operations in a non-secure
  environment without proper protection can have a negative effect on
  network operations.  These are the tables and objects and their
  sensitivity/vulnerability:

     ipForwarding and ipv6IpForwarding - these objects allow a manager
     to enable or disable the routing functions on the entity.  By
     disabling the routing functions, an attacker would possibly be
     able to deny service to users.  By enabling the routing functions,
     an attacker could open a conduit into an area.  This might result
     in the area providing transit for packets it shouldn't or might
     allow the attacker access to the area bypassing security
     safeguards.

     ipDefaultTTL and ipv6IpDefaultHopLimit - these objects allow a
     manager to determine the diameter of the valid area for a packet.
     By decreasing the value of these objects, an attacker could cause
     packets to be discarded before reaching their destinations.

     ipv4InterfaceEnableStatus and ipv6InterfaceEnableStatus - these
     objects allow a manager to enable or disable IPv4 and IPv6 on a
     specific interface.  By enabling a protocol on an interface, an
     attacker might be able to create an unsecured path into a node (or
     through it if routing is also enabled).  By disabling a protocol
     on an interface, an attacker might be able to force packets to be
     routed through some other interface or deny access to some or all
     of the network via that protocol.

     ipAddressTable - the objects in this table specify the addresses
     in use on this node.  By modifying this information, an attacker
     can cause a node to either ignore messages destined to it or
     accept (at least at the IP layer) messages it would otherwise
     ignore.  The use of filtering or security associations may reduce
     the potential damage in the latter case.

     ipv6RouterAdvertTable - the objects in this table specify the
     information that a router should propagate in its routing
     advertisement messages.  By modifying this information, an
     attacker can interfere with the auto-configuration of all hosts on
     the link.  Most modifications to this table will result in a



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     denial of service to some or all hosts on the link.  However two
     objects, ipv6RouterAdvertManagedFlag and
     ipv6RouterAdvertOtherConfigFlag, indicate if a host should acquire
     configuration information from some other source.  By enabling
     these, an attacker might be able to cause a host to retrieve its
     configuration information from a compromised source.

     ipNetToPhysicalPhysAddress and ipNetToPhysicalType - these objects
     specify information used to translate a network (IP) address into
     a media dependent address.  By modifying these objects, an
     attacker could disable communication with a node or divert
     messages from one node to another.  However, the attacker may be
     able to carry out a similar attack by simply responding to the ARP
     or ND request made by the target node.

  Some of the readable objects in this MIB module (i.e., objects with a
  MAX-ACCESS other than not-accessible) may be considered sensitive or
  vulnerable in some network environments.  It is thus important to
  control even GET access to these objects and possibly to even encrypt
  the values of these objects when sending them over the network via
  SNMP.

  These are the tables and objects and their sensitivity/vulnerability:

     Essentially, all of the objects in this MIB could be considered
     sensitive as they report on the status of the IP modules within a
     system.  However, the ipSystemStatsTable, ipIfStatsTable, and
     ipAddressTable are likely to be of most interest to an attacker.
     The statistics tables supply information about the quantity and
     type of traffic this node is processing and, especially for
     transit providers, may be considered sensitive.  The address table
     provides a convenient list of all addresses in use by this node.
     Each address in isolation is unremarkable, however, the total list
     would allow an attacker to correlate otherwise unrelated traffic.
     For example, an attacker might be able to correlate an RFC 3041
     [15] private address with known public addresses, thus
     circumventing the intentions of RFC 3041.

  SNMP versions prior to SNMPv3 did not include adequate security.
  Even if the network itself is secure (for example by using IPSec),
  even then, there is no control as to who on the secure network is
  allowed to access and GET/SET (read/change/create/delete) the objects
  in this MIB module.

  It is RECOMMENDED that implementers consider the security features as
  provided by the SNMPv3 framework (see [9], section 8), including full
  support for the SNMPv3 cryptographic mechanisms (for authentication
  and privacy).



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  Further, deployment of SNMP versions prior to SNMPv3 is NOT
  RECOMMENDED.  Instead, it is RECOMMENDED to deploy SNMPv3 and to
  enable cryptographic security.  It is then a customer/operator
  responsibility to ensure that the SNMP entity giving access to an
  instance of this MIB module, is properly configured to give access to
  the objects only to those principals (users) that have legitimate
  rights to indeed GET or SET (change/create/delete) them.

9.  Acknowledgements

  Reviews and other contributions were made by:

  Dario Acornero, Cisco Systems
  Mike MacFaden, VMWare
  Keith McCloghrie, Cisco Systems
  Juergen Schoenwalder, TU Braunschweig
  Margaret Wasserman, Devicescape

10.  Authors

  This document was written by the IPv6 MIB revision design team:

  Bill Fenner, AT&T Labs -- Research
  EMail: [email protected]

  Brian Haberman
  EMail: [email protected]

  Shawn A. Routhier
  EMail: [email protected]

  Dave Thaler, Microsoft
  EMail: [email protected]

  This document updates parts of the MIBs from several other documents.
  RFC 2011 is the previous update to the IP MIB.  RFC 2465 and RFC 2466
  are the first versions that specified IPv6 addresses and information.

  RFC 2011:
  Keith McCloghrie, Cisco Systems (Editor)

  RFC 2465 and RFC 2466:
  Dimitry Haskin, Bay Networks

  Steve Onishi, Bay Networks






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Editor's Contact Information

  Shawn A. Routhier
  Interworking Labs
  108 Whispering Pines Dr. Suite 235
  Scotts Valley, CA 95066
  USA

  EMail: [email protected]










































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Full Copyright Statement

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Acknowledgement

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