Network Working Group                                        D. McWalter
Request for Comments: 5132                           Data Connection Ltd
Obsoletes: 2932                                                D. Thaler
Category: Standards Track                          Microsoft Corporation
                                                             A. Kessler
                                                          Cisco Systems
                                                          December 2007


                           IP Multicast MIB

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.

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 objects used for managing multicast
  function, independent of the specific multicast protocol(s) in use.
  This document obsoletes RFC 2932.

Table of Contents

  1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2
    1.1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  2
  2.  History  . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
  3.  The Internet-Standard Management Framework . . . . . . . . . .  2
  4.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
  5.  IMPORTed MIB Modules and REFERENCE Clauses . . . . . . . . . .  4
  6.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .  4
  7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 54
    7.1.  SNMPv3 . . . . . . . . . . . . . . . . . . . . . . . . . . 54
    7.2.  Writeable Objects  . . . . . . . . . . . . . . . . . . . . 54
    7.3.  Readable Objects . . . . . . . . . . . . . . . . . . . . . 55
  8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 55
  9.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 55
  10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 56
    10.1. Normative References . . . . . . . . . . . . . . . . . . . 56
    10.2. Informative References . . . . . . . . . . . . . . . . . . 57






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1.  Introduction

  This MIB describes objects used for managing IP multicast function,
  including IP multicast routing.  These objects are independent of the
  specific multicast routing protocol in use.  Managed objects specific
  to particular multicast protocols are defined elsewhere.

1.1.  Terminology

  The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
  "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
  document are to be interpreted as described in [RFC2119].

2.  History

  This document obsoletes [RFC2932].  The MIB module defined by this
  document is a re-working of the MIB module from [RFC2932], with
  changes that include the following:

  o  This MIB module includes support for IPv6 addressing and the IPv6
     scoped address architecture.  [RFC2932] supported only IPv4.

  o  This MIB module allows several multicast protocols to perform
     routing on a single interface, where [RFC2932] assumed each
     interface supported at most one multicast routing protocol.
     Multicast routing protocols are now per-route, see
     ipMcastRouteProtocol.

  o  This MIB module includes objects that are not specific to
     multicast routing.  It allows management of multicast function on
     systems that do not perform routing, whereas [RFC2932] was
     restricted to multicast routing.

  o  This MIB module includes a table of Source-Specific Multicast
     (SSM) address ranges to which SSM semantics [RFC3569] should be
     applied.

  o  This MIB module includes a table of local applications that are
     receiving multicast data.

  o  This MIB module includes a table of multicast scope zones.

3.  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
  [RFC3410].




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  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,
  ([RFC2578], [RFC2579] and [RFC2580]).

4.  Overview

  This MIB module contains two scalars and eight tables.  The tables
  are:

  1.  The IP Multicast Interface Table, which contains multicast
      information specific to interfaces.

  2.  The IP Multicast SSM Range Table, which contains one row per
      range of multicast group addresses to which Source-Specific
      Multicast semantics [RFC3569] should be applied.

  3.  The IP Multicast Route Table, which contains multicast routing
      information for IP datagrams sent by particular sources to the IP
      multicast groups known to a system.

  4.  The IP Multicast Routing Next Hop Table, which contains
      information about next-hops for the routing of IP multicast
      datagrams.  Each entry is one of a list of next-hops on outgoing
      interfaces for particular sources sending to a particular
      multicast group address.

  5.  The IP Multicast Scope Boundary Table, which contains the
      boundaries configured for multicast scopes [RFC2365].

  6.  The IP Multicast Scope Name Table, which contains human-readable
      names for multicast scopes.

  7.  The IP Multicast Local Listener Table, which contains identifiers
      for local applications that are receiving multicast data.

  8.  The IP Multicast Zone Table, which contains an entry for each
      scope zone known to a system, and maps each zone to the multicast
      address range that is the corresponding scope.

  This MIB module uses textual conventions defined in the IF-MIB
  [RFC2863], the INET-ADDRESS-MIB [RFC4001] and the IANA-RTPROTO-MIB.






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5.  IMPORTed MIB Modules and REFERENCE Clauses

  The MIB modules defined in this document IMPORTs definitions
  normatively from the following MIB modules, beyond [RFC2578],
  [RFC2579], and [RFC2580]: HCNUM-TC [RFC2856], IF-MIB [RFC2863], IANA-
  RTPROTO-MIB, SNMP-FRAMEWORK-MIB [RFC3411], INET-ADDRESS-MIB
  [RFC4001], and LANGTAG-TC-MIB [RFC5131].

  This MIB module also includes REFERENCE clauses that make normative
  references to Administratively Scoped IP Multicast [RFC2365],
  Unicast-Prefix-based IPv6 Multicast Addresses [RFC3306], IPv6 Scoped
  Address Architecture [RFC4007], and IPv6 Addressing Architecture
  [RFC4291].

  Finally, this MIB module makes informative references to several RFCs
  in the text of DESCRIPTION clauses, including sysApplMIB [RFC2287],
  IP-MIB [RFC4293], Source-Specific Multicast [RFC3569], Protocol
  Independent Multicast-Sparse Mode version 2 (PIM-SMv2) Protocol
  Specification [RFC4601], Bidirectional Protocol Independent Multicast
  (BIDIR-PIM) [RFC5015], and Tags for Identifying Languages [RFC4646].

6.  Definitions

IPMCAST-MIB DEFINITIONS ::= BEGIN

IMPORTS
   MODULE-IDENTITY, OBJECT-TYPE,
   mib-2, Unsigned32, Counter64,
   Gauge32, TimeTicks              FROM SNMPv2-SMI         -- [RFC2578]
   RowStatus, TruthValue,
   StorageType, TimeStamp          FROM SNMPv2-TC          -- [RFC2579]
   MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF        -- [RFC2580]
   CounterBasedGauge64             FROM HCNUM-TC           -- [RFC2856]
   InterfaceIndexOrZero,
   InterfaceIndex                  FROM IF-MIB             -- [RFC2863]
   IANAipRouteProtocol,
   IANAipMRouteProtocol            FROM IANA-RTPROTO-MIB
   SnmpAdminString                 FROM SNMP-FRAMEWORK-MIB -- [RFC3411]
   InetAddress, InetAddressType,
   InetAddressPrefixLength,
   InetZoneIndex, InetVersion      FROM INET-ADDRESS-MIB   -- [RFC4001]
   LangTag                         FROM LANGTAG-TC-MIB;    -- [RFC5131]

ipMcastMIB MODULE-IDENTITY
   LAST-UPDATED "200711090000Z" -- 9 November 2007
   ORGANIZATION "IETF MBONE Deployment (MBONED) Working Group"
   CONTACT-INFO "David McWalter
                 Data Connection Limited



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                 100 Church Street
                 Enfield, EN2 6BQ
                 UK

                 Phone: +44 208 366 1177
                 EMail: [email protected]

                 Dave Thaler
                 Microsoft Corporation
                 One Microsoft Way
                 Redmond, WA 98052-6399
                 US

                 Phone: +1 425 703 8835
                 EMail: [email protected]

                 Andrew Kessler
                 Cisco Systems
                 425 E. Tasman Drive
                 San Jose, CA 95134
                 US

                 Phone: +1 408 526 5139
                 EMail: [email protected]"
   DESCRIPTION
           "The MIB module for management of IP Multicast, including
           multicast routing, data forwarding, and data reception.

           Copyright (C) The IETF Trust (2007).  This version of this
           MIB module is part of RFC 5132; see the RFC itself for full
           legal notices."
   REVISION     "200711090000Z" -- 9 November 2007
   DESCRIPTION  "Initial version, published as RFC 5132.

                This MIB module obsoletes IPMROUTE-STD-MIB defined by
                [RFC2932].  Changes include the following:

                o  This MIB module includes support for IPv6 addressing
                   and the IPv6 scoped address architecture.  [RFC2932]
                   supported only IPv4.

                o  This MIB module allows several multicast protocols
                   to perform routing on a single interface, where
                   [RFC2932] assumed each interface supported at most
                   one multicast routing protocol.  Multicast routing
                   protocols are now per-route, see
                   ipMcastRouteProtocol.




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                o  This MIB module includes objects that are not
                   specific to multicast routing.  It allows management
                   of multicast function on systems that do not perform
                   routing, whereas [RFC2932] was restricted to
                   multicast routing.

                o  This MIB module includes a table of Source-Specific
                   Multicast (SSM) address ranges to which SSM
                   semantics [RFC3569] should be applied.

                o  This MIB module includes a table of local
                   applications that are receiving multicast data.

                o  This MIB module includes a table of multicast scope
                   zones."
   ::= { mib-2 168 }

--
-- Top-level structure of the MIB
--

ipMcast      OBJECT IDENTIFIER ::= { ipMcastMIB 1 }

ipMcastEnabled OBJECT-TYPE
   SYNTAX     TruthValue
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
           "The enabled status of IP Multicast function on this
           system.

           The storage type of this object is determined by
           ipMcastDeviceConfigStorageType."
   ::= { ipMcast 1 }

ipMcastRouteEntryCount OBJECT-TYPE
   SYNTAX     Gauge32
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of rows in the ipMcastRouteTable.  This can be
           used to check for multicast routing activity, and to monitor
           the multicast routing table size."
   ::= { ipMcast 2 }

ipMcastDeviceConfigStorageType OBJECT-TYPE
   SYNTAX      StorageType
   MAX-ACCESS  read-write



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   STATUS      current
   DESCRIPTION
           "The storage type used for the global IP multicast
           configuration of this device, comprised of the objects
           listed below.  If this storage type takes the value
           'permanent', write-access to the listed objects need not be
           allowed.

           The objects described by this storage type are:
           ipMcastEnabled."
      DEFVAL { nonVolatile }
   ::= { ipMcast 11 }

--
--  The Multicast Interface Table
--

ipMcastInterfaceTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpMcastInterfaceEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The (conceptual) table used to manage the multicast
           protocol active on an interface."
   ::= { ipMcast 3 }

ipMcastInterfaceEntry OBJECT-TYPE
   SYNTAX     IpMcastInterfaceEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "An entry (conceptual row) containing the multicast protocol
           information for a particular interface.

           Per-interface multicast forwarding statistics are also
           available in ipIfStatsTable."
   REFERENCE "RFC 4293 ipIfStatsTable"
   INDEX      { ipMcastInterfaceIPVersion,
                ipMcastInterfaceIfIndex }
   ::= { ipMcastInterfaceTable 1 }

IpMcastInterfaceEntry ::= SEQUENCE {
   ipMcastInterfaceIPVersion         InetVersion,
   ipMcastInterfaceIfIndex           InterfaceIndex,
   ipMcastInterfaceTtl               Unsigned32,
   ipMcastInterfaceRateLimit         Unsigned32,
   ipMcastInterfaceStorageType       StorageType
}



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

ipMcastInterfaceIfIndex 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."
   ::= { ipMcastInterfaceEntry 2 }

ipMcastInterfaceTtl OBJECT-TYPE
   SYNTAX     Unsigned32 (0..256)
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
           "The datagram Time to Live (TTL) threshold for the
           interface.  Any IP multicast datagrams with a TTL (IPv4) or
           Hop Limit (IPv6) less than this threshold will not be
           forwarded out the interface.  The default value of 0 means
           all multicast packets are forwarded out the interface.  A
           value of 256 means that no multicast packets are forwarded
           out the interface."
   DEFVAL     { 0 }
   ::= { ipMcastInterfaceEntry 3 }

ipMcastInterfaceRateLimit OBJECT-TYPE
   SYNTAX     Unsigned32
   MAX-ACCESS read-write
   STATUS     current
   DESCRIPTION
           "The rate-limit, in kilobits per second, of forwarded
           multicast traffic on the interface.  A rate-limit of 0
           indicates that no rate limiting is done."
   DEFVAL     { 0 }
   ::= { ipMcastInterfaceEntry 4 }

ipMcastInterfaceStorageType OBJECT-TYPE
   SYNTAX      StorageType
   MAX-ACCESS  read-write



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   STATUS      current
   DESCRIPTION
           "The storage type for this row.  Rows having the value
           'permanent' need not allow write-access to any columnar
           objects in the row."
      DEFVAL { nonVolatile }
   ::= { ipMcastInterfaceEntry 5 }

--
-- The SSM Range Table
--

ipMcastSsmRangeTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpMcastSsmRangeEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "This table is used to create and manage the range(s) of
           group addresses to which SSM semantics should be applied."
   REFERENCE "RFC 3569"
   ::= { ipMcast 4 }

ipMcastSsmRangeEntry OBJECT-TYPE
   SYNTAX     IpMcastSsmRangeEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "An entry (conceptual row) containing a range of group
           addresses to which SSM semantics should be applied.

           Object Identifiers (OIDs) are limited to 128
           sub-identifiers, but this limit is not enforced by the
           syntax of this entry.  In practice, this does not present
           a problem, because IP address types allowed by conformance
           statements do not exceed this limit."
   REFERENCE "RFC 3569"
   INDEX      { ipMcastSsmRangeAddressType,
                ipMcastSsmRangeAddress,
                ipMcastSsmRangePrefixLength }
   ::= { ipMcastSsmRangeTable 1 }

IpMcastSsmRangeEntry ::= SEQUENCE {
   ipMcastSsmRangeAddressType   InetAddressType,
   ipMcastSsmRangeAddress       InetAddress,
   ipMcastSsmRangePrefixLength  InetAddressPrefixLength,
   ipMcastSsmRangeRowStatus     RowStatus,
   ipMcastSsmRangeStorageType   StorageType
}



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ipMcastSsmRangeAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The address type of the multicast group prefix."
   ::= { ipMcastSsmRangeEntry 1 }

ipMcastSsmRangeAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The multicast group address which, when combined with
           ipMcastSsmRangePrefixLength, gives the group prefix for this
           SSM range.  The InetAddressType is given by
           ipMcastSsmRangeAddressType.

           This address object is only significant up to
           ipMcastSsmRangePrefixLength bits.  The remaining address
           bits are set to zero.  This is especially important for this
           index field, which is part of the index of this entry.  Any
           non-zero bits would signify an entirely different entry.

           For IPv6 SSM address ranges, only ranges prefixed by
           FF3x::/16 are permitted, where 'x' is a valid IPv6 RFC 4291
           multicast address scope.  The syntax of the address range is
           given by RFC 3306, Sections 4 and 7.

           For addresses of type ipv4z or ipv6z, the appended zone
           index is significant even though it lies beyond the prefix
           length.  The use of these address types indicate that this
           SSM range entry applies only within the given zone.  Zone
           index zero is not valid in this table.

           If non-global scope SSM range entries are present, then
           consistent ipMcastBoundaryTable entries are required on
           routers at the zone boundary."
   REFERENCE "RFC 2365, RFC 4291 Section 2.7, RFC 3306 Sections 4, 6,
           and 7"
   ::= { ipMcastSsmRangeEntry 2 }

ipMcastSsmRangePrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask which, when combined with



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           ipMcastSsmRangeAddress, gives the group prefix for this SSM
           range.

           The InetAddressType is given by ipMcastSsmRangeAddressType.
           For values 'ipv4' and 'ipv4z', this object must be in the
           range 4..32.  For values 'ipv6' and 'ipv6z', this object
           must be in the range 8..128."
   REFERENCE "RFC 2365, RFC 4291 Section 2.7, RFC 3306 Sections 4, 6,
           and 7"
   ::= { ipMcastSsmRangeEntry 3 }

ipMcastSsmRangeRowStatus OBJECT-TYPE
   SYNTAX     RowStatus
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
           "The status of this row, by which rows in this table can
           be created and destroyed.

           This status object can be set to active(1) without setting
           any other columnar objects in this entry.

           All writeable objects in this entry can be modified when the
           status of this entry is active(1)."
   ::= { ipMcastSsmRangeEntry 4 }

ipMcastSsmRangeStorageType OBJECT-TYPE
   SYNTAX      StorageType
   MAX-ACCESS  read-create
   STATUS      current
   DESCRIPTION
          "The storage type for this row.  Rows having the value
          'permanent' need not allow write-access to any columnar
          objects in the row."
      DEFVAL { nonVolatile }
   ::= { ipMcastSsmRangeEntry 5 }

--
--  The IP Multicast Routing Table
--

ipMcastRouteTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpMcastRouteEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The (conceptual) table containing multicast routing
           information for IP datagrams sent by particular sources



McWalter, et al.            Standards Track                    [Page 11]

RFC 5132                      IP MCAST MIB                 December 2007


           to the IP multicast groups known to this router."
   ::= { ipMcast 5 }

ipMcastRouteEntry OBJECT-TYPE
   SYNTAX     IpMcastRouteEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "An entry (conceptual row) containing the multicast routing
           information for IP datagrams from a particular source and
           addressed to a particular IP multicast group address.

           OIDs are limited to 128 sub-identifiers, but this limit
           is not enforced by the syntax of this entry.  In practice,
           this does not present a problem, because IP address types
           allowed by conformance statements do not exceed this limit."
   INDEX      { ipMcastRouteGroupAddressType,
                ipMcastRouteGroup,
                ipMcastRouteGroupPrefixLength,
                ipMcastRouteSourceAddressType,
                ipMcastRouteSource,
                ipMcastRouteSourcePrefixLength }
   ::= { ipMcastRouteTable 1 }

IpMcastRouteEntry ::= SEQUENCE {
   ipMcastRouteGroupAddressType      InetAddressType,
   ipMcastRouteGroup                 InetAddress,
   ipMcastRouteGroupPrefixLength     InetAddressPrefixLength,
   ipMcastRouteSourceAddressType     InetAddressType,
   ipMcastRouteSource                InetAddress,
   ipMcastRouteSourcePrefixLength    InetAddressPrefixLength,
   ipMcastRouteUpstreamNeighborType  InetAddressType,
   ipMcastRouteUpstreamNeighbor      InetAddress,
   ipMcastRouteInIfIndex             InterfaceIndexOrZero,
   ipMcastRouteTimeStamp             TimeStamp,
   ipMcastRouteExpiryTime            TimeTicks,
   ipMcastRouteProtocol              IANAipMRouteProtocol,
   ipMcastRouteRtProtocol            IANAipRouteProtocol,
   ipMcastRouteRtAddressType         InetAddressType,
   ipMcastRouteRtAddress             InetAddress,
   ipMcastRouteRtPrefixLength        InetAddressPrefixLength,
   ipMcastRouteRtType                INTEGER,
   ipMcastRouteOctets                Counter64,
   ipMcastRoutePkts                  Counter64,
   ipMcastRouteTtlDropOctets         Counter64,
   ipMcastRouteTtlDropPackets        Counter64,
   ipMcastRouteDifferentInIfOctets   Counter64,
   ipMcastRouteDifferentInIfPackets  Counter64,



McWalter, et al.            Standards Track                    [Page 12]

RFC 5132                      IP MCAST MIB                 December 2007


   ipMcastRouteBps                   CounterBasedGauge64
}

ipMcastRouteGroupAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address
           contained in ipMcastRouteGroup.  Legal values correspond to
           the subset of address families for which multicast
           forwarding is supported."
   ::= { ipMcastRouteEntry 1 }

ipMcastRouteGroup OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The IP multicast group address which, when combined with
           the corresponding value specified in
           ipMcastRouteGroupPrefixLength, identifies the groups for
           which this entry contains multicast routing information.

           This address object is only significant up to
           ipMcastRouteGroupPrefixLength bits.  The remaining address
           bits are set to zero.  This is especially important for this
           index field, which is part of the index of this entry.  Any
           non-zero bits would signify an entirely different entry.

           For addresses of type ipv4z or ipv6z, the appended zone
           index is significant even though it lies beyond the prefix
           length.  The use of these address types indicate that this
           forwarding state applies only within the given zone.  Zone
           index zero is not valid in this table."
   ::= { ipMcastRouteEntry 2 }

ipMcastRouteGroupPrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask which, when combined with
           the corresponding value of ipMcastRouteGroup, identifies the
           groups for which this entry contains multicast routing
           information.

           The InetAddressType is given by



McWalter, et al.            Standards Track                    [Page 13]

RFC 5132                      IP MCAST MIB                 December 2007


           ipMcastRouteGroupAddressType.  For values 'ipv4' and
           'ipv4z', this object must be in the range 4..32.  For values
           'ipv6' and 'ipv6z', this object must be in the range
           8..128."
   ::= { ipMcastRouteEntry 3 }

ipMcastRouteSourceAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address
           contained in ipMcastRouteSource.

           A value of unknown(0) indicates a non-source-specific entry,
           corresponding to all sources in the group.  Otherwise, the
           value MUST be the same as the value of
           ipMcastRouteGroupType."
   ::= { ipMcastRouteEntry 4 }

ipMcastRouteSource OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The network address which, when combined with the
           corresponding value of ipMcastRouteSourcePrefixLength,
           identifies the sources for which this entry contains
           multicast routing information.

           This address object is only significant up to
           ipMcastRouteSourcePrefixLength bits.  The remaining address
           bits are set to zero.  This is especially important for this
           index field, which is part of the index of this entry.  Any
           non-zero bits would signify an entirely different entry.

           For addresses of type ipv4z or ipv6z, the appended zone
           index is significant even though it lies beyond the prefix
           length.  The use of these address types indicate that this
           source address applies only within the given zone.  Zone
           index zero is not valid in this table."
   ::= { ipMcastRouteEntry 5 }

ipMcastRouteSourcePrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION



McWalter, et al.            Standards Track                    [Page 14]

RFC 5132                      IP MCAST MIB                 December 2007


           "The length in bits of the mask which, when combined with
           the corresponding value of ipMcastRouteSource, identifies
           the sources for which this entry contains multicast routing
           information.

           The InetAddressType is given by
           ipMcastRouteSourceAddressType.  For the value 'unknown',
           this object must be zero.  For values 'ipv4' and 'ipv4z',
           this object must be in the range 4..32.  For values 'ipv6'
           and 'ipv6z', this object must be in the range 8..128."
   ::= { ipMcastRouteEntry 6 }

ipMcastRouteUpstreamNeighborType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address
           contained in ipMcastRouteUpstreamNeighbor.

           An address type of unknown(0) indicates that the upstream
           neighbor is unknown, for example in BIDIR-PIM."
   REFERENCE "RFC 5015"
   ::= { ipMcastRouteEntry 7 }

ipMcastRouteUpstreamNeighbor OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The address of the upstream neighbor (for example, RPF
           neighbor) from which IP datagrams from these sources to
           this multicast address are received."
   ::= { ipMcastRouteEntry 8 }

ipMcastRouteInIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndexOrZero
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The value of ifIndex for the interface on which IP
           datagrams sent by these sources to this multicast address
           are received.  A value of 0 indicates that datagrams are not
           subject to an incoming interface check, but may be accepted
           on multiple interfaces (for example, in BIDIR-PIM)."
   REFERENCE "RFC 5015"
   ::= { ipMcastRouteEntry 9 }




McWalter, et al.            Standards Track                    [Page 15]

RFC 5132                      IP MCAST MIB                 December 2007


ipMcastRouteTimeStamp OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The value of sysUpTime at which the multicast routing
           information represented by this entry was learned by the
           router.

           If this information was present at the most recent re-
           initialization of the local management subsystem, then this
           object contains a zero value."
   ::= { ipMcastRouteEntry 10 }

ipMcastRouteExpiryTime OBJECT-TYPE
   SYNTAX     TimeTicks
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The minimum amount of time remaining before this entry will
           be aged out.  The value 0 indicates that the entry is not
           subject to aging.  If ipMcastRouteNextHopState is pruned(1),
           this object represents the remaining time until the prune
           expires.  If this timer expires, state reverts to
           forwarding(2).  Otherwise, this object represents the time
           until this entry is removed from the table."
   ::= { ipMcastRouteEntry 11 }

ipMcastRouteProtocol OBJECT-TYPE
   SYNTAX     IANAipMRouteProtocol
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The multicast routing protocol via which this multicast
           forwarding entry was learned."
   ::= { ipMcastRouteEntry 12 }

ipMcastRouteRtProtocol OBJECT-TYPE
   SYNTAX     IANAipRouteProtocol
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The routing mechanism via which the route used to find the
           upstream or parent interface for this multicast forwarding
           entry was learned."
   ::= { ipMcastRouteEntry 13 }

ipMcastRouteRtAddressType OBJECT-TYPE



McWalter, et al.            Standards Track                    [Page 16]

RFC 5132                      IP MCAST MIB                 December 2007


   SYNTAX     InetAddressType
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address
           contained in ipMcastRouteRtAddress."
   ::= { ipMcastRouteEntry 14 }

ipMcastRouteRtAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The address portion of the route used to find the upstream
           or parent interface for this multicast forwarding entry.

           This address object is only significant up to
           ipMcastRouteRtPrefixLength bits.  The remaining address bits
           are set to zero.

           For addresses of type ipv4z or ipv6z, the appended zone
           index is significant even though it lies beyond the prefix
           length.  The use of these address types indicate that this
           forwarding state applies only within the given zone.  Zone
           index zero is not valid in this table."
   ::= { ipMcastRouteEntry 15 }

ipMcastRouteRtPrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask associated with the route
           used to find the upstream or parent interface for this
           multicast forwarding entry.

           The InetAddressType is given by ipMcastRouteRtAddressType.
           For values 'ipv4' and 'ipv4z', this object must be in the
           range 4..32.  For values 'ipv6' and 'ipv6z', this object
           must be in the range 8..128."
   ::= { ipMcastRouteEntry 16 }

ipMcastRouteRtType OBJECT-TYPE
   SYNTAX     INTEGER {
               unicast (1),  -- Unicast route used in multicast RIB
               multicast (2) -- Multicast route
              }
   MAX-ACCESS read-only



McWalter, et al.            Standards Track                    [Page 17]

RFC 5132                      IP MCAST MIB                 December 2007


   STATUS     current
   DESCRIPTION
           "The reason the given route was placed in the (logical)
           multicast Routing Information Base (RIB).  A value of
           unicast means that the route would normally be placed only
           in the unicast RIB, but was placed in the multicast RIB
           due (instead or in addition) to local configuration, such as
           when running PIM over RIP.  A value of multicast means that
           the route was explicitly added to the multicast RIB by the
           routing protocol, such as the Distance Vector Multicast
           Routing Protocol (DVMRP) or Multiprotocol BGP."
   ::= { ipMcastRouteEntry 17 }

ipMcastRouteOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of octets contained in IP datagrams that were
           received from these sources and addressed to this multicast
           group address, and which were forwarded by this router.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of routes being
           removed and replaced, which can be detected by observing
           the value of ipMcastRouteTimeStamp."
   ::= { ipMcastRouteEntry 18 }

ipMcastRoutePkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of packets routed using this multicast route
           entry.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of routes being
           removed and replaced, which can be detected by observing
           the value of ipMcastRouteTimeStamp."
   ::= { ipMcastRouteEntry 19 }

ipMcastRouteTtlDropOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current



McWalter, et al.            Standards Track                    [Page 18]

RFC 5132                      IP MCAST MIB                 December 2007


   DESCRIPTION
           "The number of octets contained in IP datagrams that this
           router has received from these sources and addressed to this
           multicast group address, which were dropped because the TTL
           (IPv4) or Hop Limit (IPv6) was decremented to zero, or to a
           value less than ipMcastInterfaceTtl for all next hops.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of routes being
           removed and replaced, which can be detected by observing
           the value of ipMcastRouteTimeStamp."
   ::= { ipMcastRouteEntry 20 }

ipMcastRouteTtlDropPackets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of packets that this router has received from
           these sources and addressed to this multicast group address,
           which were dropped because the TTL (IPv4) or Hop Limit
           (IPv6) was decremented to zero, or to a value less than
           ipMcastInterfaceTtl for all next hops.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of routes being
           removed and replaced, which can be detected by observing
           the value of ipMcastRouteTimeStamp."
   ::= { ipMcastRouteEntry 21 }

ipMcastRouteDifferentInIfOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of octets contained in IP datagrams that this
           router has received from these sources and addressed to this
           multicast group address, which were dropped because they
           were received on an unexpected interface.

           For RPF checking protocols (such as PIM-SM), these packets
           arrived on interfaces other than ipMcastRouteInIfIndex, and
           were dropped because of this failed RPF check.  (RPF paths
           are 'Reverse Path Forwarding' paths; the unicast routes to
           the expected origin of multicast data flows).




McWalter, et al.            Standards Track                    [Page 19]

RFC 5132                      IP MCAST MIB                 December 2007


           Other protocols may drop packets on an incoming interface
           check for different reasons (for example, BIDIR-PIM performs
           a DF check on receipt of packets).  All packets dropped as a
           result of an incoming interface check are counted here.

           If this counter increases rapidly, this indicates a problem.
           A significant quantity of multicast data is arriving at this
           router on unexpected interfaces, and is not being forwarded.

           For guidance, if the rate of increase of this counter
           exceeds 1% of the rate of increase of ipMcastRouteOctets,
           then there are multicast routing problems that require
           investigation.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of routes being
           removed and replaced, which can be detected by observing
           the value of ipMcastRouteTimeStamp."
   REFERENCE "RFC 4601 and RFC 5015"
   ::= { ipMcastRouteEntry 22 }

ipMcastRouteDifferentInIfPackets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of packets which this router has received from
           these sources and addressed to this multicast group address,
           which were dropped because they were received on an
           unexpected interface.

           For RPF checking protocols (such as PIM-SM), these packets
           arrived on interfaces other than ipMcastRouteInIfIndex, and
           were dropped because of this failed RPF check.  (RPF paths
           are 'Reverse Path Forwarding' path; the unicast routes to
           the expected origin of multicast data flows).

           Other protocols may drop packets on an incoming interface
           check for different reasons (for example, BIDIR-PIM performs
           a DF check on receipt of packets).  All packets dropped as a
           result of an incoming interface check are counted here.

           If this counter increases rapidly, this indicates a problem.
           A significant quantity of multicast data is arriving at this
           router on unexpected interfaces, and is not being forwarded.

           For guidance, if the rate of increase of this counter



McWalter, et al.            Standards Track                    [Page 20]

RFC 5132                      IP MCAST MIB                 December 2007


           exceeds 1% of the rate of increase of ipMcastRoutePkts, then
           there are multicast routing problems that require
           investigation.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of routes being
           removed and replaced, which can be detected by observing
           the value of ipMcastRouteTimeStamp."
   REFERENCE "RFC 4601 and RFC 5015"
   ::= { ipMcastRouteEntry 23 }

ipMcastRouteBps OBJECT-TYPE
   SYNTAX     CounterBasedGauge64
   UNITS      "bits per second"
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "Bits per second forwarded by this router using this
           multicast routing entry.

           This value is a sample; it is the number of bits forwarded
           during the last whole 1 second sampling period.  The value
           during the current 1 second sampling period is not made
           available until the period is completed.

           The quantity being sampled is the same as that measured by
           ipMcastRouteOctets.  The units and the sampling method are
           different."
   ::= { ipMcastRouteEntry 24 }
--
--  The IP Multicast Routing Next Hop Table
--

ipMcastRouteNextHopTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpMcastRouteNextHopEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The (conceptual) table containing information on the
           next-hops on outgoing interfaces for routing IP multicast
           datagrams.  Each entry is one of a list of next-hops on
           outgoing interfaces for particular sources sending to a
           particular multicast group address."
   ::= { ipMcast 6 }

ipMcastRouteNextHopEntry OBJECT-TYPE
   SYNTAX     IpMcastRouteNextHopEntry



McWalter, et al.            Standards Track                    [Page 21]

RFC 5132                      IP MCAST MIB                 December 2007


   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "An entry (conceptual row) in the list of next-hops on
           outgoing interfaces to which IP multicast datagrams from
           particular sources to an IP multicast group address are
           routed.

           OIDs are limited to 128 sub-identifiers, but this limit
           is not enforced by the syntax of this entry.  In practice,
           this does not present a problem, because IP address types
           allowed by conformance statements do not exceed this limit."
   INDEX      { ipMcastRouteNextHopGroupAddressType,
                ipMcastRouteNextHopGroup,
                ipMcastRouteNextHopGroupPrefixLength,
                ipMcastRouteNextHopSourceAddressType,
                ipMcastRouteNextHopSource,
                ipMcastRouteNextHopSourcePrefixLength,
                ipMcastRouteNextHopIfIndex,
                ipMcastRouteNextHopAddressType,
                ipMcastRouteNextHopAddress }
   ::= { ipMcastRouteNextHopTable 1 }

IpMcastRouteNextHopEntry ::= SEQUENCE {
   ipMcastRouteNextHopGroupAddressType    InetAddressType,
   ipMcastRouteNextHopGroup               InetAddress,
   ipMcastRouteNextHopGroupPrefixLength   InetAddressPrefixLength,
   ipMcastRouteNextHopSourceAddressType   InetAddressType,
   ipMcastRouteNextHopSource              InetAddress,
   ipMcastRouteNextHopSourcePrefixLength  InetAddressPrefixLength,
   ipMcastRouteNextHopIfIndex             InterfaceIndex,
   ipMcastRouteNextHopAddressType         InetAddressType,
   ipMcastRouteNextHopAddress             InetAddress,
   ipMcastRouteNextHopState               INTEGER,
   ipMcastRouteNextHopTimeStamp           TimeStamp,
   ipMcastRouteNextHopExpiryTime          TimeTicks,
   ipMcastRouteNextHopClosestMemberHops   Unsigned32,
   ipMcastRouteNextHopProtocol            IANAipMRouteProtocol,
   ipMcastRouteNextHopOctets              Counter64,
   ipMcastRouteNextHopPkts                Counter64
}

ipMcastRouteNextHopGroupAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address



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           contained in ipMcastRouteNextHopGroup.  Legal values
           correspond to the subset of address families for which
           multicast forwarding is supported."
   ::= { ipMcastRouteNextHopEntry 1 }

ipMcastRouteNextHopGroup OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The IP multicast group address which, when combined with
           the corresponding value specified in
           ipMcastRouteNextHopGroupPrefixLength, identifies the groups
           for which this entry contains multicast forwarding
           information.

           This address object is only significant up to
           ipMcastRouteNextHopGroupPrefixLength bits.  The remaining
           address bits are set to zero.  This is especially important
           for this index field, which is part of the index of this
           entry.  Any non-zero bits would signify an entirely
           different entry.

           For addresses of type ipv4z or ipv6z, the appended zone
           index is significant even though it lies beyond the prefix
           length.  The use of these address types indicate that this
           forwarding state applies only within the given zone.  Zone
           index zero is not valid in this table."
   ::= { ipMcastRouteNextHopEntry 2 }

ipMcastRouteNextHopGroupPrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask which, when combined with
           the corresponding value of ipMcastRouteGroup, identifies the
           groups for which this entry contains multicast routing
           information.

           The InetAddressType is given by
           ipMcastRouteNextHopGroupAddressType.  For values 'ipv4' and
           'ipv4z', this object must be in the range 4..32.  For values
           'ipv6' and 'ipv6z', this object must be in the range
           8..128."
   ::= { ipMcastRouteNextHopEntry 3 }

ipMcastRouteNextHopSourceAddressType OBJECT-TYPE



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   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address
           contained in ipMcastRouteNextHopSource.

           A value of unknown(0) indicates a non-source-specific entry,
           corresponding to all sources in the group.  Otherwise, the
           value MUST be the same as the value of
           ipMcastRouteNextHopGroupType."
   ::= { ipMcastRouteNextHopEntry 4 }

ipMcastRouteNextHopSource OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The network address which, when combined with the
           corresponding value of the mask specified in
           ipMcastRouteNextHopSourcePrefixLength, identifies the
           sources for which this entry specifies a next-hop on an
           outgoing interface.

           This address object is only significant up to
           ipMcastRouteNextHopSourcePrefixLength bits.  The remaining
           address bits are set to zero.  This is especially important
           for this index field, which is part of the index of this
           entry.  Any non-zero bits would signify an entirely
           different entry.

           For addresses of type ipv4z or ipv6z, the appended zone
           index is significant even though it lies beyond the prefix
           length.  The use of these address types indicate that this
           source address applies only within the given zone.  Zone
           index zero is not valid in this table."
   ::= { ipMcastRouteNextHopEntry 5 }

ipMcastRouteNextHopSourcePrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask which, when combined with
           the corresponding value specified in
           ipMcastRouteNextHopSource, identifies the sources for which
           this entry specifies a next-hop on an outgoing interface.




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           The InetAddressType is given by
           ipMcastRouteNextHopSourceAddressType.  For the value
           'unknown', this object must be zero.  For values 'ipv4' and
           'ipv4z', this object must be in the range 4..32.  For values
           'ipv6' and 'ipv6z', this object must be in the range
           8..128."
   ::= { ipMcastRouteNextHopEntry 6 }

ipMcastRouteNextHopIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The ifIndex value of the interface for the outgoing
           interface for this next-hop."
   ::= { ipMcastRouteNextHopEntry 7 }

ipMcastRouteNextHopAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address
           contained in ipMcastRouteNextHopAddress."
   ::= { ipMcastRouteNextHopEntry 8 }

ipMcastRouteNextHopAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The address of the next-hop specific to this entry.  For
           most interfaces, this is identical to
           ipMcastRouteNextHopGroup.  Non-Broadcast Multi-Access
           (NBMA) interfaces, however, may
           have multiple next-hop addresses out a single outgoing
           interface."
   ::= { ipMcastRouteNextHopEntry 9 }

ipMcastRouteNextHopState OBJECT-TYPE
   SYNTAX     INTEGER { pruned(1), forwarding(2) }
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "An indication of whether the outgoing interface and next-
           hop represented by this entry is currently being used to
           forward IP datagrams.  The value 'forwarding' indicates it
           is currently being used; the value 'pruned' indicates it is



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           not."
   ::= { ipMcastRouteNextHopEntry 10 }

ipMcastRouteNextHopTimeStamp OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The value of sysUpTime at which the multicast routing
           information represented by this entry was learned by the
           router.

           If this information was present at the most recent re-
           initialization of the local management subsystem, then this
           object contains a zero value."
   ::= { ipMcastRouteNextHopEntry 11 }

ipMcastRouteNextHopExpiryTime OBJECT-TYPE
   SYNTAX     TimeTicks
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The minimum amount of time remaining before this entry will
           be aged out.  If ipMcastRouteNextHopState is pruned(1), the
           remaining time until the prune expires and the state reverts
           to forwarding(2).  Otherwise, the remaining time until this
           entry is removed from the table.  The time remaining may be
           copied from ipMcastRouteExpiryTime if the protocol in use
           for this entry does not specify next-hop timers.  The value
           0 indicates that the entry is not subject to aging."
   ::= { ipMcastRouteNextHopEntry 12 }

ipMcastRouteNextHopClosestMemberHops OBJECT-TYPE
   SYNTAX     Unsigned32 (0..256)
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The minimum number of hops between this router and any
           member of this IP multicast group reached via this next-hop
           on this outgoing interface.  Any IP multicast datagrams for
           the group that have a TTL (IPv4) or Hop Count (IPv6) less
           than this number of hops will not be forwarded to this
           next-hop.

           A value of 0 means all multicast datagrams are forwarded out
           the interface.  A value of 256 means that no multicast
           datagrams are forwarded out the interface.




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           This is an optimization applied by multicast routing
           protocols that explicitly track hop counts to downstream
           listeners.  Multicast protocols that are not aware of hop
           counts to downstream listeners set this object to 0."
   ::= { ipMcastRouteNextHopEntry 13 }

ipMcastRouteNextHopProtocol OBJECT-TYPE
   SYNTAX     IANAipMRouteProtocol
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The routing mechanism via which this next-hop was learned."
   ::= { ipMcastRouteNextHopEntry 14 }

ipMcastRouteNextHopOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of octets of multicast packets that have been
           forwarded using this route.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of routes being
           removed and replaced, which can be detected by observing
           the value of ipMcastRouteNextHopTimeStamp."
   ::= { ipMcastRouteNextHopEntry 15 }

ipMcastRouteNextHopPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of packets which have been forwarded using this
           route.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of routes being
           removed and replaced, which can be detected by observing
           the value of ipMcastRouteNextHopTimeStamp."
   ::= { ipMcastRouteNextHopEntry 16 }

--
--  The IP Multicast Scope Boundary Table
--




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RFC 5132                      IP MCAST MIB                 December 2007


ipMcastBoundaryTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpMcastBoundaryEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The (conceptual) table listing the system's multicast scope
           zone boundaries."
   REFERENCE "RFC 4007 Section 5"
   ::= { ipMcast 7 }

ipMcastBoundaryEntry OBJECT-TYPE
   SYNTAX     IpMcastBoundaryEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "An entry (conceptual row) describing one of this device's
           multicast scope zone boundaries.

           OIDs are limited to 128 sub-identifiers, but this limit
           is not enforced by the syntax of this entry.  In practice,
           this does not present a problem, because IP address types
           allowed by conformance statements do not exceed this limit."
   REFERENCE "RFC 2365 Section 5, RFC 4007 Section 5"
   INDEX      { ipMcastBoundaryIfIndex,
                ipMcastBoundaryAddressType,
                ipMcastBoundaryAddress,
                ipMcastBoundaryAddressPrefixLength }
   ::= { ipMcastBoundaryTable 1 }

IpMcastBoundaryEntry ::= SEQUENCE {
   ipMcastBoundaryIfIndex              InterfaceIndex,
   ipMcastBoundaryAddressType          InetAddressType,
   ipMcastBoundaryAddress              InetAddress,
   ipMcastBoundaryAddressPrefixLength  InetAddressPrefixLength,
   ipMcastBoundaryTimeStamp            TimeStamp,
   ipMcastBoundaryDroppedMcastOctets   Counter64,
   ipMcastBoundaryDroppedMcastPkts     Counter64,
   ipMcastBoundaryStatus               RowStatus,
   ipMcastBoundaryStorageType          StorageType
}

ipMcastBoundaryIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The IfIndex value for the interface to which this boundary
           applies.  Packets with a destination address in the



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           associated address/mask range will not be forwarded over
           this interface.

           For IPv4, zone boundaries cut through links.  Therefore,
           this is an external interface.  This may be either a
           physical or virtual interface (tunnel, encapsulation, and
           so forth.)

           For IPv6, zone boundaries cut through nodes.  Therefore,
           this is a virtual interface within the node.  This is not
           an external interface, either real or virtual.  Packets
           crossing this interface neither arrive at nor leave the
           node, but only move between zones within the node."
   REFERENCE "RFC 2365 Section 5, RFC 4007 Section 5"
   ::= { ipMcastBoundaryEntry 1 }

ipMcastBoundaryAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address
           contained in ipMcastBoundaryAddress.  Legal values
           correspond to the subset of address families for which
           multicast forwarding is supported."
   ::= { ipMcastBoundaryEntry 2 }

ipMcastBoundaryAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The group address which, when combined with the
           corresponding value of ipMcastBoundaryAddressPrefixLength,
           identifies the group range for which the scoped boundary
           exists.  Scoped IPv4 multicast address ranges must be
           prefixed by 239.0.0.0/8.  Scoped IPv6 multicast address
           ranges are FF0x::/16, where x is a valid RFC 4291 multicast
           scope.

           An IPv6 address prefixed by FF1x::/16 is a non-permanently-
           assigned address.  An IPv6 address prefixed by FF3x::/16 is
           a unicast-prefix-based multicast addresses.  A zone boundary
           for FF0x::/16 implies an identical boundary for these other
           prefixes.  No separate FF1x::/16 or FF3x::/16 entries exist
           in this table.

           This address object is only significant up to



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           ipMcastBoundaryAddressPrefixLength bits.  The remaining
           address bits are set to zero.  This is especially important
           for this index field, which is part of the index of this
           entry.  Any non-zero bits would signify an entirely
           different entry."
   ::= { ipMcastBoundaryEntry 3 }

ipMcastBoundaryAddressPrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask which when, combined with
           the corresponding value of ipMcastBoundaryAddress,
           identifies the group range for which the scoped boundary
           exists.

           The InetAddressType is given by ipMcastBoundaryAddressType.
           For values 'ipv4' and 'ipv4z', this object must be in the
           range 4..32.  For values 'ipv6' and 'ipv6z', this object
           must be set to 16."
   ::= { ipMcastBoundaryEntry 4 }

ipMcastBoundaryTimeStamp OBJECT-TYPE
   SYNTAX     TimeStamp
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The value of sysUpTime at which the multicast boundary
           information represented by this entry was learned by the
           router.

           If this information was present at the most recent re-
           initialization of the local management subsystem, then this
           object contains a zero value."
   ::= { ipMcastBoundaryEntry 5 }

ipMcastBoundaryDroppedMcastOctets OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of octets of multicast packets that have been
           dropped as a result of this zone boundary configuration.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of boundary



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           configuration being removed and replaced, which can be
           detected by observing the value of
           ipMcastBoundaryTimeStamp."
   ::= { ipMcastBoundaryEntry 6 }

ipMcastBoundaryDroppedMcastPkts OBJECT-TYPE
   SYNTAX     Counter64
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The number of multicast packets that have been dropped as a
           result of this zone boundary configuration.

           Discontinuities in this monotonically increasing value
           occur at re-initialization of the management system.
           Discontinuities can also occur as a result of boundary
           configuration being removed and replaced, which can be
           detected by observing the value of
           ipMcastBoundaryTimeStamp."
   ::= { ipMcastBoundaryEntry 7 }

ipMcastBoundaryStatus OBJECT-TYPE
   SYNTAX     RowStatus
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
           "The status of this row, by which rows in this table can
           be created and destroyed.

           This status object can be set to active(1) without setting
           any other columnar objects in this entry.

           All writeable objects in this entry can be modified when the
           status of this entry is active(1)."
   ::= { ipMcastBoundaryEntry 8 }

ipMcastBoundaryStorageType OBJECT-TYPE
   SYNTAX      StorageType
   MAX-ACCESS  read-create
   STATUS      current
   DESCRIPTION
          "The storage type for this row.  Rows having the value
          'permanent' need not allow write-access to any columnar
          objects in the row."
      DEFVAL { nonVolatile }
   ::= { ipMcastBoundaryEntry 9 }

--



McWalter, et al.            Standards Track                    [Page 31]

RFC 5132                      IP MCAST MIB                 December 2007


--  The IP Multicast Scope Name Table
--

ipMcastScopeNameTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpMcastScopeNameEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The (conceptual) table listing multicast scope names."
   REFERENCE "RFC 4007 Section 4"
   ::= { ipMcast 8 }

ipMcastScopeNameEntry OBJECT-TYPE
   SYNTAX     IpMcastScopeNameEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "An entry (conceptual row) that names a multicast address
           scope.

           OIDs are limited to 128 sub-identifiers, but this limit
           is not enforced by the syntax of this entry.  In practice,
           this does not present a problem, because IP address types
           allowed by conformance statements do not exceed this limit."
   REFERENCE "RFC 4007 Section 4"
   INDEX      { ipMcastScopeNameAddressType,
                ipMcastScopeNameAddress,
                ipMcastScopeNameAddressPrefixLength,
                ipMcastScopeNameLanguage }
   ::= { ipMcastScopeNameTable 1 }

IpMcastScopeNameEntry ::= SEQUENCE {
   ipMcastScopeNameAddressType          InetAddressType,
   ipMcastScopeNameAddress              InetAddress,
   ipMcastScopeNameAddressPrefixLength  InetAddressPrefixLength,
   ipMcastScopeNameLanguage             LangTag,
   ipMcastScopeNameString               SnmpAdminString,
   ipMcastScopeNameDefault              TruthValue,
   ipMcastScopeNameStatus               RowStatus,
   ipMcastScopeNameStorageType          StorageType
}

ipMcastScopeNameAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address



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           contained in ipMcastScopeNameAddress.  Legal values
           correspond to the subset of address families for which
           multicast forwarding is supported."
   ::= { ipMcastScopeNameEntry 1 }

ipMcastScopeNameAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The group address which, when combined with the
           corresponding value of ipMcastScopeNameAddressPrefixLength,
           identifies the group range associated with the multicast
           scope.  Scoped IPv4 multicast address ranges must be
           prefixed by 239.0.0.0/8.  Scoped IPv6 multicast address
           ranges are FF0x::/16, where x is a valid RFC 4291 multicast
           scope.

           An IPv6 address prefixed by FF1x::/16 is a non-permanently-
           assigned address.  An IPv6 address prefixed by FF3x::/16 is
           a unicast-prefix-based multicast addresses.  A scope
           FF0x::/16 implies an identical scope name for these other
           prefixes.  No separate FF1x::/16 or FF3x::/16 entries exist
           in this table.

           This address object is only significant up to
           ipMcastScopeNameAddressPrefixLength bits.  The remaining
           address bits are set to zero.  This is especially important
           for this index field, which is part of the index of this
           entry.  Any non-zero bits would signify an entirely
           different entry."
   ::= { ipMcastScopeNameEntry 2 }

ipMcastScopeNameAddressPrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask which, when combined with
           the corresponding value of ipMcastScopeNameAddress,
           identifies the group range associated with the multicast
           scope.

           The InetAddressType is given by ipMcastScopeNameAddressType.
           For values 'ipv4' and 'ipv4z', this object must be in the
           range 4..32.  For values 'ipv6' and 'ipv6z', this object
           must be set to 16."
   ::= { ipMcastScopeNameEntry 3 }



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ipMcastScopeNameLanguage OBJECT-TYPE
   SYNTAX     LangTag
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "Language tag associated with the scope name."
   REFERENCE "RFC 4646"
   ::= { ipMcastScopeNameEntry 4 }

ipMcastScopeNameString OBJECT-TYPE
   SYNTAX     SnmpAdminString
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
           "The textual name associated with the multicast scope.  The
           value of this object should be suitable for displaying to
           end-users, such as when allocating a multicast address in
           this scope.

           When no name is specified, the default value of this object
           for IPv4 should be the string 239.x.x.x/y with x and y
           replaced with decimal values to describe the address and
           mask length associated with the scope.

           When no name is specified, the default value of this object
           for IPv6 should be the string FF0x::/16, with x replaced by
           the hexadecimal value for the RFC 4291 multicast scope.

           An IPv6 address prefixed by FF1x::/16 is a non-permanently-
           assigned address.  An IPv6 address prefixed by FF3x::/16 is
           a unicast-prefix-based multicast addresses.  A scope
           FF0x::/16 implies an identical scope name for these other
           prefixes.  No separate FF1x::/16 or FF3x::/16 entries exist
           in this table."
   REFERENCE "RFC 2365, RFC 3306 Section 4, RFC 4291 Section 2.7"
   ::= { ipMcastScopeNameEntry 5 }

ipMcastScopeNameDefault OBJECT-TYPE
   SYNTAX     TruthValue
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
           "If true, indicates a preference that the name in the
           following language should be used by applications if no name
           is available in a desired language."
   DEFVAL { false }
   ::= { ipMcastScopeNameEntry 6 }




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ipMcastScopeNameStatus OBJECT-TYPE
   SYNTAX     RowStatus
   MAX-ACCESS read-create
   STATUS     current
   DESCRIPTION
           "The status of this row, by which rows in this table can
           be created and destroyed.  Before the row can be activated,
           the object ipMcastScopeNameString must be set to a valid
           value.  All writeable objects in this entry can be modified
           when the status is active(1)."
   ::= { ipMcastScopeNameEntry 7 }

ipMcastScopeNameStorageType OBJECT-TYPE
   SYNTAX      StorageType
   MAX-ACCESS  read-create
   STATUS      current
   DESCRIPTION
          "The storage type for this row.  Rows having the value
          'permanent' need not allow write-access to any columnar
          objects in the row."
      DEFVAL { nonVolatile }
   ::= { ipMcastScopeNameEntry 8 }

--
--  The Multicast Listeners Table
--

ipMcastLocalListenerTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpMcastLocalListenerEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The (conceptual) table listing local applications or
           services that have joined multicast groups as listeners.

           Entries exist for all addresses in the multicast range for
           all applications and services as they are classified on this
           device."
   ::= { ipMcast 9 }

ipMcastLocalListenerEntry OBJECT-TYPE
   SYNTAX     IpMcastLocalListenerEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "An entry (conceptual row) identifying a local application
           or service that has joined a multicast group as a listener.




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           OIDs are limited to 128 sub-identifiers, but this limit
           is not enforced by the syntax of this entry.  In practice,
           this does not present a problem, because IP address types
           allowed by conformance statements do not exceed this limit."
   INDEX      { ipMcastLocalListenerGroupAddressType,
                ipMcastLocalListenerGroupAddress,
                ipMcastLocalListenerSourceAddressType,
                ipMcastLocalListenerSourceAddress,
                ipMcastLocalListenerSourcePrefixLength,
                ipMcastLocalListenerIfIndex,
                ipMcastLocalListenerRunIndex }
   ::= { ipMcastLocalListenerTable 1 }

IpMcastLocalListenerEntry ::= SEQUENCE {
   ipMcastLocalListenerGroupAddressType    InetAddressType,
   ipMcastLocalListenerGroupAddress        InetAddress,
   ipMcastLocalListenerSourceAddressType   InetAddressType,
   ipMcastLocalListenerSourceAddress       InetAddress,
   ipMcastLocalListenerSourcePrefixLength  InetAddressPrefixLength,
   ipMcastLocalListenerIfIndex             InterfaceIndex,
   ipMcastLocalListenerRunIndex            Unsigned32
}

ipMcastLocalListenerGroupAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "A value indicating the address family of the address
           contained in ipMcastLocalListenerGroupAddress.  Legal values
           correspond to the subset of address families for which
           multicast is supported."
   ::= { ipMcastLocalListenerEntry 1 }

ipMcastLocalListenerGroupAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The IP multicast group for which this entry specifies
           locally joined applications or services."
   ::= { ipMcastLocalListenerEntry 2 }

ipMcastLocalListenerSourceAddressType OBJECT-TYPE
   SYNTAX     InetAddressType
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION



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           "A value indicating the address family of the address
           contained in ipMcastLocalListenerSource.

           A value of unknown(0) indicates a non-source-specific entry,
           corresponding to all sources in the group.  Otherwise, the
           value MUST be the same as the value of
           ipMcastLocalListenerGroupAddressType."
   ::= { ipMcastLocalListenerEntry 3 }

ipMcastLocalListenerSourceAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The network address which, when combined with the
           corresponding value of the mask specified in
           ipMcastLocalListenerSourcePrefixLength, identifies the
           sources for which this entry specifies a local listener.

           This address object is only significant up to
           ipMcastLocalListenerSourcePrefixLength bits.  The remaining
           address bits are set to zero.  This is especially important
           for this index field, which is part of the index of this
           entry.  Any non-zero bits would signify an entirely
           different entry.

           For addresses of type ipv4z or ipv6z, the appended zone
           index is significant even though it lies beyond the prefix
           length.  The use of these address types indicate that this
           listener address applies only within the given zone.  Zone
           index zero is not valid in this table."
   ::= { ipMcastLocalListenerEntry 4 }

ipMcastLocalListenerSourcePrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask which, when combined with
           the corresponding value specified in
           ipMcastLocalListenerSource, identifies the sources for which
           this entry specifies a local listener.

           The InetAddressType is given by
           ipMcastLocalListenerSourceAddressType.  For the value
           'unknown', this object must be zero.  For values 'ipv4' and
           'ipv4z', this object must be in the range 4..32.  For values
           'ipv6' and 'ipv6z', this object must be in the range



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           8..128."
   ::= { ipMcastLocalListenerEntry 5 }

ipMcastLocalListenerIfIndex OBJECT-TYPE
   SYNTAX     InterfaceIndex
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The IfIndex value of the interface for which this entry
           specifies a local listener."
   ::= { ipMcastLocalListenerEntry 6 }

ipMcastLocalListenerRunIndex OBJECT-TYPE
   SYNTAX     Unsigned32 (0..2147483647)
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "A unique value corresponding to a piece of software running
           on this router or host system.  Where possible, this should
           be the system's native, unique identification number.

           This identifier is platform-specific.  It may correspond to
           a process ID or application instance number.

           A value of zero indicates that the application instance(s)
           cannot be identified.  A value of zero indicates that one or
           more unidentified applications have joined the specified
           multicast groups (for the specified sources) as listeners."
   REFERENCE "RFC 2287 sysApplRunIndex"
   ::= { ipMcastLocalListenerEntry 7 }

--
--  The Multicast Zone Table
--

ipMcastZoneTable OBJECT-TYPE
   SYNTAX     SEQUENCE OF IpMcastZoneEntry
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "The (conceptual) table listing scope zones on this device."
   REFERENCE "RFC 4007 Section 5"
   ::= { ipMcast 10 }

ipMcastZoneEntry OBJECT-TYPE
   SYNTAX     IpMcastZoneEntry
   MAX-ACCESS not-accessible
   STATUS     current



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   DESCRIPTION
           "An entry (conceptual row) describing a scope zone on this
           device."
   REFERENCE "RFC 4007 Section 5"
   INDEX      { ipMcastZoneIndex }
   ::= { ipMcastZoneTable 1 }

IpMcastZoneEntry ::= SEQUENCE {
   ipMcastZoneIndex                        InetZoneIndex,
   ipMcastZoneScopeDefaultZoneIndex        InetZoneIndex,
   ipMcastZoneScopeAddressType             InetAddressType,
   ipMcastZoneScopeAddress                 InetAddress,
   ipMcastZoneScopeAddressPrefixLength     InetAddressPrefixLength
}

ipMcastZoneIndex OBJECT-TYPE
   SYNTAX     InetZoneIndex (1..4294967295)
   MAX-ACCESS not-accessible
   STATUS     current
   DESCRIPTION
           "This zone index uniquely identifies a zone on a device.

           Each zone is for a given scope.  Scope-level information in
           this table is for the unique scope that corresponds to this
           zone.

           Zero is a special value used to request the default zone for
           a given scope.  Zero is not a valid value for this object.

           To test whether ipMcastZoneIndex is the default zone for
           this scope, test whether ipMcastZoneIndex is equal to
           ipMcastZoneScopeDefaultZoneIndex."
   ::= { ipMcastZoneEntry 1 }

ipMcastZoneScopeDefaultZoneIndex OBJECT-TYPE
   SYNTAX     InetZoneIndex (1..4294967295)
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The default zone index for this scope.  This is the zone
           that this device will use if the default (zero) zone is
           requested for this scope.

           Zero is not a valid value for this object."
   ::= { ipMcastZoneEntry 2 }

ipMcastZoneScopeAddressType OBJECT-TYPE
   SYNTAX     InetAddressType



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   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The IP address type for which this scope zone exists."
   ::= { ipMcastZoneEntry 3 }

ipMcastZoneScopeAddress OBJECT-TYPE
   SYNTAX     InetAddress
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The multicast group address which, when combined with
           ipMcastZoneScopeAddressPrefixLength, gives the multicast
           address range for this scope.  The InetAddressType is given
           by ipMcastZoneScopeAddressType.

           Scoped IPv4 multicast address ranges are prefixed by
           239.0.0.0/8.  Scoped IPv6 multicast address ranges are
           FF0x::/16, where x is a valid RFC 4291 multicast scope.

           An IPv6 address prefixed by FF1x::/16 is a non-permanently-
           assigned address.  An IPv6 address prefixed by FF3x::/16 is
           a unicast-prefix-based multicast addresses.  A scope
           FF0x::/16 implies an identical scope for these other
           prefixes.  No separate FF1x::/16 or FF3x::/16 entries exist
           in this table.

           This address object is only significant up to
           ipMcastZoneScopeAddressPrefixLength bits.  The remaining
           address bits are set to zero."
   REFERENCE "RFC 2365, RFC 3306 Section 4, RFC 4291 Section 2.7"
   ::= { ipMcastZoneEntry 4 }

ipMcastZoneScopeAddressPrefixLength OBJECT-TYPE
   SYNTAX     InetAddressPrefixLength
   MAX-ACCESS read-only
   STATUS     current
   DESCRIPTION
           "The length in bits of the mask which, when combined
           with ipMcastZoneScopeAddress, gives the multicast address
           prefix for this scope.

           The InetAddressType is given by ipMcastZoneScopeAddressType.
           For values 'ipv4' and 'ipv4z', this object must be in the
           range 4..32.  For values 'ipv6' and 'ipv6z', this object
           must be set to 16."
   ::= { ipMcastZoneEntry 5 }




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RFC 5132                      IP MCAST MIB                 December 2007


--
-- Conformance information
--

ipMcastMIBConformance
                 OBJECT IDENTIFIER ::= { ipMcastMIB 2 }
ipMcastMIBCompliances
                 OBJECT IDENTIFIER ::= { ipMcastMIBConformance 1 }
ipMcastMIBGroups  OBJECT IDENTIFIER ::= { ipMcastMIBConformance 2 }

--
-- Compliance statements
--

ipMcastMIBComplianceHost MODULE-COMPLIANCE
   STATUS  current
   DESCRIPTION
           "The compliance statement for hosts supporting IPMCAST-MIB.

           Support for either InetAddressType ipv4 or ipv6 is
           mandatory; support for both InetAddressTypes ipv4 and ipv6
           is optional.  Support for types ipv4z and ipv6z is
           optional.

           -- OBJECT     ipMcastLocalListenerGroupAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastLocalListenerGroupAddress
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastLocalListenerSourceAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastLocalListenerSourceAddress
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6."

   MODULE  -- this module
   MANDATORY-GROUPS { ipMcastMIBLocalListenerGroup,



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RFC 5132                      IP MCAST MIB                 December 2007


                      ipMcastMIBBasicGroup }

     OBJECT     ipMcastEnabled
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastDeviceConfigStorageType
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     GROUP        ipMcastMIBSsmGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBRouteGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBRouteDiagnosticsGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBBoundaryIfGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBScopeNameGroup
     DESCRIPTION
         "This group is optional."

   ::= { ipMcastMIBCompliances 1 }

ipMcastMIBComplianceRouter MODULE-COMPLIANCE
   STATUS  current
   DESCRIPTION
           "The compliance statement for routers supporting
           IPMCAST-MIB.

           Support for either InetAddressType ipv4 or ipv6 is
           mandatory; support for both InetAddressTypes ipv4 and ipv6
           is optional.  Support for types ipv4z and ipv6z is
           optional.

           -- OBJECT     ipMcastSsmRangeAddressType
           -- SYNTAX     InetAddressType {ipv4(1), ipv6(2), ipv4z(3),
           --                             ipv6z(4)}



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           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastSsmRangeAddress
           -- SYNTAX     InetAddress (SIZE (4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteGroupAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteGroup
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteSourceAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteSource
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteNextHopGroupAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteNextHopGroup
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteNextHopSourceAddressType



McWalter, et al.            Standards Track                    [Page 43]

RFC 5132                      IP MCAST MIB                 December 2007


           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                              ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteNextHopSource
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteNextHopAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteNextHopAddress
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6."

   MODULE  -- this module
   MANDATORY-GROUPS { ipMcastMIBRouteProtoGroup,
                      ipMcastMIBBasicGroup,
                      ipMcastMIBSsmGroup,
                      ipMcastMIBRouteGroup }

     OBJECT     ipMcastEnabled
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastDeviceConfigStorageType
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastInterfaceTtl
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastInterfaceRateLimit
     MIN-ACCESS read-only



McWalter, et al.            Standards Track                    [Page 44]

RFC 5132                      IP MCAST MIB                 December 2007


     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastInterfaceStorageType
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastRouteUpstreamNeighborType
     SYNTAX     InetAddressType { unknown(0), ipv4(1), ipv6(2),
                                  ipv4z(3), ipv6z(4) }
     DESCRIPTION
         "This compliance requires support for unknown and either ipv4
         or ipv6."

     OBJECT     ipMcastRouteUpstreamNeighbor
     SYNTAX     InetAddress (SIZE (0|4|8|16|20))
     DESCRIPTION
         "This compliance requires support for unknown and either ipv4
         or ipv6."

     OBJECT     ipMcastRouteRtAddressType
     SYNTAX     InetAddressType { unknown(0), ipv4(1), ipv6(2),
                                  ipv4z(3), ipv6z(4) }
     DESCRIPTION
         "This compliance requires support for unknown and either ipv4
         or ipv6."

     OBJECT     ipMcastRouteRtAddress
     SYNTAX     InetAddress (SIZE (0|4|8|16|20))
     DESCRIPTION
         "This compliance requires support for unknown and either ipv4
         or ipv6."

     OBJECT     ipMcastSsmRangeRowStatus
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastSsmRangeStorageType
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     GROUP        ipMcastMIBRouteDiagnosticsGroup
     DESCRIPTION
         "This group is not mandatory, but SHOULD be supported where
         hardware permits."



McWalter, et al.            Standards Track                    [Page 45]

RFC 5132                      IP MCAST MIB                 December 2007


     GROUP        ipMcastMIBPktsOutGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBHopCountGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBRouteOctetsGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBRouteBpsGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBLocalListenerGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBBoundaryIfGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBScopeNameGroup
     DESCRIPTION
         "This group is optional."

   ::= { ipMcastMIBCompliances 2 }

ipMcastMIBComplianceBorderRouter MODULE-COMPLIANCE
   STATUS  current
   DESCRIPTION
           "The compliance statement for routers on scope
           boundaries supporting IPMCAST-MIB.

           Support for either InetAddressType ipv4z or ipv6z is
           mandatory; support for both InetAddressTypes ipv4z and
           ipv6z is optional.

           -- OBJECT     ipMcastSsmRangeAddressType
           -- SYNTAX     InetAddressType {ipv4(1), ipv6(2), ipv4z(3),
           --                             ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastSsmRangeAddress
           -- SYNTAX     InetAddress (SIZE (4|8|16|20))



McWalter, et al.            Standards Track                    [Page 46]

RFC 5132                      IP MCAST MIB                 December 2007


           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteGroupAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 or ipv6.
           --
           -- OBJECT     ipMcastRouteGroup
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.
           --
           -- OBJECT     ipMcastRouteSourceAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.
           --
           -- OBJECT     ipMcastRouteSource
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.
           --
           -- OBJECT     ipMcastRouteNextHopGroupAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.
           --
           -- OBJECT     ipMcastRouteNextHopGroup
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.
           --
           -- OBJECT     ipMcastRouteNextHopSourceAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.



McWalter, et al.            Standards Track                    [Page 47]

RFC 5132                      IP MCAST MIB                 December 2007


           --
           -- OBJECT     ipMcastRouteNextHopSource
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.
           --
           -- OBJECT     ipMcastRouteNextHopAddressType
           -- SYNTAX     InetAddressType {unknown(0), ipv4(1), ipv6(2),
           --                             ipv4z(3), ipv6z(4)}
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.
           --
           -- OBJECT     ipMcastRouteNextHopAddress
           -- SYNTAX     InetAddress (SIZE (0|4|8|16|20))
           -- DESCRIPTION
           --     This compliance requires support for unknown and
           --     either ipv4 and ipv4z or ipv6 and ipv6z.
           --
           -- OBJECT     ipMcastBoundaryAddressType
           -- SYNTAX     InetAddressType {ipv4(1), ipv6(2)}
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastBoundaryAddress
           -- SYNTAX     InetAddress (SIZE (4|16)
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastScopeNameAddressType
           -- SYNTAX     InetAddressType {ipv4(1), ipv6(2)}
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6.
           --
           -- OBJECT     ipMcastScopeNameAddress
           -- SYNTAX     InetAddress (SIZE (4|16)
           -- DESCRIPTION
           --     This compliance requires support for ipv4 or ipv6."

   MODULE  -- this module
   MANDATORY-GROUPS { ipMcastMIBRouteProtoGroup,
                      ipMcastMIBBasicGroup,
                      ipMcastMIBSsmGroup,
                      ipMcastMIBRouteGroup,
                      ipMcastMIBBoundaryIfGroup,
                      ipMcastMIBScopeNameGroup }




McWalter, et al.            Standards Track                    [Page 48]

RFC 5132                      IP MCAST MIB                 December 2007


     OBJECT     ipMcastEnabled
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastDeviceConfigStorageType
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastInterfaceTtl
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastInterfaceRateLimit
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastInterfaceStorageType
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastRouteUpstreamNeighborType
     SYNTAX     InetAddressType { unknown(0), ipv4(1), ipv6(2),
                                  ipv4z(3), ipv6z(4) }
     DESCRIPTION
         "This compliance requires support for unknown and either ipv4
         and ipv4z, or ipv6 and ipv6z."

     OBJECT     ipMcastRouteUpstreamNeighbor
     SYNTAX     InetAddress (SIZE (0|4|8|16|20))
     DESCRIPTION
         "This compliance requires support for unknown and either ipv4
         and ipv4z, or ipv6 and ipv6z."

     OBJECT     ipMcastRouteRtAddressType
     SYNTAX     InetAddressType { unknown(0), ipv4(1), ipv6(2),
                                  ipv4z(3), ipv6z(4) }
     DESCRIPTION
         "This compliance requires support for unknown and either ipv4
         and ipv4z, or ipv6 and ipv6z."

     OBJECT     ipMcastRouteRtAddress
     SYNTAX     InetAddress (SIZE (0|4|8|16|20))
     DESCRIPTION



McWalter, et al.            Standards Track                    [Page 49]

RFC 5132                      IP MCAST MIB                 December 2007


         "This compliance requires support for unknown and either ipv4
         and ipv4z, or ipv6 and ipv6z."

     OBJECT     ipMcastSsmRangeRowStatus
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     OBJECT     ipMcastSsmRangeStorageType
     MIN-ACCESS read-only
     DESCRIPTION
         "Write access is not required."

     GROUP        ipMcastMIBRouteDiagnosticsGroup
     DESCRIPTION
         "This group is not mandatory, but SHOULD be supported where
         hardware permits."

     GROUP        ipMcastMIBPktsOutGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBHopCountGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBRouteOctetsGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBRouteBpsGroup
     DESCRIPTION
         "This group is optional."

     GROUP        ipMcastMIBLocalListenerGroup
     DESCRIPTION
         "This group is optional."

     OBJECT     ipMcastZoneScopeAddressType
     SYNTAX     InetAddressType { ipv4(1), ipv6(2) }
     DESCRIPTION
         "This compliance requires support for ipv4 or ipv6."

     OBJECT     ipMcastZoneScopeAddress
     SYNTAX     InetAddress (SIZE (4|16))
     DESCRIPTION
         "This compliance requires support for ipv4 or ipv6."




McWalter, et al.            Standards Track                    [Page 50]

RFC 5132                      IP MCAST MIB                 December 2007


   ::= { ipMcastMIBCompliances 3 }

--
-- Units of conformance
--
ipMcastMIBBasicGroup OBJECT-GROUP
   OBJECTS { ipMcastEnabled,
             ipMcastRouteEntryCount,
             ipMcastDeviceConfigStorageType
           }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support basic management of IP
           Multicast protocols."
   ::= { ipMcastMIBGroups 1 }

ipMcastMIBSsmGroup OBJECT-GROUP
   OBJECTS { ipMcastSsmRangeRowStatus,
             ipMcastSsmRangeStorageType }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support management of Source-
           Specific Multicast routing."
   ::= { ipMcastMIBGroups 2 }

ipMcastMIBRouteGroup OBJECT-GROUP
   OBJECTS { ipMcastInterfaceTtl,
             ipMcastInterfaceRateLimit,
             ipMcastInterfaceStorageType,
             ipMcastRouteUpstreamNeighborType,
             ipMcastRouteUpstreamNeighbor,
             ipMcastRouteInIfIndex,
             ipMcastRouteTimeStamp,
             ipMcastRouteExpiryTime,
             ipMcastRouteNextHopState,
             ipMcastRouteNextHopTimeStamp,
             ipMcastRouteNextHopExpiryTime
           }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support basic management of IP
           Multicast routing."
   ::= { ipMcastMIBGroups 3 }

ipMcastMIBRouteDiagnosticsGroup OBJECT-GROUP
   OBJECTS { ipMcastRoutePkts,
             ipMcastRouteTtlDropPackets,
             ipMcastRouteDifferentInIfPackets



McWalter, et al.            Standards Track                    [Page 51]

RFC 5132                      IP MCAST MIB                 December 2007


           }
   STATUS  current
   DESCRIPTION
           "A collection of routing diagnostic packet counters."
   ::= { ipMcastMIBGroups 4 }

ipMcastMIBPktsOutGroup OBJECT-GROUP
   OBJECTS { ipMcastRouteNextHopTimeStamp,
             ipMcastRouteNextHopPkts }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support management of packet
           counters for each outgoing interface entry of a route."
   ::= { ipMcastMIBGroups 5 }

ipMcastMIBHopCountGroup OBJECT-GROUP
   OBJECTS { ipMcastRouteNextHopClosestMemberHops }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support management of the use of
           hop counts in IP Multicast routing."
   ::= { ipMcastMIBGroups 6 }

ipMcastMIBRouteOctetsGroup OBJECT-GROUP
   OBJECTS { ipMcastRouteTimeStamp,
             ipMcastRouteOctets,
             ipMcastRouteTtlDropOctets,
             ipMcastRouteDifferentInIfOctets,
             ipMcastRouteNextHopTimeStamp,
             ipMcastRouteNextHopOctets }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support management of octet
           counters for each forwarding entry."
   ::= { ipMcastMIBGroups 7 }

ipMcastMIBRouteBpsGroup OBJECT-GROUP
   OBJECTS { ipMcastRouteBps }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support sampling of data rate
           in bits per second for each forwarding entry."
   ::= { ipMcastMIBGroups 8 }

ipMcastMIBRouteProtoGroup OBJECT-GROUP
   OBJECTS { ipMcastRouteProtocol, ipMcastRouteRtProtocol,
             ipMcastRouteRtAddressType, ipMcastRouteRtAddress,
             ipMcastRouteRtPrefixLength, ipMcastRouteRtType,



McWalter, et al.            Standards Track                    [Page 52]

RFC 5132                      IP MCAST MIB                 December 2007


             ipMcastRouteNextHopProtocol }
   STATUS  current
   DESCRIPTION
           "A collection of objects providing information on the
           relationship between multicast routing information and the
           IP Forwarding Table."
   ::= { ipMcastMIBGroups 9 }

ipMcastMIBLocalListenerGroup OBJECT-GROUP
   OBJECTS { ipMcastLocalListenerRunIndex }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support management of local
           listeners on hosts or routers."
   ::= { ipMcastMIBGroups 10 }

ipMcastMIBBoundaryIfGroup OBJECT-GROUP
   OBJECTS { ipMcastBoundaryTimeStamp,
             ipMcastBoundaryDroppedMcastOctets,
             ipMcastBoundaryDroppedMcastPkts,
             ipMcastBoundaryStatus,
             ipMcastBoundaryStorageType,
             ipMcastZoneScopeDefaultZoneIndex,
             ipMcastZoneScopeAddressType,
             ipMcastZoneScopeAddress,
             ipMcastZoneScopeAddressPrefixLength
           }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support management of multicast
           scope zone boundaries."
   ::= { ipMcastMIBGroups 11 }

ipMcastMIBScopeNameGroup OBJECT-GROUP
   OBJECTS { ipMcastScopeNameString, ipMcastScopeNameDefault,
             ipMcastScopeNameStatus, ipMcastScopeNameStorageType }
   STATUS  current
   DESCRIPTION
           "A collection of objects to support management of multicast
           address scope names."
   ::= { ipMcastMIBGroups 12 }

END








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RFC 5132                      IP MCAST MIB                 December 2007


7.  Security Considerations

7.1.  SNMPv3

  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 [RFC3410], section 8),
  including full support for the SNMPv3 cryptographic mechanisms (for
  authentication and privacy).

  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 access (read/change/create/delete) them.

7.2.  Writeable Objects

  There are a number of management objects defined in this MIB module
  with a MAX-ACCESS clause of read-write and/or read-create.  This
  section discusses and lists these elements.

  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.

  In this MIB module, possible effects that can be induced by SET
  operations on writeable objects include:

  o  Modifications to multicast routing behavior that prevent or
     disrupt services provided by the network, including (but not
     limited to) multicast data traffic delivery.

  o  Modifications to multicast routing behavior that allow
     interception or subversion of information that is carried by the
     network.  For example, attacks can be envisaged that would pass
     nominated multicast data streams through a nominated location,
     without the sources or listeners becoming aware of this
     subversion.




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RFC 5132                      IP MCAST MIB                 December 2007


  The following are the read-write and read-create objects defined in
  this MIB module.

  ipMcastEnabled ipMcastDeviceConfigStorageType ipMcastInterfaceTtl
  ipMcastInterfaceRateLimit ipMcastInterfaceStorageType
  ipMcastSsmRangeRowStatus ipMcastSsmRangeStorageType
  ipMcastBoundaryStatus ipMcastBoundaryStorageType
  ipMcastScopeNameString ipMcastScopeNameDefault ipMcastScopeNameStatus
  ipMcastScopeNameStorageType

7.3.  Readable Objects

  As well as the writeable objects discussed above, there are a number
  of readable objects (i.e., objects with a MAX-ACCESS other than not-
  accessible) that may be considered sensitive or vulnerable in some
  network environments.  It is thus important to control even GET
  and/or NOTIFY access to these objects and possibly to even encrypt
  the values of these objects when sending them over the network via
  SNMP.

  In this MIB module, possible effects that can be induced by GET
  and/or NOTIFY operations include:

  o  Determination of the topology, disposition, and composition of the
     network.  This information may be commercially sensitive, and may
     also be used in preparation for attacks, including any of the
     attacks described above.

  o  Determinion of whether multicast data is flowing in the network,
     or has flowed recently, as well as the locations of senders and
     recipients.  An attacker can apply 'traffic analysis' to this
     data.  In some cases, the information revealed by traffic analyses
     can be as damaging as full knowledge of the data being
     transported.

8.  IANA Considerations

  IPMCAST-MIB is rooted under the mib-2 subtree.  IANA has assigned {
  mib-2 168 } to the IPMCAST-MIB module specified in this document.

9.  Acknowledgements

  This MIB module is based on the original work in [RFC2932] by K.
  McCloghrie, D. Farinacci, and D. Thaler.

  Suggested IPv6 multicast MIBs by R. Sivaramu and R. Raghunarayan have
  been used for comparison while editing this MIB module.




McWalter, et al.            Standards Track                    [Page 55]

RFC 5132                      IP MCAST MIB                 December 2007


  The authors are grateful to Bill Fenner for fine ideas, and to Bharat
  Joshi for input and several corrections.

  The authors also wish to thank John Flick, Bert Wijnen, and Stig
  Venaas for their reviewing and comments.

10.  References

10.1.  Normative References

  [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
             Requirement Levels", BCP 14, RFC 2119, March 1997.

  [RFC2365]  Meyer, D., "Administratively Scoped IP Multicast", BCP 23,
             RFC 2365, July 1998.

  [RFC2578]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
             Schoenwaelder, Ed., "Structure of Management Information
             Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

  [RFC2579]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
             Schoenwaelder, Ed., "Textual Conventions for SMIv2",
             STD 58, RFC 2579, April 1999.

  [RFC2580]  McCloghrie, K., Perkins, D., and J. Schoenwaelder,
             "Conformance Statements for SMIv2", STD 58, RFC 2580,
             April 1999.

  [RFC2856]  Bierman, A., McCloghrie, K., and R. Presuhn, "Textual
             Conventions for Additional High Capacity Data Types",
             RFC 2856, June 2000.

  [RFC2863]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group
             MIB", RFC 2863, June 2000.

  [RFC3306]  Haberman, B. and D. Thaler, "Unicast-Prefix-based IPv6
             Multicast Addresses", RFC 3306, August 2002.

  [RFC3411]  Harrington, D., Presuhn, R., and B. Wijnen, "An
             Architecture for Describing Simple Network Management
             Protocol (SNMP) Management Frameworks", STD 62, RFC 3411,
             December 2002.

  [RFC4001]  Daniele, M., Haberman, B., Routhier, S., and J.
             Schoenwaelder, "Textual Conventions for Internet Network
             Addresses", RFC 4001, February 2005.





McWalter, et al.            Standards Track                    [Page 56]

RFC 5132                      IP MCAST MIB                 December 2007


  [RFC4007]  Deering, S., Haberman, B., Jinmei, T., Nordmark, E., and
             B. Zill, "IPv6 Scoped Address Architecture", RFC 4007,
             March 2005.

  [RFC4291]  Hinden, R. and S. Deering, "IP Version 6 Addressing
             Architecture", RFC 4291, February 2006.

  [RFC5131]  McWalter, D., "A MIB Textual Convention for Language
             Tags", RFC 5131, December 2007.

10.2.  Informative References

  [RFC2287]  Krupczak, C. and J. Saperia, "Definitions of System-Level
             Managed Objects for Applications", RFC 2287,
             February 1998.

  [RFC2932]  McCloghrie, K., Farinacci, D., and D. Thaler, "IPv4
             Multicast Routing MIB", RFC 2932, October 2000.

  [RFC3410]  Case, J., Mundy, R., Partain, D., and B. Stewart,
             "Introduction and Applicability Statements for Internet-
             Standard Management Framework", RFC 3410, December 2002.

  [RFC3569]  Bhattacharyya, S., "An Overview of Source-Specific
             Multicast (SSM)", RFC 3569, July 2003.

  [RFC4293]  Routhier, S., "Management Information Base for the
             Internet Protocol (IP)", RFC 4293, April 2006.

  [RFC4601]  Fenner, B., Handley, M., Holbrook, H., and I. Kouvelas,
             "Protocol Independent Multicast - Sparse Mode (PIM-SM):
             Protocol Specification (Revised)", RFC 4601, August 2006.

  [RFC4646]  Phillips, A. and M. Davis, "Tags for Identifying
             Languages", BCP 47, RFC 4646, September 2006.

  [RFC5015]  Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano,
             "Bidirectional Protocol Independent Multicast (BIDIR-
             PIM)", RFC 5015, October 2007.












McWalter, et al.            Standards Track                    [Page 57]

RFC 5132                      IP MCAST MIB                 December 2007


Authors' Addresses

  David McWalter
  Data Connection Ltd
  100 Church Street
  Enfield  EN2 6BQ
  UK

  EMail: [email protected]


  Dave Thaler
  Microsoft Corporation
  One Microsoft Way
  Redmond, WA  98052-6399
  USA

  EMail: [email protected]


  Andrew Kessler
  Cisco Systems
  425 E. Tasman Drive
  San Jose, CA  95134
  USA

  EMail: [email protected]
























McWalter, et al.            Standards Track                    [Page 58]

RFC 5132                      IP MCAST MIB                 December 2007


Full Copyright Statement

  Copyright (C) The IETF Trust (2007).

  This document is subject to the rights, licenses and restrictions
  contained in BCP 78, and except as set forth therein, the authors
  retain all their rights.

  This document and the information contained herein are provided on an
  "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
  OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND
  THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS
  OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF
  THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
  WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

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  Intellectual Property Rights or other rights that might be claimed to
  pertain to the implementation or use of the technology described in
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  Copies of IPR disclosures made to the IETF Secretariat and any
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