Network Working Group                                         J. Saperia
Request for Comments: 1559                 Digital Equipment Corporation
Obsoletes: 1289                                            December 1993
Category: Standards Track


                    DECnet Phase IV MIB Extensions

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.

Table of Contents

  1. Introduction ................................................  1
  2. The Network Management Framework ............................  2
  2.1 Object Definitions .........................................  2
  3. Selected Objects ............................................  3
  4. Textual Conventions .........................................  4
  5. Definitions .................................................  4
  6. Changes from RFC 1289 ....................................... 67
  7. Acknowledgements ...........................................  68
  8. References .................................................  68
  9. Security Considerations ....................................  69
  10. Author's Address ..........................................  69

1.  Introduction

  This memo defines a set of DECnet Phase IV extensions that have been
  created for the Internet MIB.  It reflects changes which are the
  result of operational experience based on RFC 1289.

  When used in conjunction with the structure of management information
  (STD 16, RFC 1155), the management information base for network
  management of TCP/IP-based internets (STD 17, RFC 1213) and the
  Simple Network Management Protocol (STD 15, RFC 1157), it will be
  possible to provide integrated network management of combined TCP/IP
  and DECnet Phase IV based internets.  This document was produced by
  the DECnet Phase IV MIB working group of the Internet Engineering
  Task Force (IETF).

  With the adoption of The Simple Network Management Protocol (STD 15,
  RFC 1157), the management information base for network management of
  TCP/IP-based internets (STD 17, RFC 1213), and the structure of



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  management information (STD 16, RFC 1155), by the Internet, and a
  large number of vendor implementations of these standards in
  commercially available products, it became possible to provide a
  higher level of effective network management in TCP/IP-based
  internets than previously available. With the growth in the use of
  these standards, network managers desired to use this environment as
  a base for providing integrated network management of multi-protocol
  networks.

  DECnet Phase IV is one widely used protocol which often coexists in
  IP-based internets. This memo provides the mechanisms by which IP-
  based management stations can effectively manage DECnet Phase IV
  based systems (especially router products) in an integrated fashion
  through the use of the standard Internet SMI, MIB and Simple Network
  Management Protocol.

  DECnet Phase IV objects have been defined to be used in conjunction
  with the Internet MIB to allow access and control of these new
  objects by the Internet community. Additional support for other
  DECnet-based protocols such as RBMS (Remote Bridge Management
  Software) or other Digital Equipment Corporation specific hardware
  platforms is not included in this document.

2.  The Network Management Framework

  The Internet-standard Network Management Framework consists of three
  components.  They are:

  o STD 16, RFC 1155 which defines the SMI, the mechanisms used for
    describing and naming objects for the purpose of management.
    STD 16, RFC 1212 defines a more concise description mechanism,
    which is wholly consistent with the SMI.

  o STD 17, RFC 1213 defines MIB-II, the core set of managed objects
    for the Internet suite of protocols.

  o STD 15, RFC 1157 which defines the SNMP, the protocol used for
    network access to managed objects.

  The Framework permits new objects to be defined for the purpose of
  experimentation and evaluation.

2.1  Object Definitions

  Managed objects are accessed via a virtual information store, termed
  the Management Information Base or MIB.  Objects in the MIB are
  defined using the subset of Abstract Syntax Notation One (ASN.1)
  defined in the SMI.  In particular, each object type is named by an



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  OBJECT IDENTIFIER, an administratively assigned name.  The object
  type together with an object instance serves to uniquely identify a
  specific instantiation of the object.  For human convenience, we
  often use a textual string, termed the descriptor, to refer to the
  object type.

3.  Selected Objects

  The objects included in this memo have been created from the DIGITAL
  Network Architecture Network Management Functional Specification
  Version 4.0.0, dated July 1983. An attempt has been made to provide a
  reasonable ordering of these variables into groups. These groups are:

       System Group
       Network Management Group
       Session Group
       End Group
       Routing Group
       Circuit Group
       DDCMP Group
       DDCMP Multipoint Control Group
       Ethernet Group
       Counters Group
       Adjacency Group
       Line Group
       Non Broadcast Line Group
       Area Group

  An effort has also been made to preserve the original syntax of each
  object wherever possible, for example, a DECnet Phase IV object is
  Executor State. This was originally coded as a NICE (Network
  Information and Control Exchange) data type which is a coded single
  field object of 1 byte in length. When converted for inclusion into
  the Internet MIB using the Internet SMI, it became an enumerated
  integer.

  All objects in this memo are described using the standard Internet
  SMI and BER of STD 16, RFC 1155. A complete description of an object
  will include the name, syntax and encoding. Just as with objects
  supported in the MIB (STD 17, RFC 1213), an object name is identified
  with an object identifier which has been administratively assigned.
  This identifies an Object Type. When an object type is combined with
  a specific instance, the particular object is uniquely identified.
  The use of Object Descriptors in this memo is consistent with that of
  STD 17, RFC 1213 - they are text strings meant to be read by humans.
  The descriptors have been taken from the original DIGITAL Network
  Architecture Network Management Functional Specification Version
  4.0.0 Dated July 1983 which defined DECnet Phase IV objects. These



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  names were then massaged to put them in a form as consistent as
  possible with object type names listed in the standard Internet MIB.
  Object defintion information is also taken directly from the Network
  Architecture Network Managment Functional Specification cited above
  wherever possible. In this document, EXECUTOR is intended to
  reference only the DECnet software and is not intended to effect any
  other protocols which may be running on the system.

4.  Textual Conventions

  New datatypes have been introduced as a textual conventions in this
  DECnet Phase IV MIB document. The purpose of these additions is to
  facilitate understanding of new objects in this MIB. No changes to
  the SMI or the SNMP are necessary to support these conventions which
  are described in 5 (Definitions).

5.  Definitions

       DECNET-PHIV-MIB DEFINITIONS ::= BEGIN

       IMPORTS
          Gauge
             FROM RFC1155-SMI
           OBJECT-TYPE
              FROM RFC-1212
           mib-2, DisplayString
             FROM RFC1213-MIB;

  -- DECNet Phase-IV MIB

       phiv      OBJECT IDENTIFIER ::= { mib-2 18 }

  -- textual conventions

  PhivAddr ::= OCTET STRING (SIZE (2))
  -- This data type is intended as a short word representation of
  -- standard DECnet Phase IV addresses. DECnet addresses are
  -- hierarchically structured numbers assigned to a particular
  -- DECnet node. The address is structured so that the area
  -- number is contained in the most significant 6 bits of the
  -- first octet.  The next 2 bits of the first octet contain
  -- the first two bits of the host address.  The remainder of
  -- the host address is contained in the second octet.

  PhivCounter ::= INTEGER
  -- This data type has been created for DECnet counters.  These
  -- counters latch at their maximum specified value until either
  -- the system is restarted, or they are reset to zero by the user



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  -- or management software.

  InterfaceIndex ::= INTEGER
  --  The range of ifIndex, i.e., (1..2147483647)


  -- groups in the decnetiv mib

        phivSystem             OBJECT IDENTIFIER ::= { phiv 1 }
        phivManagement         OBJECT IDENTIFIER ::= { phiv 2 }
        session                OBJECT IDENTIFIER ::= { phiv 3 }
        end                    OBJECT IDENTIFIER ::= { phiv 4 }
        routing                OBJECT IDENTIFIER ::= { phiv 5 }
        circuit                OBJECT IDENTIFIER ::= { phiv 6 }
        ddcmp                  OBJECT IDENTIFIER ::= { phiv 7 }
        control                OBJECT IDENTIFIER ::= { phiv 8 }
        ethernet               OBJECT IDENTIFIER ::= { phiv 9 }
        counters               OBJECT IDENTIFIER ::= { phiv 10 }
        adjacency              OBJECT IDENTIFIER ::= { phiv 11 }
        line                   OBJECT IDENTIFIER ::= { phiv 12 }
        nonBroadcastLine       OBJECT IDENTIFIER ::= { phiv 14 }
        area                   OBJECT IDENTIFIER ::= { phiv 15 }

  -- System Group

  -- The implementation of the System Group is mandatory for
  -- all systems.

  phivSystemState OBJECT-TYPE
       SYNTAX INTEGER {
           on (1),
           off (2),
           shut (3),
           restricted (4)
       }
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This represents the operational state of the executor
           node.
           The possible states are:
           ON          Allows logical links.
           OFF         Allows no new links, terminates existing
                       links, and stops routing traffic through.
           SHUT        Allows no new logical links, does not
                       destroy existing logical links, and goes
                       to the OFF state when all logical links are
                       gone.



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           RESTRICTED  Allows no new incoming logical links from
                       other nodes.

           NOTE: These values are incremented by one compared to
           the standard DECnet values in order to maintain
           compliance with RFC 1155)."
       ::= { phivSystem 1 }

  phivExecIdent OBJECT-TYPE
       SYNTAX DisplayString (SIZE (0..32))
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This is a text string that describes the executor node
           (for example, 'Research Lab').  The string is up to 32
           characters of any type."
       ::= { phivSystem 2 }

  -- Network Management Group

  -- The implementation of the Network Management Group is
  -- mandatory for all systems which contain a DECnet-style
  -- management version.


  phivMgmtMgmtVers OBJECT-TYPE
       SYNTAX DisplayString (SIZE (0..255))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This is the read-only Network Management Version,
           consisting of the version number, the Engineering
           Change Order (ECO) number, and the user ECO number
           (for example, 3.0.0). This parameter applies to the
           executor node only."
       ::= { phivManagement 1 }

  -- Session Layer Group

  -- The implementation of the Session Layer Group is optional.
  -- A system can be said to implement this group if and only if
  -- all objects in this group are implemented.

  phivSessionSystemName OBJECT-TYPE
       SYNTAX DisplayString (SIZE (0..6))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION



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           "Name to be associated with the node identification.
           Only one name can be assigned to a node address or a
           circuit identification. No name should be used more than
           once in a DECnet network. Node-name is one to six upper
           case alphanumeric characters with at least one alpha
           character. A length of 0 indicates no name."
       ::= { session 1 }

  phivSessionInTimer OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum duration between the
           time a connect is received for a process at the
           executor node and the time that process accepts or
           rejects it. If the connect is not accepted or rejected
           by the user within the number of seconds specified,
           Session Control rejects it for the user.  A value of 0
           indicates no timer is running."
       ::= { session 2 }

  phivSessionOutTimer OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the duration between the time the
           executor requests a connect and the time that connect is
           acknowledged by the destination node. If the connect is
           not acknowledged within the number of seconds
           specified, Session Control returns an error.  A value of 0
           indicates no timer is running."
       ::= { session 3 }

  -- End Communication Layer Group

  -- The implementation of the End Communication Layer Group is optional.
  -- A system can be said to implement this group if and only if
  -- all objects in this group are implemented.

  -- Remote State Table

  phivEndRemoteTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivEndRemoteEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION



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           "Information about the state of sessions between the
           node under study and the nodes found in the table."
       ::= { end 1 }

  phivEndRemoteEntry OBJECT-TYPE
       SYNTAX PhivEndRemoteEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about a particular remote node as seen
           from the end communication layer."
       INDEX  { phivEndRemoteHostNodeID }
       ::= { phivEndRemoteTable 1 }

  PhivEndRemoteEntry ::=
       SEQUENCE {
           phivEndRemoteHostNodeID
               PhivAddr,
           phivEndRemoteState
               INTEGER,
           phivEndCircuitIndex
               INTEGER,
           phivEndActiveLinks
               INTEGER,
           phivEndDelay
               INTEGER
       }

  phivEndRemoteHostNodeID OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value is the address of the remote node to be
           evaluated."
       ::= { phivEndRemoteEntry 1 }

  phivEndRemoteState OBJECT-TYPE
       SYNTAX INTEGER {
           on (1),
           off (2),
           shut (3),
           restricted (4)
       }
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This represents the operational state of the remote node



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           being evaluated.
           The possible states are:

           ON          Allows logical links.
           OFF         Allows no new links, terminates existing
                       links, and stops routing traffic through.
           SHUT        Allows no new logical links, does not
                       destroy existing logical links, and goes
                       to the OFF state when all logical links are
                       gone.
           RESTRICTED  Allows no new incoming logical links from
                       other nodes.

           NOTE: These values are incremented by one compared to
           the standard DECnet values in order to maintain
           compliance with RFC 1155."
       ::= { phivEndRemoteEntry 2 }

  phivEndCircuitIndex OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "A unique index value for each known circuit used to
           communicate with the remote node.  This is the same
           value as phivCircuitIndex."
       ::= { phivEndRemoteEntry 3 }

  phivEndActiveLinks OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only parameter represents the number of active
           logical links from the executor to the destination node."
       ::= { phivEndRemoteEntry 4 }

  phivEndDelay OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only parameter is the average round trip
           delay in seconds to the destination node. This
           parameter is kept on a remote node basis."
       ::= { phivEndRemoteEntry 5 }

  -- End System Counter Table



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  phivEndCountTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivEndCountEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about the counters associated with each end
           system that is known to the entity. These counters
           reflect totals from the perspective of the executor
           node."
       ::= { end 2 }

  phivEndCountEntry OBJECT-TYPE
       SYNTAX PhivEndCountEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about a particular session between two end
           systems."
       INDEX  { phivEndCountHostNodeID }
       ::= { phivEndCountTable 1 }

  PhivEndCountEntry ::=
       SEQUENCE {
           phivEndCountHostNodeID
               PhivAddr,
           phivEndCountSecsLastZeroed
               PhivCounter,
           phivEndCountUsrBytesRec
               PhivCounter,
           phivEndCountUsrBytesSent
               PhivCounter,
           phivEndUCountUsrMessRec
               PhivCounter,
           phivEndCountUsrMessSent
               PhivCounter,
           phivEndCountTotalBytesRec
               PhivCounter,
           phivEndCountTotalBytesSent
               PhivCounter,
           phivEndCountTotalMessRec
               PhivCounter,
           phivEndCountTotalMessSent
               PhivCounter,
           phivEndCountConnectsRecd
               PhivCounter,
           phivEndCountConnectsSent
               PhivCounter,



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           phivEndCountReponseTimeouts
               PhivCounter,
           phivEndCountRecdConnectResErrs
               PhivCounter
       }

  phivEndCountHostNodeID OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value is the address of the remote node to be
           evaluated."
       ::= { phivEndCountEntry 1 }

  phivEndCountSecsLastZeroed OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value is the number of seconds that have elapsed
           since the counters for the node in this table row were
           last set to zero. This counter is located in the
           network management layer, but is returned with the
           end system information which follows."
       ::= { phivEndCountEntry 2 }

  phivEndCountUsrBytesRec OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of user bytes received from the target host."
       ::= { phivEndCountEntry 3 }

  phivEndCountUsrBytesSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of user bytes sent to the target host."
       ::= { phivEndCountEntry 4 }

  phivEndUCountUsrMessRec OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION



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           "Number of user messages received from the target host."
       ::= { phivEndCountEntry 5 }

  phivEndCountUsrMessSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of user messages sent to the target host."
       ::= { phivEndCountEntry 6 }

  phivEndCountTotalBytesRec OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of bytes received from the target host."
       ::= { phivEndCountEntry 7 }

  phivEndCountTotalBytesSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of bytes sent to the target host."
       ::= { phivEndCountEntry 8 }

  phivEndCountTotalMessRec OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of messages received from the target host."
       ::= { phivEndCountEntry 9 }

  phivEndCountTotalMessSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of messages sent to the target host."
       ::= { phivEndCountEntry 10 }

  phivEndCountConnectsRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION



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RFC 1559                  DECnet Phase IV MIB              December 1993


           "Number of connects received from the target host."
       ::= { phivEndCountEntry 11 }

  phivEndCountConnectsSent OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of connects sent to the target host."
       ::= {phivEndCountEntry 12 }

  phivEndCountReponseTimeouts OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of response timeouts."
       ::= { phivEndCountEntry 13 }

  phivEndCountRecdConnectResErrs OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of received connect resource errors."
       ::= {phivEndCountEntry 14 }

  -- additional End System objects

  phivEndMaxLinks OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum active logical
           link count allowed for the executor."
       ::= { end 3 }

  phivEndNSPVers OBJECT-TYPE
       SYNTAX DisplayString (SIZE (0..255))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only parameter represents the version number
           of the node End Communication S/W. The format is
           version number, ECO, and user ECO, e.g., 4.1.0"
       ::= { end 4 }




DECnet Phase IV MIB Working Group                              [Page 13]

RFC 1559                  DECnet Phase IV MIB              December 1993


  phivEndRetransmitFactor OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum number of times the
           source End Communication at the executor node will
           restart the retransmission timer when it expires. If
           the number is exceeded, Session Control disconnects the
           logical link for the user."
       ::= { end 5 }

  phivEndDelayFact OBJECT-TYPE
       SYNTAX INTEGER (1..255)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This is the number by which to multiply one sixteenth
           of the estimated round trip delay to a node to set the
           retransmission timer to that node."
       ::= { end 6 }

  phivEndDelayWeight OBJECT-TYPE
       SYNTAX INTEGER (1..255)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This number represents the weight to apply to a
           current round trip delay estimate to a remote node
           when updating the estimated round trip delay to a node.
           On some systems the number must be 1 less than a power
           of 2 for computational efficiency."
       ::= { end 7 }

  phivEndInactivityTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum duration of inactivity
           (no data in either direction) on a logical link before
           the node checks to see if the logical link still works.
           If no activity occurs within the minimum number of
           seconds, End Communication generates artificial
           traffic to test the link (End Communication
           specification)."
       ::= { end 8 }




DECnet Phase IV MIB Working Group                              [Page 14]

RFC 1559                  DECnet Phase IV MIB              December 1993


  phivEndCountZeroCount OBJECT-TYPE
       SYNTAX INTEGER {
           other (1),
           reset (2)
       }
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "When this value is set to 2, all of the counters in
           the End System Counter Table are set to zero."
       ::= { end 9 }

  phivEndMaxLinksActive OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the high water mark for the
           number of links that were active at any one time."
       ::= { end 10 }

  -- Routing Layer Group

  -- The implementation of the Routing Layer Group is mandatory for
  -- all systems that implement level 1 routing layer
  -- communications.

  phivRouteBroadcastRouteTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value determines the maximum time in seconds
            allowed between Routing updates on Ethernet
            circuits. When this timer expired before a routing
            update occurs, a routing update is forced.  With a
            standard calculation, Routing also uses this timer
            to enforce a minimum delay between routing updates."
       ::= { routing 1 }

  phivRouteBuffSize OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This parameter value determines the maximum size of
            a Routing message. It therefore determines the maximum
            size message that can be forwarded.  This size includes



DECnet Phase IV MIB Working Group                              [Page 15]

RFC 1559                  DECnet Phase IV MIB              December 1993


            protocol overhead down to and including the End
            Communication layer, plus a constant value of 6. (This
            value of 6 is included to provide compatibility with
            the parameter definition in Phase III, which included
            the Routing overhead.) It does not include Routing or
            Data link overhead (except for the constant value of
            6). There is one buffer size for all circuits.

            NOTE: The BUFFER SIZE defines the maximum size messages
            that the Routing layer can forward. The SEGMENT BUFFER
            SIZE (defined below) defines the maximum size messages
            that the End Communication layer can transmit or
            receive. The SEGMENT BUFFER SIZE is always less than
            or equal to the BUFFER SIZE. Normally the two
            parameters will be equal. They may be different to
            allow the network manager to alter buffer sizes
            on all nodes without interruption of service. They both
            include an extra 6 bytes for compatibility with Phase
            III."
       ::= { routing 2 }

  phivRouteRoutingVers OBJECT-TYPE
       SYNTAX DisplayString (SIZE (0..255))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only parameter identifies the executor node's
           Routing version number.  The format is version number,
           ECO, and user ECO, e.g., 4.1.0"
       ::= { routing 3 }

  phivRouteMaxAddr OBJECT-TYPE
       SYNTAX INTEGER (1..1023)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the largest node number and,
           therefore, number of nodes that can be known about
           by the executor node's home area."
       ::= { routing 4 }

  phivRouteMaxBdcastNonRouters OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum total number of
           nonrouters the executor node can have on its Ethernet



DECnet Phase IV MIB Working Group                              [Page 16]

RFC 1559                  DECnet Phase IV MIB              December 1993


           circuits."
       ::= { routing 5 }

  phivRouteMaxBdcastRouters OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum total number of
           routers the executor node can have on its Ethernet
           circuits."
       ::= { routing 6 }

  phivRouteMaxBuffs OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum number of transmit
           buffers that Routing may use for all circuits."
       ::= { routing 7 }

  phivRouteMaxCircuits OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum number of Routing
           circuits that the executor node can know about."
       ::= { routing 8 }

  phivRouteMaxCost OBJECT-TYPE
       SYNTAX INTEGER (1..1022)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum total path cost
           allowed from the executor to any node within an area.
           The path cost is the sum of the circuit costs along
           a path between two nodes. This parameter defines the
           point where the executor node's Routing routing
           decision algorithm declares another node unreachable
           because the cost of the least costly path to the
           other node is excessive. For correct operation, this
           parameter must not be less than the maximum path cost
           of the network."
       ::= { routing 9 }




DECnet Phase IV MIB Working Group                              [Page 17]

RFC 1559                  DECnet Phase IV MIB              December 1993


  phivRouteMaxHops OBJECT-TYPE
       SYNTAX INTEGER (1..30)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum number of routing hops
           allowable from the executor to any other reachable node
           within an area. (A hop is the logical distance over a
           circuit between two adjacent nodes.) This parameter
           defines the point where the executor node's Routing
           routing decision algorithm declares another node
           unreachable because the length of the shortest path
           between the two nodes is too long. For correct
           operation, this parameter must not be less than the
           network diameter. (The network diameter is the
           reachability distance between the two nodes of the
           network having the greatest reachability distance,
           where reachability distance is the length the shortest
           path between a given pair of nodes.)"
       ::= { routing 10 }

  phivRouteMaxVisits OBJECT-TYPE
       SYNTAX INTEGER (1..63)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum number of nodes a
           message coming into the executor node can have visited.
           If the message is not for this node and the MAXIMUM
           VISITS number is exceeded, the message is discarded.
           The MAXIMUM VISITS parameter defines the point where
           the packet lifetime control algorithm discards
           a packet that has traversed too many nodes. For correct
           operation, this parameter must not be less than the
           maximum path length of the network. (The maximum path
           length is the routing distance between the two nodes of
           the network having the greatest routing distance, where
           routing distance is the length of the least costly
           path between a given pair of nodes.)"
       ::= { routing 11 }

  phivRouteRoutingTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value determines the maximum time in seconds
           allowed between Routing updates on non-Ethernet



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RFC 1559                  DECnet Phase IV MIB              December 1993


           circuits. When this timer expires before a routing
           update occurs, a routing update is forced."
       ::= { routing 12 }

  phivRouteSegBuffSize OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This parameter value determines the maximum size of an
           end-to-end segment. The size is a decimal integer in
           the range 1-65535. This size is in bytes. This size
           includes protocol overhead down to and including the
           End Communication layer, plus a constant value of 6.
           (This value of 6 is included to provide compatibility
           with the BUFFER SIZE parameter definition.) It does not
           include Routing or Data link overhead (except for the
           constant value of 6)."
       ::= { routing 13 }

  phivRouteType OBJECT-TYPE
       SYNTAX INTEGER {
           routing-III (1),
           nonrouting-III (2),
           area (3),
           routing-IV (4),
           nonrouting-IV (5)
       }
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "This parameter indicates the type of the executor
           node. The node-type is one of the following:

           routing-III
           nonrouting-III
           routing-IV
           ronrouting-IV
           area

           A routing node has full routing capability. A
           nonrouting node contains a subset of the Routing
           routing modules. The III and IV indicate the DNA
           phase of the node. Nonrouting nodes can deliver
           and receive packets to and from any node, but cannot
           route packets from other nodes through to other nodes.
           An area node routes between areas. Refer to the Routing
           specification for details.



DECnet Phase IV MIB Working Group                              [Page 19]

RFC 1559                  DECnet Phase IV MIB              December 1993



           For adjacent nodes, this is a read-only parameter that
           indicates the type of the reachable adjacent node.
           NOTE: The ROUTING-III and NONROUTING-III values are
           incremented by one compared to the standard DECnet
           values in order to maintain compliance with RFC 1155)"
       ::= { routing 14 }

  phivRouteCountAgedPktLoss OBJECT-TYPE
       SYNTAX PhivCounter (0..127)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of aged packet losses."
       ::= { routing 15 }

  phivRouteCountNodeUnrPktLoss OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of node unreachable packet losses."
       ::= { routing 16 }

  phivRouteCountOutRngePktLoss OBJECT-TYPE
       SYNTAX PhivCounter (0..127)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of node out-of-range packet losses."
       ::= { routing 17 }

  phivRouteCountOverSzePktLoss OBJECT-TYPE
       SYNTAX PhivCounter (0..127)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of Oversized packet losses."
       ::= { routing 18 }

  phivRouteCountPacketFmtErr OBJECT-TYPE
       SYNTAX PhivCounter (0..127)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of packet format errors."
       ::= { routing 19 }




DECnet Phase IV MIB Working Group                              [Page 20]

RFC 1559                  DECnet Phase IV MIB              December 1993


  phivRouteCountPtlRteUpdtLoss OBJECT-TYPE
       SYNTAX PhivCounter (0..127)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of partial routing update losses."
       ::= { routing 20 }

  phivRouteCountVerifReject OBJECT-TYPE
       SYNTAX PhivCounter (0..127)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of verification rejects."
       ::= { routing 21 }

  -- Level 1 Routing Table

  phivLevel1RouteTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivLevel1RouteEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about the currently known DECnet Phase
           IV Routes."
       ::= { routing 22 }

  phivLevel1RouteEntry OBJECT-TYPE
       SYNTAX PhivLevel1RouteEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about the currently known DECnet Phase
           IV Routes."
       INDEX  { phivLevel1RouteNodeAddr }
       ::= { phivLevel1RouteTable 1 }

  PhivLevel1RouteEntry ::=
       SEQUENCE {
           phivLevel1RouteNodeAddr
               PhivAddr,
           phivLevel1RouteCircuitIndex
               INTEGER,
           phivLevel1RouteCost
               INTEGER,
           phivLevel1RouteHops
               INTEGER,
           phivLevel1RouteNextNode



DECnet Phase IV MIB Working Group                              [Page 21]

RFC 1559                  DECnet Phase IV MIB              December 1993


               PhivAddr
       }

  phivLevel1RouteNodeAddr OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value is the address of the node about which
           routing information is contained in this level 1
           routing table."
       ::= { phivLevel1RouteEntry 1 }

  phivLevel1RouteCircuitIndex OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "A unique index value for each known circuit. This is
           the index to the circuit state table and is the same
           value as phivCircuitIndex."
       ::= { phivLevel1RouteEntry 2 }

  phivLevel1RouteCost OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only parameter represents the total cost
           over the current path to the destination node. Cost is
           a positive integer value associated with using a
           circuit. Routing routes messages (data) along the path
           between two nodes with the smallest cost. COST is kept
           on a remote node basis."
       ::= { phivLevel1RouteEntry 3 }

  phivLevel1RouteHops OBJECT-TYPE
       SYNTAX INTEGER (0..127)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only parameter represents the number of hops
           over to a destination node. A hop is Routing value
           representing the logical distance between two nodes in
           a network. HOPS is kept on a remote node basis."
       ::= { phivLevel1RouteEntry 4 }

  phivLevel1RouteNextNode OBJECT-TYPE



DECnet Phase IV MIB Working Group                              [Page 22]

RFC 1559                  DECnet Phase IV MIB              December 1993


       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only value indicates the next node on the
           circuit used to get to the node under scrutiny
           (next hop)."
       ::= { phivLevel1RouteEntry 5 }

  -- Additional routing parameters

  phivRouteCountZeroCount OBJECT-TYPE
       SYNTAX INTEGER {
           other (1),
           reset (2)
       }
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "When this value is set to 2, the following objects are
           set to Zero: phivRouteCountAgedPktLoss,
           phivRouteCountNodeUnrPktLoss,
           phivRouteCountOutRngePktLoss,
           phivRouteCountOverSzePktLoss,
           phivRouteCountPacketFmtErr,
           phivRouteCountPtlRteUpdtLoss, and
           phivRouteCountVerifReject."
       ::= { routing 23 }

  phivRouteSystemAddr OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "DECnet Phase IV node address."
       ::= { routing 24 }

  phivRouteRoutingType OBJECT-TYPE
       SYNTAX INTEGER {
           routing-III (1),
           nonrouting-III (2),
           area (3),
           routing-IV (4),
           nonrouting-IV (5)
       }
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION



DECnet Phase IV MIB Working Group                              [Page 23]

RFC 1559                  DECnet Phase IV MIB              December 1993


           "This read-write parameter indicates the type of the executor
           node. The node-type is one of the following:

           routing-III
           nonrouting-III
           routing-IV
           ronrouting-IV
           area

           A routing node has full routing capability. A
           nonrouting node contains a subset of the Routing
           routing modules. The III and IV indicate the DNA
           phase of the node. Nonrouting nodes can deliver
           and receive packets to and from any node, but cannot
           route packets from other nodes through to other nodes.
           An area node routes between areas. Refer to the Routing
           specification for details.

           For adjacent nodes, this is a read-only parameter that
           indicates the type of the reachable adjacent node.
           NOTE: The ROUTING-III and NONROUTING-III values are
           incremented by one compared to the standard DECnet
           values in order to maintain compliance with RFC 1155)"
       ::= { routing 25 }

  phivRouteSystemAddress OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "DECnet Phase IV node address."
       ::= { routing 26 }

  -- Circuit Group

  -- The implementation of the Circuit Group is mandatory for
  -- all systems.

  -- Circuit Parameters Table

  phivCircuitParametersTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivCircuitParametersEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about the parameters associated with all
           circuits currently known."
       ::= {circuit 1 }



DECnet Phase IV MIB Working Group                              [Page 24]

RFC 1559                  DECnet Phase IV MIB              December 1993


  phivCircuitParametersEntry OBJECT-TYPE
       SYNTAX PhivCircuitParametersEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Parameters information about all circuits currently
            known."
       INDEX  { phivCircuitIndex }
       ::= { phivCircuitParametersTable 1 }

  PhivCircuitParametersEntry ::=
       SEQUENCE {
           phivCircuitIndex
               INTEGER,
           phivCircuitLineIndex
               INTEGER,
           phivCircuitCommonState
               INTEGER,
           phivCircuitCommonSubState
               INTEGER,
           phivCircuitCommonName
               DisplayString,
           phivCircuitExecRecallTimer
               INTEGER,
           phivCircuitCommonType
               INTEGER,
           phivCircuitService
               INTEGER,
           phivCircuitExecCost
               INTEGER,
           phivCircuitExecHelloTimer
               INTEGER
      }

  phivCircuitIndex OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "A unique index value for each known circuit."
       ::= { phivCircuitParametersEntry 1 }

  phivCircuitLineIndex OBJECT-TYPE
       SYNTAX InterfaceIndex
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The line on which this circuit is active.  This is



DECnet Phase IV MIB Working Group                              [Page 25]

RFC 1559                  DECnet Phase IV MIB              December 1993


            the same as the ifIndex."
       ::= { phivCircuitParametersEntry 2 }

  phivCircuitCommonState OBJECT-TYPE
       SYNTAX INTEGER {
           on (1),
           off (2),
           service (3),
           cleared (4)
       }
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the circuit's Network Management
           operational state. NOTE: These values are incremented
           by one compared to the standard DECnet values in order
           to maintain compliance with RFC 1155."
       ::= { phivCircuitParametersEntry 3 }

  phivCircuitCommonSubState OBJECT-TYPE
       SYNTAX INTEGER {
           starting (1),
           reflecting (2),
           looping (3),
           loading (4),
           dumping (5),
           triggering (6),
           autoservice (7),
           autoloading (8),
           autodumping (9),
           autotriggering (10),
           synchronizing (11),
           failed (12),
           running (13)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the circuit's Network Management
           operational and service substate. NOTE: These values are
           incremented by one compared to the standard DECnet values
           in order to maintain compliance with RFC 1155."
       ::= { phivCircuitParametersEntry 4 }

  phivCircuitCommonName OBJECT-TYPE
       SYNTAX DisplayString (SIZE (0..16))
       ACCESS read-only
       STATUS mandatory



DECnet Phase IV MIB Working Group                              [Page 26]

RFC 1559                  DECnet Phase IV MIB              December 1993


       DESCRIPTION
           "The name of the circuit entry in the table, for example,
            SVA-0 or in a level 2 router ASYNC-8 or ETHER-1)."
       ::= { phivCircuitParametersEntry 5 }

  phivCircuitExecRecallTimer OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This parameter represents the minimum number of
           seconds to wait before restarting the circuit.  A
           value of 0 indicates not timer is running."
       ::= { phivCircuitParametersEntry 6 }

  phivCircuitCommonType OBJECT-TYPE
       SYNTAX INTEGER {
           ddcmp-point (1),
           ddcmp-control (2),
           ddcmp-tributary (3),
           x25 (4),
           ddcmp-dmc (5),
           ethernet (6),
           ci (7),
           qp2-dte20 (8),
           bisync (9),
           other (14),
           fddi (15)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Represents the type of the circuit. For X.25 circuits,
           the value must be set to X25. For DDCMP and Ethernet
           circuits it is read only and is the same value as the
           protocol of the associated line.
           NOTE: Values 1 - 5 are incremented by one compared to the
           standard DECnet values in order to maintain compliance
           with RFC 1155."
       ::= { phivCircuitParametersEntry 7 }

  phivCircuitService  OBJECT-TYPE
       SYNTAX INTEGER {
           enabled (1),
           disabled (2)
       }
       ACCESS read-write
       STATUS mandatory



DECnet Phase IV MIB Working Group                              [Page 27]

RFC 1559                  DECnet Phase IV MIB              December 1993


       DESCRIPTION
           "This value indicates whether or not Network Management
           allows service operations on a circuit. The values for
           service-control are as follows:

           ENABLED     SERVICE state and/or service functions are
                       allowed.

           DISABLED    SERVICE state and/or service functions are not
                       allowed.

           NOTE: These values are incremented by one compared to the
           standard DECnet values in order to maintain compliance
           with RFC 1155."
       ::= { phivCircuitParametersEntry 8 }

  phivCircuitExecCost OBJECT-TYPE
       SYNTAX INTEGER (1..25)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the routing cost of the circuit.
           Routing sends messages along the path between two nodes
           having the smallest cost."
       ::= { phivCircuitParametersEntry 9 }

  phivCircuitExecHelloTimer OBJECT-TYPE
       SYNTAX INTEGER (1..8191)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value determines the frequency of Routing Hello
           messages sent to the adjacent node on the circuit."
       ::= { phivCircuitParametersEntry 10 }

  -- Circuit Counters Table

  phivCircuitCountTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivCircuitCountEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about the counters associated with all
           circuits currently known."
       ::= { circuit 2 }

         phivCircuitCountEntry OBJECT-TYPE
       SYNTAX PhivCircuitCountEntry



DECnet Phase IV MIB Working Group                              [Page 28]

RFC 1559                  DECnet Phase IV MIB              December 1993


       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Counter information about all circuits currently known"
       INDEX     { phivCircuitIndex }
       ::= { phivCircuitCountTable 1 }

  PhivCircuitCountEntry ::=
       SEQUENCE {
           phivCircuitCountSecLastZeroed
               PhivCounter,
           phivCircuitCountTermPacketsRecd
               PhivCounter,
           phivCircuitCountOriginPackSent
               PhivCounter,
           phivCircuitCountTermCongLoss
               PhivCounter,
           phivCircuitCountCorruptLoss
               PhivCounter,
           phivCircuitCountTransitPksRecd
               PhivCounter,
           phivCircuitCountTransitPkSent
               PhivCounter,
           phivCircuitCountTransitCongestLoss
               PhivCounter,
           phivCircuitCountCircuitDown
               PhivCounter,
           phivCircuitCountInitFailure
               PhivCounter,
           phivCircuitCountAdjDown
               PhivCounter,
           phivCircuitCountPeakAdj
               PhivCounter,
           phivCircuitCountBytesRecd
               PhivCounter,
           phivCircuitCountBytesSent
               PhivCounter,
           phivCircuitCountDataBlocksRecd
               PhivCounter,
           phivCircuitCountDataBlocksSent
               PhivCounter,
           phivCircuitCountUsrBuffUnav
               PhivCounter
       }

  phivCircuitCountSecLastZeroed  OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only



DECnet Phase IV MIB Working Group                              [Page 29]

RFC 1559                  DECnet Phase IV MIB              December 1993


       STATUS mandatory
       DESCRIPTION
           "Number of seconds since the circuit counters for this
           circuit were last zeroed."
       ::= { phivCircuitCountEntry 1 }

  phivCircuitCountTermPacketsRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of terminating packets received on this circuit."
       ::= { phivCircuitCountEntry 2 }

  phivCircuitCountOriginPackSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of originating packets sent on this circuit."
       ::= { phivCircuitCountEntry 3 }

  phivCircuitCountTermCongLoss OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of terminating congestion losses on this
           circuit."
       ::= { phivCircuitCountEntry 4 }

  phivCircuitCountCorruptLoss OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of corruption losses on this circuit."
       ::= { phivCircuitCountEntry 5 }

  phivCircuitCountTransitPksRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of Transit packets received on this circuit."
       ::= { phivCircuitCountEntry 6 }

  phivCircuitCountTransitPkSent OBJECT-TYPE



DECnet Phase IV MIB Working Group                              [Page 30]

RFC 1559                  DECnet Phase IV MIB              December 1993


       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of transit packets sent on this circuit."
       ::= { phivCircuitCountEntry 7 }

  phivCircuitCountTransitCongestLoss OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of transit congestion losses on this circuit."
       ::= { phivCircuitCountEntry 8 }

  phivCircuitCountCircuitDown OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of circuit downs on this circuit."
       ::= { phivCircuitCountEntry 9 }

  phivCircuitCountInitFailure OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of Initialization failures on this circuit."
       ::= { phivCircuitCountEntry 10 }

  phivCircuitCountAdjDown OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This counter indicates the number of adjacency losses
           that result from any of the following:
                Node listener timeout
                Invalid data received at node listener
                Unexpected control (initialization or verification)
                    message received
                Routing message received with a checksum error
                Node identification from a routing message or a
                Hello message that is not the one expected Hello
                message received indicating that connectivity
                became one-way
                Adjacency idled."



DECnet Phase IV MIB Working Group                              [Page 31]

RFC 1559                  DECnet Phase IV MIB              December 1993


       ::= { phivCircuitCountEntry 11 }

  phivCircuitCountPeakAdj OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This counter indicates the maximum number of nodes
           that are up on the circuit."
       ::= { phivCircuitCountEntry 12 }

  phivCircuitCountBytesRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of bytes received on this circuit."
       ::= { phivCircuitCountEntry 13 }

  phivCircuitCountBytesSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of bytes sent on this circuit."
       ::= { phivCircuitCountEntry 14 }

  phivCircuitCountDataBlocksRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of data blocks received on this circuit."
       ::= { phivCircuitCountEntry 15 }

  phivCircuitCountDataBlocksSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of data blocks sent on this circuit."
       ::= { phivCircuitCountEntry 16 }

  phivCircuitCountUsrBuffUnav OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION



DECnet Phase IV MIB Working Group                              [Page 32]

RFC 1559                  DECnet Phase IV MIB              December 1993


           "Number of user buffer unavailable errors."
       ::= { phivCircuitCountEntry 17 }

  -- Additional Circuit Parameters

  phivCircuitOrigQueueLimit OBJECT-TYPE
       SYNTAX INTEGER
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This parameter indicates the maximum number of
           originating packets that may be outstanding on this
           circuit. This does not include route-thru traffic."
       ::= { circuit 3 }

  phivCircuitCountZeroCount OBJECT-TYPE
       SYNTAX INTEGER {
           other (1),
           reset (2)
       }
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "When this value is set to 2, all of the counters in the
           Circuit Counter Table are set to zero."
       ::= { circuit 4 }

  -- DDCMP Circuit Group

  -- The implementation of the DDCMP Circuit Group is optional.
  -- A system can be said to implement this group if and only if
  -- all objects in this group are implemented.

  -- DDCMP Parameters Table

  phivDDCMPCircuitParametersTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivDDCMPCircuitParametersEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about DDCMP circuit parameters."
       ::= { ddcmp 1}

  phivDDCMPCircuitParametersEntry OBJECT-TYPE
       SYNTAX PhivDDCMPCircuitParametersEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION



DECnet Phase IV MIB Working Group                              [Page 33]

RFC 1559                  DECnet Phase IV MIB              December 1993


           "Parameters information about DDCMP circuits currently
            known."
       INDEX     { phivDDCMPCircuitIndex }
       ::= { phivDDCMPCircuitParametersTable 1 }

  PhivDDCMPCircuitParametersEntry ::=
       SEQUENCE {
           phivDDCMPCircuitIndex
               INTEGER,
           phivDDCMPCircuitAdjNodeAddr
               INTEGER,
           phivDDCMPCircuitTributary
               INTEGER
       }

  phivDDCMPCircuitIndex OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "A unique index value for each known DDCMP circuit.
           This is the same value as phivCircuitIndex."
       ::= { phivDDCMPCircuitParametersEntry 1 }

  phivDDCMPCircuitAdjNodeAddr OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The address of the adjacent node."
       ::= { phivDDCMPCircuitParametersEntry 2 }

  phivDDCMPCircuitTributary OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the Data Link physical tributary
           address of the circuit."
       ::= { phivDDCMPCircuitParametersEntry 3 }

  -- DDCMP Circuit Counter Table

  phivDDCMPCircuitCountTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivDDCMPCircuitCountEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION



DECnet Phase IV MIB Working Group                              [Page 34]

RFC 1559                  DECnet Phase IV MIB              December 1993


           "Information about the DDCMP counters associated with all
           circuits currently known."
       ::= { ddcmp 2 }

  phivDDCMPCircuitCountEntry OBJECT-TYPE
       SYNTAX PhivDDCMPCircuitCountEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Counter information about DDCMP circuits now known"
       INDEX     { phivCircuitIndex }
       ::= { phivDDCMPCircuitCountTable 1 }

  PhivDDCMPCircuitCountEntry ::=
       SEQUENCE {
           phivDDCMPCircuitErrorsInbd
               PhivCounter,
           phivDDCMPCircuitErrorsOutbd
               PhivCounter,
           phivDDCMPCircuitRmteReplyTimeouts
               PhivCounter,
           phivDDCMPCircuitLocalReplyTimeouts
               PhivCounter,
           phivDDCMPCircuitRmteBuffErrors
               PhivCounter,
           phivDDCMPCircuitLocalBuffErrors
               PhivCounter,
           phivDDCMPCircuitSelectIntervalsElap
               PhivCounter,
           phivDDCMPCircuitSelectTimeouts
               PhivCounter
       }

  phivDDCMPCircuitErrorsInbd OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of Data errors inbound."
       ::= { phivDDCMPCircuitCountEntry 1 }

  phivDDCMPCircuitErrorsOutbd OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of outbound data errors."
       ::= { phivDDCMPCircuitCountEntry 2 }



DECnet Phase IV MIB Working Group                              [Page 35]

RFC 1559                  DECnet Phase IV MIB              December 1993



  phivDDCMPCircuitRmteReplyTimeouts OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of remote reply timeouts."
       ::= { phivDDCMPCircuitCountEntry 3 }

  phivDDCMPCircuitLocalReplyTimeouts OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of local Reply timeouts."
       ::= { phivDDCMPCircuitCountEntry 4 }

  phivDDCMPCircuitRmteBuffErrors OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of remote reply time out errors."
       ::= { phivDDCMPCircuitCountEntry 5 }

  phivDDCMPCircuitLocalBuffErrors  OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of local buffer errors."
       ::= { phivDDCMPCircuitCountEntry 6 }

  phivDDCMPCircuitSelectIntervalsElap OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Selection intervals that have elapsed."
       ::= {phivDDCMPCircuitCountEntry 7 }

  phivDDCMPCircuitSelectTimeouts OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of selection timeouts."
       ::= {phivDDCMPCircuitCountEntry 8 }



DECnet Phase IV MIB Working Group                              [Page 36]

RFC 1559                  DECnet Phase IV MIB              December 1993



  -- DDCMP Line Count Table

  phivDDCMPLineCountTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivDDCMPLineCountEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "The DDCMP Line Count Table."
       ::= { ddcmp 3 }

  phivDDCMPLineCountEntry OBJECT-TYPE
       SYNTAX PhivDDCMPLineCountEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "There is one entry in the table for each line."
       INDEX  { phivDDCMPLineCountIndex }
       ::= { phivDDCMPLineCountTable 1 }

  PhivDDCMPLineCountEntry ::=
       SEQUENCE {
           phivDDCMPLineCountIndex
               InterfaceIndex,
           phivDDCMPLineCountDataErrsIn
               PhivCounter,
           phivDDCMPLineCountRmteStationErrs
               PhivCounter,
           phivDDCMPLineCountLocalStationErrs
               PhivCounter
       }

  phivDDCMPLineCountIndex OBJECT-TYPE
       SYNTAX InterfaceIndex
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The line on which this entry's equivalence is
           effective. The interface identified by a particular
           value of this index is the same interface as
           identified by the same value of phivLineIndex.
           This value is the ifIndex."
       ::= { phivDDCMPLineCountEntry 1 }

  phivDDCMPLineCountDataErrsIn OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory



DECnet Phase IV MIB Working Group                              [Page 37]

RFC 1559                  DECnet Phase IV MIB              December 1993


       DESCRIPTION
           "Number of data errors inbound."
       ::= { phivDDCMPLineCountEntry 2 }

  phivDDCMPLineCountRmteStationErrs OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of remote station errors."
       ::= { phivDDCMPLineCountEntry 3 }

  phivDDCMPLineCountLocalStationErrs OBJECT-TYPE
       SYNTAX PhivCounter (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
            "Number of local station errors."
       ::= { phivDDCMPLineCountEntry 4 }

  -- DDCMP Multipoint Circuit Control Group

  -- The implementation of the DDCMP Multipoint Circuit Control
  -- Group is optional.  A system can be said to implement this group
  -- if and only if all objects in this group are implemented.

  phivControlSchedTimer OBJECT-TYPE
       SYNTAX INTEGER (50..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the number of milliseconds
           between recalculation of tributary polling priorities."
       DEFVAL { 200 }
       ::= { control 1 }

  phivControlDeadTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the number of milliseconds
           between polls of one of the set of dead
           tributaries."
       DEFVAL { 10000 }
       ::= { control 2 }

  phivControlDelayTimer OBJECT-TYPE



DECnet Phase IV MIB Working Group                              [Page 38]

RFC 1559                  DECnet Phase IV MIB              December 1993


       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the minimum number of
           milliseconds to delay between polls. The delay timer
           limits the effect of a very fast control station on
           slow tributaries."
       ::= { control 3 }

  phivControlStreamTimer OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the number of milliseconds a
           tributary or a half duplex remote station is
           allowed to hold the line.

           NOTE: This parameter can also be applied to
           half-duplex lines of type DDCMP POINT."
       DEFVAL { 6000 }
       ::= { control 4 }

  -- DDCMP Multipoint Circuit Control Parameters Table

  phivControlParametersTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivControlParametersEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about control circuit parameters."
       ::= { control 5 }

  phivControlParametersEntry OBJECT-TYPE
       SYNTAX PhivControlParametersEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Parameters information about control circuits
           currently known."
       INDEX  { phivControlCircuitIndex }
       ::= { phivControlParametersTable 1 }

  PhivControlParametersEntry ::=
       SEQUENCE {
           phivControlCircuitIndex
               INTEGER,



DECnet Phase IV MIB Working Group                              [Page 39]

RFC 1559                  DECnet Phase IV MIB              December 1993


           phivControlBabbleTimer
               INTEGER,
           phivControlMaxBuffs
               INTEGER,
           phivControlMaxTransmits
               INTEGER,
           phivControlDyingBase
               INTEGER,
           phivControlDyingIncrement
               INTEGER,
           phivControlDeadThreshold
               INTEGER,
           phivControlDyingThreshold
               INTEGER,
           phivControlInactTreshold
               INTEGER,
           phivControlPollingState
               INTEGER,
           phivControlPollingSubState
               INTEGER,
           phivControlTransTimer
               INTEGER
       }

  phivControlCircuitIndex OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "A unique index value for each known multipoint
           control circuit.
           This is the same value as phivCircuitIndex."
       ::= { phivControlParametersEntry 1 }

  phivControlBabbleTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the number of milliseconds that a
           selected tributary or remote half-duplex station is
           allowed to transmit."
       DEFVAL { 6000 }
       ::= { phivControlParametersEntry 2 }

  phivControlMaxBuffs  OBJECT-TYPE
       SYNTAX INTEGER (1..254)
       ACCESS read-write



DECnet Phase IV MIB Working Group                              [Page 40]

RFC 1559                  DECnet Phase IV MIB              December 1993


       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum number of buffers the
           tributary can use from a common buffer pool. If not
           set, there is no common buffer pool and buffers are
           explicitly supplied by the higher level. Count is a
           decimal integer in the range 1-254."
       ::= { phivControlParametersEntry 3 }

  phivControlMaxTransmits  OBJECT-TYPE
       SYNTAX INTEGER (1..255)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum number of data
           messages that can be transmitted at one time. Count
           is a decimal integer in the range 1-255."
       DEFVAL { 4 }
       ::= { phivControlParametersEntry 4 }

  phivControlDyingBase OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the base priority to which a
           tributary is reset each time it has been polled. A
           separate base can be set for each of the indicated
           polling states. Base is a decimal integer in the range
           0-255.  If not set, the defaults are: active, 255;
           inactive, 0; and dying, 0."
       ::= { phivControlParametersEntry 5 }

  phivControlDyingIncrement OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the increment added to the
           tributary priority each time the scheduling timer
           expires.  If not set, the defaults are: active, 0;
           inactive, 64; and dying, 16."
       ::= { phivControlParametersEntry 6 }

  phivControlDeadThreshold OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-write
       STATUS mandatory



DECnet Phase IV MIB Working Group                              [Page 41]

RFC 1559                  DECnet Phase IV MIB              December 1993


       DESCRIPTION
           "This value represents the number of times to poll the
           active, inactive, or dying tributary before changing
           its polling state to dead because of receive timeouts.
           Count is a decimal integer in the range 0-255."
       DEFVAL { 8 }
       ::= { phivControlParametersEntry 7 }

  phivControlDyingThreshold OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the number of times to poll the
           active or inactive tributary before changing its
           polling state to dying because of receive timeouts.
           Count is a decimal integer in the range 0-255."
       DEFVAL { 2 }
       ::= { phivControlParametersEntry 8 }

  phivControlInactTreshold OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the number of times to poll the
           active tributary before changing its polling state to
           inactive because of no data response. Count is a
           decimal integer in the range
           0-255."
       DEFVAL { 8 }
       ::= { phivControlParametersEntry 9 }

  phivControlPollingState OBJECT-TYPE
       SYNTAX INTEGER {
           automatic (1),
           active (2),
           inactive (3),
           dying (4),
           dead (5)
       }
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the state of the tributary
           relative to the multipoint polling algorithm.  If not
           set the default is AUTOMATIC. The possible states are:




DECnet Phase IV MIB Working Group                              [Page 42]

RFC 1559                  DECnet Phase IV MIB              December 1993


           AUTOMATIC

             The tributary's state is allowed to vary according to
             the operation of the polling algorithm.

           ACTIVE/INACTIVE/DYING/DEAD

             The tributary is locked in the specified state.

            NOTE: These values are incremented by one compared to
            the standard DECnet values in order to maintain
            compliance with RFC 1155."
       ::= { phivControlParametersEntry 10 }

  phivControlPollingSubState OBJECT-TYPE
       SYNTAX INTEGER {
           active (1),
           inactive (2),
           dying (3),
           dead (4)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the tributary's state as
           determined by the polling algorithm.  This applies
           only when the polling state is AUTOMATIC and is
           read-only to Network Management.  Polling-substate is
           one of ACTIVE, INACTIVE, DYING, or DEAD.  It is
           displayed as a tag on the polling state, for example:
           AUTOMATIC-INACTIVE."
       ::= { phivControlParametersEntry 11 }

  phivControlTransTimer OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the number of milliseconds to
           delay between data message transmits. Milliseconds is
           a decimal integer in the range 0-65535."
       DEFVAL { 0 }
       ::= { phivControlParametersEntry 12 }

  -- Ethernet Group

  -- The implementation of the Ethernet Group is mandatory
  -- for all systems which support ethernet links.



DECnet Phase IV MIB Working Group                              [Page 43]

RFC 1559                  DECnet Phase IV MIB              December 1993



  -- Ethernet Parameters Table

  phivEthLinkParametersTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivEthLinkParametersEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
            "Information about ethernet link parameters."
       ::= { ethernet 1}

  phivEthLinkParametersEntry OBJECT-TYPE
       SYNTAX PhivEthLinkParametersEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Parameter information about ethernet links currently
           known."
       INDEX     { phivEthLinkIndex }
       ::= { phivEthLinkParametersTable 1 }

  PhivEthLinkParametersEntry ::=
       SEQUENCE {
           phivEthLinkIndex
               INTEGER,
           phivEthDesigRouterNodeAddr
               PhivAddr,
           phivEthMaxRouters
               INTEGER,
           phivEthRouterPri
               INTEGER,
           phivEthHardwareAddr
               OCTET STRING
        }

  phivEthLinkIndex OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The circuit over which this links information is
           collected.  This is the same as phivCircuitIndex."
       ::= { phivEthLinkParametersEntry 1 }

  phivEthDesigRouterNodeAddr OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS mandatory



DECnet Phase IV MIB Working Group                              [Page 44]

RFC 1559                  DECnet Phase IV MIB              December 1993


       DESCRIPTION
           "This value is the address of the designated router."
       ::= { phivEthLinkParametersEntry 2 }

  phivEthMaxRouters OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This parameter is the maximum number of routers (other
            than the executor itself) allowed on the circuit by
            Routing for circuits that are owned by the executor
            node."
       ::= { phivEthLinkParametersEntry 3 }

  phivEthRouterPri OBJECT-TYPE
       SYNTAX INTEGER (0..127)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This parameter is the priority that this router is to
            have in the selection of designated router for the
            circuit on circuits that are owned by the executor
            node."
       DEFVAL { 64 }
       ::= { phivEthLinkParametersEntry 4 }

  phivEthHardwareAddr OBJECT-TYPE
       SYNTAX OCTET STRING (SIZE (6))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only parameter is the address that is
           associated with the line device hardware as seen by
           the DECnet Software.  This value is not the same as
           ifPhysAddress."
       ::= { phivEthLinkParametersEntry 5 }

  -- Counters Group

  -- The implementation of the Counters Group is optional.
  -- A system can be said to implement this group if and only if
  -- all objects in this group are implemented.

  -- Counters Table

  phivCountersCountTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivCountersCountEntry



DECnet Phase IV MIB Working Group                              [Page 45]

RFC 1559                  DECnet Phase IV MIB              December 1993


       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Information about ethernet link counters."
       ::= { counters 1 }

  phivCountersCountEntry OBJECT-TYPE
       SYNTAX PhivCountersCountEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Counter information about ethernet links currently
           known."
       INDEX     { phivCountersIndex }
       ::= { phivCountersCountTable 1 }

  PhivCountersCountEntry ::=
       SEQUENCE {
           phivCountersIndex
               InterfaceIndex,
           phivCountersCountBytesRecd
               PhivCounter,
           phivCountersCountBytesSent
               PhivCounter,
           phivCountersCountDataBlocksRecd
               PhivCounter,
           phivCountersCountDataBlocksSent
               PhivCounter,
           phivCountersCountEthUsrBuffUnav
               PhivCounter,
           phivCountersCountMcastBytesRecd
               PhivCounter,
           phivCountersCountDataBlksRecd
               PhivCounter,
           phivCountersCountDataBlksSent
               PhivCounter,
           phivCountersCountMcastBlksRecd
               PhivCounter,
           phivCountersCountBlksSentDef
               PhivCounter,
           phivCountersCountBlksSentSingleCol
               PhivCounter,
           phivCountersCountBlksSentMultCol
               PhivCounter,
           phivCountersCountSendFailure
               PhivCounter,
           phivCountersCountCollDetectFailure
               PhivCounter,



DECnet Phase IV MIB Working Group                              [Page 46]

RFC 1559                  DECnet Phase IV MIB              December 1993


           phivCountersCountReceiveFailure
               PhivCounter,
           phivCountersCountUnrecFrameDest
               PhivCounter,
           phivCountersCountDataOver
               PhivCounter,
           phivCountersCountSysBuffUnav
               PhivCounter,
           phivCountersCountUsrBuffUnav
               PhivCounter
        }

  phivCountersIndex OBJECT-TYPE
       SYNTAX InterfaceIndex
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The interface to which these counters apply.  This is
           the same interface as identified by the same value of
           phivLineIndex. This value is the ifIndex."
       ::= { phivCountersCountEntry 1 }

  phivCountersCountBytesRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of bytes received over this link."
       ::= { phivCountersCountEntry 2 }

  phivCountersCountBytesSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of bytes sent over this link."
       ::= { phivCountersCountEntry 3 }

  phivCountersCountDataBlocksRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "Number of data blocks received over this link."
       ::= { phivCountersCountEntry 4 }

  phivCountersCountDataBlocksSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)



DECnet Phase IV MIB Working Group                              [Page 47]

RFC 1559                  DECnet Phase IV MIB              December 1993


       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "Number of data blocks sent over this link."
       ::= { phivCountersCountEntry 5 }

  phivCountersCountEthUsrBuffUnav OBJECT-TYPE
       SYNTAX PhivCounter (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of user buffer unavailable errors over this
           link."
       ::= { phivCountersCountEntry 6 }

  phivCountersCountMcastBytesRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of multicast bytes received over this link."
       ::= { phivCountersCountEntry 7 }

  phivCountersCountDataBlksRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of data blocks received over this link."
       ::= { phivCountersCountEntry 8 }

  phivCountersCountDataBlksSent OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of data blocks sent over this link."
       ::= { phivCountersCountEntry 9 }

  phivCountersCountMcastBlksRecd OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of multicast blocks received over this link."
       ::= { phivCountersCountEntry 10 }

  phivCountersCountBlksSentDef OBJECT-TYPE



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RFC 1559                  DECnet Phase IV MIB              December 1993


       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of blocks sent, initially deferred over this
           link."
       ::= { phivCountersCountEntry 11 }

  phivCountersCountBlksSentSingleCol OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of blocks sent, single collision over this link."
       ::= { phivCountersCountEntry 12 }

  phivCountersCountBlksSentMultCol OBJECT-TYPE
       SYNTAX PhivCounter (0..2147483647)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of blocks sent, multiple collisions over this
           link."
       ::= { phivCountersCountEntry 13 }

  phivCountersCountSendFailure OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of send failures over this link."
       ::= { phivCountersCountEntry 14 }

  phivCountersCountCollDetectFailure OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of collision detect check failures over this
            link."
       ::= { phivCountersCountEntry 15 }

  phivCountersCountReceiveFailure OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of receive failures over this link."



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RFC 1559                  DECnet Phase IV MIB              December 1993


       ::= { phivCountersCountEntry 16 }

  phivCountersCountUnrecFrameDest OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of unrecognized frame destinations over this
           link."
       ::= { phivCountersCountEntry 17 }

  phivCountersCountDataOver OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of data overruns over this link."
       ::= { phivCountersCountEntry 18 }

  phivCountersCountSysBuffUnav OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of system buffer unavailables over this link."
       ::= { phivCountersCountEntry 19 }

  phivCountersCountUsrBuffUnav OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Number of user buffer unavailables."
       ::= { phivCountersCountEntry 20 }

  -- Adjacency Group

  -- The implementation of the Adjacency Group is mandatory for all
  -- conformant implementations of this memo.

  -- The phivAdjTable has been made obsolete it has been replaced with
  -- the phivAdjNodeTable.

  phivAdjTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivAdjEntry
       ACCESS not-accessible
       STATUS obsolete
       DESCRIPTION



DECnet Phase IV MIB Working Group                              [Page 50]

RFC 1559                  DECnet Phase IV MIB              December 1993


           "The Adjacency Table."
       ::= { adjacency 1 }

  phivAdjEntry OBJECT-TYPE
       SYNTAX PhivAdjEntry
       ACCESS not-accessible
       STATUS obsolete
       DESCRIPTION
           "There is one entry in the table for each adjacency."
       INDEX  { phivAdjCircuitIndex }
       ::= { phivAdjTable 1 }

  PhivAdjEntry ::=
       SEQUENCE {
           phivAdjCircuitIndex
               INTEGER,
           phivAdjNodeAddr
               PhivAddr,
           phivAdjBlockSize
               INTEGER,
           phivAdjListenTimer
               INTEGER (1..65535),
           phivAdjCircuitEtherServPhysAddr
               OCTET STRING,
           phivAdjType
               INTEGER,
           phivAdjState
               INTEGER,
           phivAdjPriority
               INTEGER,
           phivAdjExecListenTimer
               INTEGER (1..65535)
        }
  phivAdjCircuitIndex OBJECT-TYPE
       SYNTAX INTEGER
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "A unique index value for each known circuit."
       ::= { phivAdjEntry 1 }

  phivAdjNodeAddr OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "The address of the adjacent node."
       ::= { phivAdjEntry 2 }



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RFC 1559                  DECnet Phase IV MIB              December 1993



  phivAdjBlockSize OBJECT-TYPE
       SYNTAX INTEGER
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "This read-only parameter is the block size that was
           negotiated with the adjacent Routing layer during Routing
           initialization over a particular circuit. It includes the
           routing header, but excludes the data link header. This
           parameter is qualified by ADJACENT NODE."
       ::= { phivAdjEntry 3 }

  phivAdjListenTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "This value determines the maximum number of seconds
           allowed to elapse before Routing receives some message
           (either a Hello message or a user message) from the
           adjacent node on the circuit. It was agreed during
           Routing initialization with the adjacent Routing layer.
           This parameter is qualified by ADJACENT NODE."
       ::= { phivAdjEntry 4 }

  phivAdjCircuitEtherServPhysAddr OBJECT-TYPE
       SYNTAX OCTET STRING ( SIZE (6) )
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "This parameter indicates the Ethernet physical address
           of an adjacent node that is being serviced on this
           circuit. This parameter is a qualifier for SERVICE
           SUBSTATE."
       ::= { phivAdjEntry 5 }

  phivAdjType OBJECT-TYPE
       SYNTAX INTEGER {
           routing-III (1),
           nonrouting-III (2),
           area (3),
           routing-IV (4),
           nonrouting-IV (5)
       }
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION



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RFC 1559                  DECnet Phase IV MIB              December 1993


           "This parameter indicates the type of adjacency.

           For adjacent nodes, this is a read-only parameter that
           indicates the type of the reachable adjacent node.
           NOTE: The routing-III and nonrouting-III values are
           incremented by one compared to the standard DECnet
           values in order to maintain compliance with RFC 1155)"
       ::= { phivAdjEntry 6 }

  phivAdjState OBJECT-TYPE
       SYNTAX INTEGER {
           initializing (1),          -- Ethernet one-way
           up (2),                    -- Ethernet two-way
           run (3),                   -- The eight DDCMP/X.25 states
           circuit-rejected (4),
           data-link-start (5),
           routing-layer-initialize (6),
           routing-layer-verify (7),
           routing-layer-complete (8),
           off (9),
           halt (10)
       }
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "This value indicates the state of a router adjacency.
           On adjacencies over a circuit of type
           (phivCircuitCommonType) Ethernet, CI, or FDDI, with an
           adjacent node of type (phivAdjType) ROUTING IV or AREA,
           this variable is the state of the Ethernet
           Initialization Layer for this adjacency, and can have
           values INITIALIZING or UP. (See Section 9.1.1 of
           DECnet Phase IV Routing Layer Functional Specification.)

           On adjacencies over a circuit of type
           (phivCircuitCommonType) Ethernet, CI, or FDDI, with an
           adjacent node of type (phivAdjType) NONROUTING IV,
           this variable will always take on the value UP.

           On adjacencies over a circuit of type
           (phivCircuitCommonType) DDCMP POINT, DDCMP CONTROL,
           DDCMP TRIBUTARY, DDCMP DMC, or X.25, this variable is
           the state of the Routing Layer Initialization Circuit
           State. (See section 7.3, ibid.)  It can have values
           between RUN and HALT.

           On adjacencies over a circuit of type
           (phivCircuitCommonType) OTHER, this variable may be



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RFC 1559                  DECnet Phase IV MIB              December 1993


           used in a manner consistent with the Initialization
           Layer used on that circuit."
       ::= { phivAdjEntry 7 }

  phivAdjPriority OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "Priority assigned by the adjacent node for this
           circuit."
    ::= { phivAdjEntry 8 }

  phivAdjExecListenTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS obsolete
       DESCRIPTION
           "This read-only value determines the maximum number of
           seconds allowed to elapse before Routing receives some
           message (either a Hello message or a user message) from
           the adjacent node on the circuit. It was agreed during
           Routing initialization with the adjacent Routing layer."
       ::= { phivAdjEntry 9 }

  -- New Adjacency Table this replaces the phivAdjTable.

  phivAdjNodeTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivAdjNodeEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "The Adjacent Node Table."
       ::= { adjacency 2 }

  phivAdjNodeEntry OBJECT-TYPE
       SYNTAX PhivAdjNodeEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "There is one entry in the table for each adjacency."
       INDEX  { phivAdjNodeCircuitIndex, phivAdjAddr }
       ::= { phivAdjNodeTable 1 }

  PhivAdjNodeEntry ::=
       SEQUENCE {
           phivAdjNodeCircuitIndex
               INTEGER,



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RFC 1559                  DECnet Phase IV MIB              December 1993


           phivAdjAddr
               PhivAddr,
           phivAdjNodeBlockSize
               INTEGER,
           phivAdjNodeListenTimer
               INTEGER,
           phivAdjNodeCircuitEtherServPhysAddr
               OCTET STRING,
           phivAdjNodeType
               INTEGER,
           phivAdjNodeState
               INTEGER,
           phivAdjNodePriority
               INTEGER
        }

  phivAdjNodeCircuitIndex OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "A unique index value for each known circuit.  This
           value is the same as phivCircuitIndex and identifies the
           circuit over which the adjacency is realized."
       ::= { phivAdjNodeEntry 1 }

  phivAdjAddr OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The address of the adjacent node."
       ::= { phivAdjNodeEntry 2 }

  phivAdjNodeBlockSize OBJECT-TYPE
       SYNTAX INTEGER
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This read-only parameter is the block size that was
           negotiated with the adjacent Routing layer during Routing
           initialization over a particular circuit. It includes the
           routing header, but excludes the data link header. This
           parameter is qualified by ADJACENT NODE."
       ::= { phivAdjNodeEntry 3 }

  phivAdjNodeListenTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)



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RFC 1559                  DECnet Phase IV MIB              December 1993


       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value determines the maximum number of seconds
           allowed to elapse before Routing receives some message
           (either a Hello message or a user message) from the
           adjacent node on the circuit. It was agreed during
           Routing initialization with the adjacent Routing layer.
           This parameter is qualified by ADJACENT NODE."
       ::= { phivAdjNodeEntry 4 }

  phivAdjNodeCircuitEtherServPhysAddr OBJECT-TYPE
       SYNTAX OCTET STRING (SIZE (6))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This parameter indicates the Ethernet physical address
           of an adjacent node that is being serviced on this
           circuit. This parameter is a qualifier for SERVICE
           SUBSTATE."
       ::= { phivAdjNodeEntry 5 }

  phivAdjNodeType OBJECT-TYPE
       SYNTAX INTEGER {
           routing-III (1),
           nonrouting-III (2),
           area (3),
           routing-IV (4),
           nonrouting-IV (5)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This parameter indicates the type of adjacency.

           For adjacent nodes, this is a read-only parameter that
           indicates the type of the reachable adjacent node.
           NOTE: The routing-III and nonrouting-III values are
           incremented by one compared to the standard DECnet
           values in order to maintain compliance with RFC 1155)"
       ::= { phivAdjNodeEntry 6 }

  phivAdjNodeState OBJECT-TYPE
       SYNTAX INTEGER {
           initializing (1),          -- Ethernet one-way
           up (2),                    -- Ethernet two-way
           run (3),                   -- The eight DDCMP/X.25 states
           circuit-rejected (4),



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RFC 1559                  DECnet Phase IV MIB              December 1993


           data-link-start (5),
           routing-layer-initialize (6),
           routing-layer-verify (7),
           routing-layer-complete (8),
           off (9),
           halt (10)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value indicates the state of a router adjacency.
           On adjacencies over a circuit of type
           (phivCircuitCommonType) Ethernet, CI, or FDDI, with an
           adjacent node of type (phivAdjNodeType) ROUTING IV or AREA,
           this variable is the state of the Ethernet
           Initialization Layer for this adjacency, and can have
           values INITIALIZING or UP. (See Section 9.1.1 of
           DECnet Phase IV Routing Layer Functional Specification.)

           On adjacencies over a circuit of type
           (phivCircuitCommonType) Ethernet, CI, or FDDI, with an
           adjacent node of type (phivAdjNodeType) NONROUTING IV,
           this variable will always take on the value UP.

           On adjacencies over a circuit of type
           (phivCircuitCommonType) DDCMP POINT, DDCMP CONTROL,
           DDCMP TRIBUTARY, DDCMP DMC, or X.25, this variable is
           the state of the Routing Layer Initialization Circuit
           State. (See section 7.3, ibid.)  It can have values
           between RUN and HALT.

           On adjacencies over a circuit of type
           (phivCircuitCommonType) OTHER, this variable may be
           used in a manner consistent with the Initialization
           Layer used on that circuit."
       ::= { phivAdjNodeEntry 7 }

  phivAdjNodePriority OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "Priority assigned by the adjacent node for this
           circuit."
          ::= { phivAdjNodeEntry 8 }






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RFC 1559                  DECnet Phase IV MIB              December 1993


  -- Line Group

  -- The implementation of the Line Group is mandatory for all
  -- conformant implementations of this memo.

  phivLineTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivLineEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "The Line Table."
       ::= { line 1 }

  phivLineEntry OBJECT-TYPE
       SYNTAX PhivLineEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "There is one entry in the table for each line."
       INDEX  { phivLineIndex }
       ::= { phivLineTable 1 }

  PhivLineEntry ::=
       SEQUENCE {
           phivLineIndex
               InterfaceIndex,
           phivLineName
               DisplayString,
           phivLineState
               INTEGER,
           phivLineSubstate
               INTEGER,
           phivLineService
               INTEGER,
           phivLineDevice
               DisplayString,
           phivLineReceiveBuffs
               INTEGER,
           phivLineProtocol
               INTEGER,
           phivLineServiceTimer
               INTEGER,
           phivLineMaxBlock
               INTEGER
       }

  phivLineIndex OBJECT-TYPE
       SYNTAX InterfaceIndex



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RFC 1559                  DECnet Phase IV MIB              December 1993


       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The line on which this entry's equivalence is effective.
           This is the same as the ifIndex."
       ::= { phivLineEntry 1 }

  phivLineName OBJECT-TYPE
       SYNTAX DisplayString (SIZE (0..16))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The name of the line on this row of the table."
       ::= { phivLineEntry 2 }

  phivLineState OBJECT-TYPE
       SYNTAX INTEGER {
           on (1),
           off (2),
           service (3),
           cleared (4)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents Network Management operational
           state.
           NOTE that these values are incremented by one compared to
           the standard DECnet values."
       ::= { phivLineEntry 3 }

  phivLineSubstate OBJECT-TYPE
       SYNTAX INTEGER {
           starting (1),
           reflecting (2),
           looping (3),
           loading (4),
           dumping (5),
           triggering (6),
           auto-service (7),
           auto-loading (8),
           auto-dumping (9),
           auto-triggering (10),
           synchronizing (11),
           failed (12),
           running (13)
       }
       ACCESS read-only



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       STATUS mandatory
       DESCRIPTION
           "This value represents the line's read-only Network
           Management substate.
           NOTE that these values are incremented by one compared to
           the standard DECnet values."
       ::= { phivLineEntry 4 }

  phivLineService OBJECT-TYPE
       SYNTAX INTEGER {
           starting (1),
           reflecting (2),
           looping (3),
           other (4)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the line's read-only Network
           Management service.
           NOTE that these values are incremented by one compared to
           the standard DECnet values and OTHER is a new addition."
       ::= { phivLineEntry 5 }

  phivLineDevice OBJECT-TYPE
       SYNTAX DisplayString (SIZE (0..16))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the Physical Link device to be
           used on the line."
       ::= { phivLineEntry 6 }

  phivLineReceiveBuffs OBJECT-TYPE
       SYNTAX INTEGER (0..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the number of receive buffers
           reserved for the line. It is a decimal number in
           the range 0-65535.  0 is supported for those vendors
           that do not reserve buffers on a per line basis and
           use a pool of buffers that can be used by any line."
       ::= { phivLineEntry 7 }

  phivLineProtocol OBJECT-TYPE
       SYNTAX INTEGER {
           ddcmp-point (1),



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           ddcmp-control (2),
           ddcmp-tributary (3),
           reserved (4),
           ddcmp-dmc (5),
           olapb (6),
           ethernet (7),
           ci (8),
           qp2 (9),
           other (14),
           fddi (15)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the protocol used on the line
           device.  Note that these values are incremented by
           one compared to the standard DECnet values."
       ::= { phivLineEntry 8 }

  phivLineServiceTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the amount of time in
           milliseconds allowed to elapse before a Data Link
           receive request completes while doing service
           operations."
       ::= { phivLineEntry 9 }

  phivLineMaxBlock OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the Data Link maximum block
           size on the line."
       ::= { phivLineEntry 10 }

  -- Non Broadcast Line Group

  -- The implementation of the Non Broadcast Line Group is optional.
  -- A system can be said to implement this group if and only if
  -- all objects in this group are implemented.

  phivNonBroadcastTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivNonBroadcastEntry
       ACCESS not-accessible



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       STATUS mandatory
       DESCRIPTION
           "The Non Broadcast Table."
       ::= { nonBroadcastLine 1 }

  phivNonBroadcastEntry OBJECT-TYPE
       SYNTAX PhivNonBroadcastEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "There is one entry in the table for each
           Non Broadcast line."
       INDEX  { phivNonBroadcastIndex }
       ::= { phivNonBroadcastTable 1 }

  PhivNonBroadcastEntry ::=
       SEQUENCE {
           phivNonBroadcastIndex
               InterfaceIndex,
           phivNonBroadcastController
               INTEGER,
           phivNonBroadcastDuplex
               INTEGER,
           phivNonBroadcastClock
               INTEGER,
           phivNonBroadcastRetransmitTimer
               INTEGER
       }

  phivNonBroadcastIndex OBJECT-TYPE
       SYNTAX InterfaceIndex
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The Non Broadcast line on which this entry's
           equivalence is effective.  This is the same value
           as the ifIndex."
       ::= { phivNonBroadcastEntry 1 }

  phivNonBroadcastController OBJECT-TYPE
       SYNTAX INTEGER {
           normal (1),
           loopback (2),
           other (3)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION



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           "This value represents the Physical Link hardware
           controller mode for the line device. The values
           for controller-mode are:

           NORMAL  For normal controller operating mode.

           LOOPBACK For software controllable loopback of the
           controller. On those devices that can support this
           mode, it causes all transmitted messages to be looped
           back from within the controller itself. This is
           accomplished without any manual intervention other
           than the setting of this parameter value.

           OTHER indicates function is not supported
           Note that these values are incremented by one compared to
           the standard DECnet values."
       ::= { phivNonBroadcastEntry 2 }

  phivNonBroadcastDuplex OBJECT-TYPE
       SYNTAX INTEGER {
           full (1),
           half (2)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the Physical Link hardware
           duplex mode of the line device. The possible modes
           are:

           FULL   Full-duplex
           HALF   Half-duplex

           Note that these values are incremented by one compared to
           the standard DECnet values."
       ::= { phivNonBroadcastEntry 3 }

  phivNonBroadcastClock OBJECT-TYPE
       SYNTAX INTEGER {
           external (1),
           internal (2),
           other (3)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents the Physical Link hardware clock
           mode for the line device. The values for clock-mode are:



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           INTERNAL For software controllable loopback use of
           the clock. On those devices that can support this
           mode, it causes the device to supply a clock signal
           such that a transmitted messages can be looped
           back from outside the device. This may require manual
           intervention other than the setting of this parameter
           value. For example, the operator may have to connect
           a loopback plug in place of the normal line.

           EXTERNAL For normal clock operating mode, where the
           clock signal is supplied externally to the controller.
           Note that these values are incremented by one compared to
           the standard DECnet values."
       ::= { phivNonBroadcastEntry 4 }

  phivNonBroadcastRetransmitTimer OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value represents number of milliseconds before
           the Data Link retransmits a block on the line. On
           half-duplex lines, this parameter is the select timer."
       DEFVAL { 3000 }
       ::= { phivNonBroadcastEntry 5 }

  -- Area Parameters Group

  -- The implementation of the Area Parameters Group is mandatory
  -- for all systems which implement level 2 routing.

  phivAreaTable OBJECT-TYPE
       SYNTAX SEQUENCE OF PhivAreaEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "Table of information kept on all areas known to
           this unit."
       ::= { area 1 }

  phivAreaEntry OBJECT-TYPE
       SYNTAX PhivAreaEntry
       ACCESS not-accessible
       STATUS mandatory
       DESCRIPTION
           "The area routing information."
       INDEX  { phivAreaNum }



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       ::= { phivAreaTable 1 }

  PhivAreaEntry ::=
       SEQUENCE {
           phivAreaNum
               INTEGER,
           phivAreaState
               INTEGER,
           phivAreaCost
               Gauge,
           phivAreaHops
               INTEGER,
           phivAreaNextNode
               PhivAddr,
           phivAreaCircuitIndex
              INTEGER
       }

  phivAreaNum OBJECT-TYPE
       SYNTAX INTEGER (0..64)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value indicates the area number of this entry."
       ::= { phivAreaEntry 1 }

  phivAreaState OBJECT-TYPE
       SYNTAX INTEGER {
           reachable (4),
           unreachable (5)
       }
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "This value indicates the state of the area"
       ::= { phivAreaEntry 2 }

  phivAreaCost OBJECT-TYPE
       SYNTAX Gauge
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The total cost over the current path to the
            destination area. Cost is a value associated with
            using a circuit. Routing routes messages (data)
            along the path between 2 areas with the smallest
            cost."
       ::= { phivAreaEntry 3 }



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RFC 1559                  DECnet Phase IV MIB              December 1993



  phivAreaHops OBJECT-TYPE
       SYNTAX INTEGER (0..255)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The number of hops to a destination area. A hop is
           the routing value representing the logical distance
           between two areas in network."
       ::= { phivAreaEntry 4 }

  phivAreaNextNode OBJECT-TYPE
       SYNTAX PhivAddr -- OCTET STRING (SIZE (2))
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "The next node on the circuit used to get to the
           area under scrutiny."
       ::= { phivAreaEntry 5 }

  phivAreaCircuitIndex OBJECT-TYPE
       SYNTAX INTEGER (1..65535)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
           "A unique index value for each known circuit."
       ::= { phivAreaEntry 6 }

  -- Additional Area Parameters

  phivAreaMaxCost OBJECT-TYPE
       SYNTAX INTEGER (1..1022)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum total path cost
           allowed from the executor to any other level 2 routing
           node. The AREA MAXIMUM COST number is decimal in the
           range 1-1022. This parameter is only applicable if
           the executor node is of type AREA."
       ::= { area 2 }

  phivAreaMaxHops OBJECT-TYPE
       SYNTAX INTEGER (1..30)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the maximum number of routing hops



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           allowable from the executor to any other level 2
           routing node.  This parameter is only applicable if the
           executor node is of type AREA."
       ::= { area 3 }

  phivRouteMaxArea OBJECT-TYPE
       SYNTAX INTEGER (1..63)
       ACCESS read-write
       STATUS mandatory
       DESCRIPTION
           "This value represents the largest area number and,
           therefore, number of areas that can be known about
           by the executor node's Routing. This parameter is only
           applicable if the executor node is of type AREA."
       ::= { area 4 }

         END

6.  Changes from RFC 1289

  Several changes have been made to this document.  These changes
  include:

  (1)  Ranges have been added on all PhivCounter types to remove
       ambiguity which might otherwise have occurred.

  (2)  Made clear that all indexes start with 1 and count up.

  (3)  Spelling and typographic changes.

  (4)  Changes to improve consistency with other documents including
       the removal of subranging within definitions of sequences
       defining table entries.

  (5)  Updated compliance text to conform to current practice.

  (6)  Fixed discrepancy between description and range clause for
       phivControlMaxBuffs.

  (7)  Added a space that was missing between SYNTAX and INTEGER in the
       phivRouteType object.

  (8)  Both phivRouteType and phivRouteSystemAddr have been made
       obsolete.  They have been replaced with phivRouteRoutingType
       and phivRouteSystemAddress which are both read-write objects.






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  (9)  A new Adjacency table has been added as adjacency 2.  This
       table is identical to the original except that
       phivAdjExecListenTimer was not carried into the new version.
       The existing Adjacency table and all objects in it have been
       made obsolete.  The index to the new table is
       phivAdjNodeCircuitIndex and phivAdjAddr.

  (10) Objects phivCountersCountDataBlocksRecd and
       phivCountersCountDataBlocksSent have both been made obsolete
       since the DESCRIPTION information overlapped with the
       phivCountersCountDataBlksRecd and
       phivCountersCountDataBlksSent objects which have been
       retained.

  (11) The following groups have been moved from mandatory to
       optional status: Session, End, DDCMP, DDCMP Multipoint
       Circuit Control, Counters, and Non Broadcast Line.

7.  Acknowledgements

  This document is the result of work undertaken the by DECnet Phase IV
  MIB working group. In addition, the special contributions and
  comments of the following members are also acknowledged:

        Chris Chiotasso, Sparticus

        Steven Hunter, National Energy Research Supercomputer Center,
        Lawrence Livermore National Laboratory

8.  References

  [1] Cerf, V., "IAB Recommendations for the Development of Internet
      Network Management Standards", RFC 1052, NRI, April 1988.

  [2] Rose M., and K. McCloghrie, "Structure and Identification of
      Management Information for TCP/IP-based internets", STD 16, RFC
      1155, Performance Systems International, Hughes LAN Systems, May
      1990.

  [3] McCloghrie K., and M. Rose, Editors, "Management Information Base
      for Network Management of TCP/IP-based internets MIB-II", STD 17,
      RFC 1213, Hughes LAN Systems, Performance Systems International,
      March 1991.

  [4] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
      Network Management Protocol", STD 15, RFC 1157, SNMP Research,
      Performance Systems International, Performance Systems
      International, MIT Laboratory for Computer Science, May 1990.



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RFC 1559                  DECnet Phase IV MIB              December 1993


  [5] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
      STD 16, RFC 1212, Performance Systems International, Hughes LAN
      Systems, March 1991.

  [6] Cook, J., Editor, "Definitions of Managed Objects for the
      Ethernet-like Interface Types", RFC 1284, Chipcom Corporation,
      December 1991.

  [7] Digital Equipment Corporation, "DECnet-ULTRIX NCP Command
      Reference", Digital Equipment Corporation, Maynard,
      Massachusetts.

  [8] Digital Equipment Corporation, "DECnet-ULTRIX USE Guide", Digital
      Equipment Corporation, Maynard, Massachusetts.

  [9] Digital Equipment Corporation, "DECnet DIGITAL Network
      Architecture, Network Management Functional Specification",
      Version 4.0.0. Digital Equipment Corporation, Maynard,
      Massachusetts, July 1983.

 [10] Digital Equipment Corporation, "DECnet DIGITAL Network
      Architecture, Routing Layer Functional Specification", Version
      2.0.0.  Digital Equipment Corporation, Maynard, Massachusetts,
      May 1983.

9.  Security Considerations

  Security issues are not discussed in this memo.

10.  Author's Address

  Jon Saperia
  Digital Equipment Corporation
  153 Taylor Street
  M/S TAY2-2/B5
  Littleton, MA 01460

  Phone: +1 508-952-3171
  EMail: [email protected]












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