Network Working Group                                         J. Saperia
Request for Comments: 1289                 Digital Equipment Corporation
                                                          December 1991


                    DECnet Phase IV MIB Extensions

Status of this Memo

  This memo is an extension to the SNMP MIB.  This RFC specifies an IAB
  standards track protocol for the Internet community, and requests
  discussion and suggestions for improvements.  Please refer to the
  current edition of the "IAB Official Protocol Standards" for the
  standardization state and status of this protocol.  Distribution of
  this memo is unlimited.

Table of Contents

  Abstract..........................................................  1
  1. Introduction...................................................  1
  2. Selected Objects...............................................  2
  3. Objects........................................................  3
  3.1 Format of Definitions.........................................  3
  3.2 Textual Conventions...........................................  4
  4. Object Definitions.............................................  4
  5. Acknowledgements............................................... 63
  6. References..................................................... 63
  7. Security Considerations........................................ 64
  8. Author's Address............................................... 64

Abstract

  This memo defines a set of DECnet Phase IV extensions that have been
  created for the Internet MIB.  When used in conjunction with the
  structure of management information (RFC 1155), the management
  information base for network management of TCP/IP-based internets
  (RFC 1213) and the Simple Network Management Protocol (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).

1.  Introduction

  With the adoption of The Simple Network Management Protocol (RFC
  1157), the management information base for network management of
  TCP/IP-based internets (RFC 1213), and the structure of management
  information (RFC 1155), by the Internet, and a large number of vendor



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  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.  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:

    o  System Group

    o  Network Management Group

    o  Session Group

    o  End Group

    o  Routing Group

    o  Circuit Group

    o  DDCMP Group

    o  DDCMP Multipoint Control Group

    o  Ethernet Group

    o  Counters Group




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    o  Adjacency Group

    o  Line Group

    o  Non Broadcast Line Group

    o  Area Group

  An effort has also been made to preserve the original syntax of the
  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.

3.  Objects

  All objects in this memo are described using the standard Internet
  SMI and BER of RFC 1155. A complete description of an object will
  include the name, syntax and encoding. Just as with objects supported
  in the MIB (RFC 1156), 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 RFC 1156 -
  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 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.

3.1  Format of Definitions

  An object in this memo is specified by five fields of information:
  Object, Syntax, Definition, Access, and Status.

  The OBJECT is a textual name (OBJECT DESCRIPTOR) for that object type
  combined with an administratively obtained OBJECT IDENTIFIER.

  SYNTAX: For each object type, its abstract syntax is presented using
  the ASN.1 specified in RFC 1155.



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  DEFINITION: A general description of the object type. Its original
  purpose in the DECnet Phase IV environment is given so that all
  implementers and users will consistently interpret the information
  contained in each object type. Changes in format to make the object
  consistent with RFC 1155 are also noted.

  ACCESS: The standard access keywords supported in RFC 1156 are used.
  The keywords used in this MIB are: read-only, read-write, and, not-
  accessible.

  STATUS: The status field is used to describe with a single keyword
  whether the object type is mandatory or optional. Status keywords of
  obsolete and deprecated are not used in this memo since this is the
  first version of the DECnet Phase IV MIB.

3.2  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 4.0 (Object Definitions).

4.  Object Definitions

           RFC1289-phivMIB

           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



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      -- 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 restared, or they are reset to zero by the user
      -- or management software.

      -- 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



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                           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)."
           ::= { 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 mandatory for
      -- all systems that implement session layer communications.





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      phivSessionSystemName OBJECT-TYPE
          SYNTAX DisplayString ( SIZE (0..6) )
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "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 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 0
              indicates no timer is running."
          ::= { session 3 }

      -- End Communication Layer Group

      -- The implementation of the End Communication Layer Group is
      -- mandatory for all systems that implement end layer
      -- communications.

      -- Remote State Table




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      phivEndRemoteTable OBJECT-TYPE
          SYNTAX SEQUENCE OF PhivEndRemoteEntry
          ACCESS not-accessible
          STATUS mandatory
          DESCRIPTION
              "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 (0..65535)
           }
       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)



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          }
          ACCESS read-write
          STATUS mandatory
          DESCRIPTION
              "This represents the operational state of the remote node
              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
          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



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              delay in seconds to the destination node. This
              parameter is kept on a remote node basis."
          ::= { phivEndRemoteEntry 5 }

      -- End System Counter Table

      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 (0..65535),
              phivEndCountUsrBytesRec
                  PhivCounter,
              phivEndCountUsrBytesSent
                  PhivCounter,
              phivEndUCountUsrMessRec
                  PhivCounter,
              phivEndCountUsrMessSent
                  PhivCounter,
              phivEndCountTotalBytesRec
                  PhivCounter,
              phivEndCountTotalBytesSent
                  PhivCounter,
              phivEndCountTotalMessRec
                  PhivCounter,
              phivEndCountTotalMessSent



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                  PhivCounter,
              phivEndCountConnectsRecd
                  PhivCounter (0..65535),
              phivEndCountConnectsSent
                  PhivCounter (0..65535),
              phivEndCountReponseTimeouts
                  PhivCounter (0..65535),
              phivEndCountRecdConnectResErrs
                  PhivCounter (0..65535)
          }
      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
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "Number of user bytes received from the target host."
          ::= { phivEndCountEntry 3 }

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





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      phivEndUCountUsrMessRec OBJECT-TYPE
           SYNTAX PhivCounter
           ACCESS read-only
           STATUS mandatory
           DESCRIPTION
               "Number of user messages received from the target host."
           ::= { phivEndCountEntry 5 }

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

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

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

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

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




DECnet Phase IV MIB Working Group                              [Page 12]

RFC 1289                  DECnet Phase IV MIB              December 1991


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



DECnet Phase IV MIB Working Group                              [Page 13]

RFC 1289                  DECnet Phase IV MIB              December 1991


          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 }

      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.



DECnet Phase IV MIB Working Group                              [Page 14]

RFC 1289                  DECnet Phase IV MIB              December 1991


              If no activity occurs within the minimum number of
              seconds, End Communication generates artificial
              traffic to test the link (End Communication
              specification)."
          ::= { end 8 }

      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)



DECnet Phase IV MIB Working Group                              [Page 15]

RFC 1289                  DECnet Phase IV MIB              December 1991


          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
               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 }





DECnet Phase IV MIB Working Group                              [Page 16]

RFC 1289                  DECnet Phase IV MIB              December 1991


      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
              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



DECnet Phase IV MIB Working Group                              [Page 17]

RFC 1289                  DECnet Phase IV MIB              December 1991


              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 }

      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 }




DECnet Phase IV MIB Working Group                              [Page 18]

RFC 1289                  DECnet Phase IV MIB              December 1991


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

      phivRouteSegBuffSize OBJECT-TYPE
          SYNTAX INTEGER
          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
          SYNTAXINTEGER {
              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 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



DECnet Phase IV MIB Working Group                              [Page 19]

RFC 1289                  DECnet Phase IV MIB              December 1991


              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 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 }





DECnet Phase IV MIB Working Group                              [Page 20]

RFC 1289                  DECnet Phase IV MIB              December 1991


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

      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



DECnet Phase IV MIB Working Group                              [Page 21]

RFC 1289                  DECnet Phase IV MIB              December 1991


                  PhivAddr,
              phivLevel1RouteCircuitIndex
                  INTEGER,
              phivLevel1RouteCost
                  INTEGER (0..65535),
              phivLevel1RouteHops
                  INTEGER (0..127),
              phivLevel1RouteNextNode
                  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
          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



DECnet Phase IV MIB Working Group                              [Page 22]

RFC 1289                  DECnet Phase IV MIB              December 1991


              "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
          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
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "DECnet Phase IV node address."
          ::= { routing 24 }








DECnet Phase IV MIB Working Group                              [Page 23]

RFC 1289                  DECnet Phase IV MIB              December 1991


      -- 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 }

      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 (0..65535),
              phivCircuitCommonType
                  INTEGER,
              phivCircuitService
                  INTEGER,
              phivCircuitExecCost
                  INTEGER (1..25),
              phivCircuitExecHelloTimer



DECnet Phase IV MIB Working Group                              [Page 24]

RFC 1289                  DECnet Phase IV MIB              December 1991


                  INTEGER (1..8191)
          }
       phivCircuitIndex OBJECT-TYPE
          SYNTAX INTEGER
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "A unique index value for each known circuit."
          ::= { phivCircuitParametersEntry 1 }

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



DECnet Phase IV MIB Working Group                              [Page 25]

RFC 1289                  DECnet Phase IV MIB              December 1991


              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
          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



DECnet Phase IV MIB Working Group                              [Page 26]

RFC 1289                  DECnet Phase IV MIB              December 1991


              "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
          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



DECnet Phase IV MIB Working Group                              [Page 27]

RFC 1289                  DECnet Phase IV MIB              December 1991


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

      PhivCircuitCountEntry ::=
          SEQUENCE {
              phivCircuitCountSecLastZeroed
                  PhivCounter (0..65535),
              phivCircuitCountTermPacketsRecd
                  PhivCounter,
              phivCircuitCountOriginPackSent
                  PhivCounter,
              phivCircuitCountTermCongLoss
                  PhivCounter (0..65535),
              phivCircuitCountCorruptLoss
                  PhivCounter (0..255),
              phivCircuitCountTransitPksRecd
                  PhivCounter,
              phivCircuitCountTransitPkSent
                  PhivCounter,
              phivCircuitCountTransitCongestLoss
                  PhivCounter (0..65535),
              phivCircuitCountCircuitDown
                  PhivCounter (0..255),
              phivCircuitCountInitFailure
                  PhivCounter (0..255),
              phivCircuitCountAdjDown
                  PhivCounter,



DECnet Phase IV MIB Working Group                              [Page 28]

RFC 1289                  DECnet Phase IV MIB              December 1991


              phivCircuitCountPeakAdj
                  PhivCounter,
              phivCircuitCountBytesRecd
                  PhivCounter,
              phivCircuitCountBytesSent
                  PhivCounter,
              phivCircuitCountDataBlocksRecd
                  PhivCounter (0..65535),
              phivCircuitCountDataBlocksSent
                  PhivCounter,
              phivCircuitCountUsrBuffUnav
                  PhivCounter (0..65535)
          }
      phivCircuitCountSecLastZeroed  OBJECT-TYPE
          SYNTAX PhivCounter (0..65535)
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "Number of seconds since the circuit counters for this
              circuit were last zeroed."
          ::= { phivCircuitCountEntry 1 }

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

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

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





DECnet Phase IV MIB Working Group                              [Page 29]

RFC 1289                  DECnet Phase IV MIB              December 1991


      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
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "Number of Transit packets received on this circuit."
          ::= { phivCircuitCountEntry 6 }

      phivCircuitCountTransitPkSent OBJECT-TYPE
          SYNTAX PhivCounter
          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 }




DECnet Phase IV MIB Working Group                              [Page 30]

RFC 1289                  DECnet Phase IV MIB              December 1991


      phivCircuitCountAdjDown OBJECT-TYPE
          SYNTAX PhivCounter
          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."
          ::= { phivCircuitCountEntry 11 }

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

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

      phivCircuitCountDataBlocksRecd OBJECT-TYPE
          SYNTAX PhivCounter
          ACCESS read-only
          STATUS mandatory



DECnet Phase IV MIB Working Group                              [Page 31]

RFC 1289                  DECnet Phase IV MIB              December 1991


          DESCRIPTION
              "Number of data blocks received on this circuit."
          ::= { phivCircuitCountEntry 15 }

      phivCircuitCountDataBlocksSent OBJECT-TYPE
          SYNTAX PhivCounter
          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
              "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 mandatory for
      -- all systems which support DDCMP circuits.



DECnet Phase IV MIB Working Group                              [Page 32]

RFC 1289                  DECnet Phase IV MIB              December 1991



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

      PhivDDCMPCircuitParametersEntry ::=
          SEQUENCE {
              phivDDCMPCircuitIndex
                  INTEGER,
              phivDDCMPCircuitAdjNodeAddr
                  INTEGER (0..65535),
              phivDDCMPCircuitTributary
                  INTEGER (0..255)
          }
      phivDDCMPCircuitIndex OBJECT-TYPE
          SYNTAX INTEGER
          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 }





DECnet Phase IV MIB Working Group                              [Page 33]

RFC 1289                  DECnet Phase IV MIB              December 1991


      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
              "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 (0..255),
              phivDDCMPCircuitErrorsOutbd
                  PhivCounter (0..255),
              phivDDCMPCircuitRmteReplyTimeouts
                  PhivCounter (0..255),
              phivDDCMPCircuitLocalReplyTimeouts
                  PhivCounter (0..255),
              phivDDCMPCircuitRmteBuffErrors
                  PhivCounter (0..255),
              phivDDCMPCircuitLocalBuffErrors
                  PhivCounter (0..255),
              phivDDCMPCircuitSelectIntervalsElap
                  PhivCounter (0..65535),
              phivDDCMPCircuitSelectTimeouts
                  PhivCounter (0..255)
          }



DECnet Phase IV MIB Working Group                              [Page 34]

RFC 1289                  DECnet Phase IV MIB              December 1991


      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 }

      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 }




DECnet Phase IV MIB Working Group                              [Page 35]

RFC 1289                  DECnet Phase IV MIB              December 1991


      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 }

      -- 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
                  INTEGER,
              phivDDCMPLineCountDataErrsIn
                  PhivCounter (0..255),
              phivDDCMPLineCountRmteStationErrs
                  PhivCounter (0..255),
              phivDDCMPLineCountLocalStationErrs
                  PhivCounter (0..255)
          }





DECnet Phase IV MIB Working Group                              [Page 36]

RFC 1289                  DECnet Phase IV MIB              December 1991


      phivDDCMPLineCountIndex OBJECT-TYPE
          SYNTAX INTEGER
          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
          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 mandatory for all systems which support DDCMP
      -- multipoint control circuits.

      phivControlSchedTimer OBJECT-TYPE
          SYNTAX INTEGER (50..65535)
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "This value represents the number of milliseconds



DECnet Phase IV MIB Working Group                              [Page 37]

RFC 1289                  DECnet Phase IV MIB              December 1991


              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
          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."



DECnet Phase IV MIB Working Group                              [Page 38]

RFC 1289                  DECnet Phase IV MIB              December 1991


          ::= { 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,
              phivControlBabbleTimer
                  INTEGER (1..65535),
              phivControlMaxBuffs
                  INTEGER (0..254),
              phivControlMaxTransmits
                  INTEGER (1..255),
              phivControlDyingBase
                  INTEGER (0..255),
              phivControlDyingIncrement
                  INTEGER (0..255),
              phivControlDeadThreshold
                  INTEGER (0..255),
              phivControlDyingThreshold
                  INTEGER (0..255),
              phivControlInactTreshold
                  INTEGER (0..255),
              phivControlPollingState
                  INTEGER,
              phivControlPollingSubState
                  INTEGER,
              phivControlTransTimer
                  INTEGER (0..65535)
          }
      phivControlCircuitIndex OBJECT-TYPE
          SYNTAX INTEGER
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "A unique index value for each known multirpoint
              control circuit.
               This is the same value as phivCircuitIndex."
          ::= { phivControlParametersEntry 1 }



DECnet Phase IV MIB Working Group                              [Page 39]

RFC 1289                  DECnet Phase IV MIB              December 1991



      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 (0..254)
          ACCESS read-write
          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 }




DECnet Phase IV MIB Working Group                              [Page 40]

RFC 1289                  DECnet Phase IV MIB              December 1991


      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
          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 }




DECnet Phase IV MIB Working Group                              [Page 41]

RFC 1289                  DECnet Phase IV MIB              December 1991


      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:

              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 }




DECnet Phase IV MIB Working Group                              [Page 42]

RFC 1289                  DECnet Phase IV MIB              December 1991


      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.

      -- 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 (0..255),
              phivEthRouterPri
                  INTEGER (0..127),
              phivEthHardwareAddr
                  OCTET STRING



DECnet Phase IV MIB Working Group                              [Page 43]

RFC 1289                  DECnet Phase IV MIB              December 1991


           }
      phivEthLinkIndex OBJECT-TYPE
          SYNTAX INTEGER
          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
          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



DECnet Phase IV MIB Working Group                              [Page 44]

RFC 1289                  DECnet Phase IV MIB              December 1991


              the DECnet Software.  This value is not the same as
              ifPhysAddress."
          ::= { phivEthLinkParametersEntry 5 }

      -- Counters Group

      -- The implementation of the Counters Group is mandatory for
      -- systems which only support DECnet style locking counters.

      -- Counters Table

      phivCountersCountTable OBJECT-TYPE
          SYNTAX SEQUENCE OF PhivCountersCountEntry
          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
                  INTEGER,
              phivCountersCountBytesRecd
                  PhivCounter,
              phivCountersCountBytesSent
                  PhivCounter,
              phivCountersCountDataBlocksRecd
                  PhivCounter,
              phivCountersCountDataBlocksSent
                  PhivCounter,
              phivCountersCountEthUsrBuffUnav
                  PhivCounter (0..65535),
              phivCountersCountMcastBytesRecd
                  PhivCounter,
              phivCountersCountDataBlksRecd
                  PhivCounter,
              phivCountersCountDataBlksSent



DECnet Phase IV MIB Working Group                              [Page 45]

RFC 1289                  DECnet Phase IV MIB              December 1991


                  PhivCounter,
              phivCountersCountMcastBlksRecd
                  PhivCounter,
              phivCountersCountBlksSentDef
                  PhivCounter,
              phivCountersCountBlksSentSingleCol
                  PhivCounter,
              phivCountersCountBlksSentMultCol
                  PhivCounter,
              phivCountersCountSendFailure
                  PhivCounter,
              phivCountersCountCollDetectFailure
                  PhivCounter (0..65535),
              phivCountersCountReceiveFailure
                  PhivCounter (0..65535),
              phivCountersCountUnrecFrameDest
                  PhivCounter (0..65535),
              phivCountersCountDataOver
                  PhivCounter (0..65535),
              phivCountersCountSysBuffUnav
                  PhivCounter (0..65535),
              phivCountersCountUsrBuffUnav
                  PhivCounter (0..65535)
           }
      phivCountersIndex OBJECT-TYPE
          SYNTAX INTEGER
          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
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "Number of bytes received over this link."
          ::= { phivCountersCountEntry 2 }

      phivCountersCountBytesSent OBJECT-TYPE
          SYNTAX PhivCounter
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "Number of bytes sent over this link."



DECnet Phase IV MIB Working Group                              [Page 46]

RFC 1289                  DECnet Phase IV MIB              December 1991


          ::= { phivCountersCountEntry 3 }

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

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

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

      phivCountersCountDataBlksSent OBJECT-TYPE
          SYNTAX PhivCounter
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION



DECnet Phase IV MIB Working Group                              [Page 47]

RFC 1289                  DECnet Phase IV MIB              December 1991


              "Number of data blocks sent over this link."
          ::= { phivCountersCountEntry 9 }

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

      phivCountersCountBlksSentDef OBJECT-TYPE
          SYNTAX PhivCounter
          ACCESS read-only
          STATUS mandatory
          DESCRIPTION
              "Number of blocks sent, initially deferred over this
              link."
          ::= { phivCountersCountEntry 11 }

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

      phivCountersCountBlksSentMultCol OBJECT-TYPE
          SYNTAX PhivCounter
          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



DECnet Phase IV MIB Working Group                              [Page 48]

RFC 1289                  DECnet Phase IV MIB              December 1991


          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."
          ::= { 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 }





DECnet Phase IV MIB Working Group                              [Page 49]

RFC 1289                  DECnet Phase IV MIB              December 1991


      -- Adjacency Group

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

      phivAdjTable OBJECT-TYPE
          SYNTAX SEQUENCE OF PhivAdjEntry
          ACCESS not-accessible
          STATUS mandatory
          DESCRIPTION
              "The Adjacency Table."
          ::= { adjacency 1 }

      phivAdjEntry OBJECT-TYPE
          SYNTAX PhivAdjEntry
          ACCESS not-accessible
          STATUS mandatory
          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 mandatory



DECnet Phase IV MIB Working Group                              [Page 50]

RFC 1289                  DECnet Phase IV MIB              December 1991


          DESCRIPTION
              "A unique index value for each known circuit."
          ::= { phivAdjEntry 1 }

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

      phivAdjBlockSize 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."
          ::= { phivAdjEntry 3 }

      phivAdjListenTimer OBJECT-TYPE
          SYNTAX INTEGER (1..65535)
          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."
          ::= { phivAdjEntry 4 }

      phivAdjCircuitEtherServPhysAddr 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."
          ::= { phivAdjEntry 5 }




DECnet Phase IV MIB Working Group                              [Page 51]

RFC 1289                  DECnet Phase IV MIB              December 1991


      phivAdjType 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)"
          ::= { 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 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 (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,



DECnet Phase IV MIB Working Group                              [Page 52]

RFC 1289                  DECnet Phase IV MIB              December 1991


              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."
          ::= { phivAdjEntry 7 }

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

      phivAdjExecListenTimer OBJECT-TYPE
          SYNTAX INTEGER (1..65535)
          ACCESS read-only
          STATUS mandatory
          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 }

      -- 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 }



DECnet Phase IV MIB Working Group                              [Page 53]

RFC 1289                  DECnet Phase IV MIB              December 1991



      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
                  INTEGER,
              phivLineName
                  DisplayString,
              phivLineState
                  INTEGER,
              phivLineSubstate
                  INTEGER,
              phivLineService
                  INTEGER,
              phivLineDevice
                  DisplayString,
              phivLineReceiveBuffs
                  INTEGER (0..65535),
              phivLineProtocol
                  INTEGER,
              phivLineServiceTimer
                  INTEGER (1..65535),
              phivLineMaxBlock
                  INTEGER (1..65535)
          }

      phivLineIndex OBJECT-TYPE
          SYNTAX INTEGER
          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



DECnet Phase IV MIB Working Group                              [Page 54]

RFC 1289                  DECnet Phase IV MIB              December 1991


              "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
          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),



DECnet Phase IV MIB Working Group                              [Page 55]

RFC 1289                  DECnet Phase IV MIB              December 1991


                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),
              ddcmp-control (2),
              ddcmp-tributary (3),
              reserved (4),
              ddcmp-dmc (5),
              lapb (6),
              ethernet (7),
              ci (8),
              qp2 (9),
              other (14),
              fddi (15)
          }
          ACCESS read-only



DECnet Phase IV MIB Working Group                              [Page 56]

RFC 1289                  DECnet Phase IV MIB              December 1991


          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
      -- mandatory for all systems which implement non broadcast
      -- lines.

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



DECnet Phase IV MIB Working Group                              [Page 57]

RFC 1289                  DECnet Phase IV MIB              December 1991


          INDEX  { phivNonBroadcastIndex }
          ::= { phivNonBroadcastTable 1 }

      PhivNonBroadcastEntry ::=
          SEQUENCE {
              phivNonBroadcastIndex
                  INTEGER,
              phivNonBroadcastController
                  INTEGER,
              phivNonBroadcastDuplex
                  INTEGER,
              phivNonBroadcastClock
                  INTEGER,
              phivNonBroadcastRetransmitTimer
                  INTEGER (1..65535)
          }
      phivNonBroadcastIndex OBJECT-TYPE
          SYNTAX INTEGER
          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
              "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.




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RFC 1289                  DECnet Phase IV MIB              December 1991


       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:

              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



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RFC 1289                  DECnet Phase IV MIB              December 1991


              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 }
          ::= { phivAreaTable 1 }

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



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RFC 1289                  DECnet Phase IV MIB              December 1991


                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 }

      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
          ACCESS read-only



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RFC 1289                  DECnet Phase IV MIB              December 1991


          STATUS mandatory
          DESCRIPTION
              "The next node on the circuit used to get to the
              area under scrutiny."
          ::= { phivAreaEntry 5 }

      phivAreaCircuitIndex OBJECT-TYPE
          SYNTAX INTEGER
          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
              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."



DECnet Phase IV MIB Working Group                              [Page 62]

RFC 1289                  DECnet Phase IV MIB              December 1991


          ::= { area 4 }

      END

5.  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

6.  References

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

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

  McCloghrie K., and M. Rose, "Management Information Base for Network
  Management of TCP/IP-based internets", RFC 1156, Hughes LAN Systems,
  Performance Systems International, May 1990.

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

  McCloghrie K., and M. Rose, Editors, "Management Information Base for
  Network Management of TCP/IP-based internets", RFC 1213, Performance
  Systems International, March 1991.

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

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

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

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



DECnet Phase IV MIB Working Group                              [Page 63]

RFC 1289                  DECnet Phase IV MIB              December 1991


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

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

Security Considerations

  Security issues are not discussed in this memo.

Author's Address

  Jon Saperia
  Digital Equipment Corporation
  40 Old Bolton Road
  Stow, Massachusetts 01775-1215

  Phone: 508-496-8333

  EMail: [email protected]





























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