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rfc:rfc1289

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

DECnet Phase IV MIB Working Group [Page 1] RFC 1289 DECnet Phase IV MIB December 1991

 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

DECnet Phase IV MIB Working Group [Page 2] RFC 1289 DECnet Phase IV MIB December 1991

   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.

DECnet Phase IV MIB Working Group [Page 3] RFC 1289 DECnet Phase IV MIB December 1991

 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;
  1. - DECNet Phase-IV MIB
          phiv             OBJECT IDENTIFIER ::= { mib-2 18 }
  1. - 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

DECnet Phase IV MIB Working Group [Page 4] RFC 1289 DECnet Phase IV MIB December 1991

  1. - number is contained in the most significant 6 bits of the
  2. - first octet. The next 2 bits of the first octet contain
  3. - the first two bits of the host address. The remainder of
  4. - 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.
  1. - 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 }
  1. - System Group
  1. - The implementation of the System Group is mandatory for
  2. - 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

DECnet Phase IV MIB Working Group [Page 5] RFC 1289 DECnet Phase IV MIB December 1991

                          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 }
  1. - Network Management Group
  1. - The implementation of the Network Management Group is
  2. - mandatory for all systems which contain a DECnet style
  3. - 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 }
  1. - Session Layer Group
  1. - The implementation of the Session Layer Group is mandatory for
  2. - all systems that implement session layer communications.

DECnet Phase IV MIB Working Group [Page 6] RFC 1289 DECnet Phase IV MIB December 1991

     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 }
  1. - End Communication Layer Group
  1. - The implementation of the End Communication Layer Group is
  2. - mandatory for all systems that implement end layer
  3. - communications.
  1. - Remote State Table

DECnet Phase IV MIB Working Group [Page 7] RFC 1289 DECnet Phase IV MIB December 1991

     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)

DECnet Phase IV MIB Working Group [Page 8] RFC 1289 DECnet Phase IV MIB December 1991

         }
         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

DECnet Phase IV MIB Working Group [Page 9] RFC 1289 DECnet Phase IV MIB December 1991

             delay in seconds to the destination node. This
             parameter is kept on a remote node basis."
         ::= { phivEndRemoteEntry 5 }
  1. - 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

DECnet Phase IV MIB Working Group [Page 10] RFC 1289 DECnet Phase IV MIB December 1991

                 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 }

DECnet Phase IV MIB Working Group [Page 11] RFC 1289 DECnet Phase IV MIB December 1991

     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 }
  1. - 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 }
  1. - Routing Layer Group
  1. - The implementation of the Routing Layer Group is mandatory for
  2. - all systems that implement level 1 routing layer
  3. - 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 }
  1. - 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 }
  1. - 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

  1. - Circuit Group
  1. - The implementation of the Circuit Group is mandatory for
  2. - all systems.
  1. - 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 }
  1. - 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 }
  1. - 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 }
  1. - DDCMP Circuit Group
  1. - The implementation of the DDCMP Circuit Group is mandatory for
  2. - all systems which support DDCMP circuits.

DECnet Phase IV MIB Working Group [Page 32] RFC 1289 DECnet Phase IV MIB December 1991

  1. - 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 }
  1. - 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 }
  1. - 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 }
  1. - DDCMP Multipoint Circuit Control Group
  1. - The implementation of the DDCMP Multipoint Circuit Control
  2. - Group is mandatory for all systems which support DDCMP
  3. - 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 }
  1. - 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 }
  1. - Ethernet Group
  1. - The implementation of the Ethernet Group is mandatory
  2. - for all systems which support ethernet links.
  1. - 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 }
  1. - Counters Group
  1. - The implementation of the Counters Group is mandatory for
  2. - systems which only support DECnet style locking counters.
  1. - 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

  1. - Adjacency Group
  1. - The implementation of the Adjacency Group is mandatory for all
  2. - 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 }
  1. - Line Group
  1. - The implementation of the Line Group is mandatory for all
  2. - 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 }
  1. - Non Broadcast Line Group
  1. - The implementation of the Non Broadcast Line Group is
  2. - mandatory for all systems which implement non broadcast
  3. - 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.

DECnet Phase IV MIB Working Group [Page 58] 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

DECnet Phase IV MIB Working Group [Page 59] 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 }
  1. - Area Parameters Group
  1. - The implementation of the Area Parameters Group is mandatory
  2. - 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

DECnet Phase IV MIB Working Group [Page 60] 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

DECnet Phase IV MIB Working Group [Page 61] 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 }
  1. - 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: saperia@enet.dec.com

DECnet Phase IV MIB Working Group [Page 64]

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