rfc1850.txt

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2.5.  Default Configuration

   OSPF is a powerful routing protocol, equipped with features to handle
   virtually any configuration requirement that might reasonably be
   found within an Autonomous System.  With this power comes a fair
   degree of complexity, which the sheer number of objects in the MIB
   will attest to.  Care has therefore been taken, in constructing this
   MIB, to define default values for virtually every object, to minimize
   the amount of parameterization required in the typical case.  That
   default configuration is as follows:

   Given the following assumptions:

   -    IP has already been configured

   -    The ifTable has already been configured

   -    ifSpeed is estimated by the interface drivers

   -    The OSPF Process automatically discovers all IP
        Interfaces and creates corresponding OSPF Interfaces

   -    The TOS 0 metrics are autonomously derived from ifSpeed

   -    The OSPF Process automatically creates the Areas required
        for the Interfaces

   The simplest configuration of an OSPF process requires that:

   -    The OSPF Process be Enabled.



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RFC 1850                        OSPF MIB                   November 1995


   This can be accomplished with a single SET:

                  ospfAdminStat := enabled.

   The configured system will have the following attributes:

   -    The RouterID will be one of the IP addresses of the
        device

   -    The device will be neither an Area Border Router nor an
        Autonomous System Border Router.

   -    Every IP Interface, with or without an address, will be
        an OSPF Interface.

   -    The AreaID of each interface will be 0.0.0.0, the
        Backbone.

   -    Authentication will be disabled

   -    All Broadcast and Point to Point interfaces will be
        operational.  NBMA Interfaces require the configuration
        of at least one neighbor.

   -    Timers on all direct interfaces will be:

          Hello Interval:        10 seconds
          Dead Timeout:          40 Seconds
          Retransmission:         5 Seconds
          Transit Delay:          1 Second
          Poll Interval:        120 Seconds

   -    no direct links to hosts will be configured.

   -    no addresses will be summarized

   -    Metrics, being a measure of bit duration, are unambiguous
        and intelligent.

   -    No Virtual Links will be configured.











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RFC 1850                        OSPF MIB                   November 1995


3.  Definitions

OSPF-MIB DEFINITIONS ::= BEGIN

    IMPORTS
            MODULE-IDENTITY, OBJECT-TYPE, Counter32, Gauge32,
            Integer32, IpAddress
                FROM SNMPv2-SMI
            TEXTUAL-CONVENTION, TruthValue, RowStatus
                FROM SNMPv2-TC
            MODULE-COMPLIANCE, OBJECT-GROUP          FROM SNMPv2-CONF
            mib-2                                    FROM RFC1213-MIB;

--  This MIB module uses the extended OBJECT-TYPE macro as
--  defined in [9].

ospf MODULE-IDENTITY
        LAST-UPDATED "9501201225Z" -- Fri Jan 20 12:25:50 PST 1995
        ORGANIZATION "IETF OSPF Working Group"
        CONTACT-INFO
       "       Fred Baker
       Postal: Cisco Systems
               519 Lado Drive
               Santa Barbara, California 93111
       Tel:    [phone]
       E-Mail: [e-mail]

               Rob Coltun
       Postal: RainbowBridge Communications
       Tel:    [phone]
       E-Mail: [e-mail]"
    DESCRIPTION
       "The MIB module to describe the OSPF Version 2
       Protocol"
    ::= { mib-2 14 }

--  The Area ID, in OSPF, has the same format as an IP Address,
--  but has the function of defining a summarization point for
--  Link State Advertisements

AreaID ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "An OSPF Area Identifier."
    SYNTAX      IpAddress


--  The Router ID, in OSPF, has the same format as an IP Address,



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RFC 1850                        OSPF MIB                   November 1995


--  but identifies the router independent of its IP Address.

RouterID ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "A OSPF Router Identifier."
    SYNTAX      IpAddress


--  The OSPF Metric is defined as an unsigned value in the range

Metric ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "The OSPF Internal Metric."
    SYNTAX      Integer32 (0..'FFFF'h)

BigMetric ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "The OSPF External Metric."
    SYNTAX      Integer32 (0..'FFFFFF'h)

--  Status Values

Status ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "The status of an interface: 'enabled' indicates that
       it is willing to communicate with other OSPF Routers,
       while 'disabled' indicates that it is not."
    SYNTAX      INTEGER { enabled (1), disabled (2) }

--  Time Durations measured in seconds

PositiveInteger ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "A positive integer. Values in excess are precluded as
       unnecessary and prone to interoperability issues."
    SYNTAX      Integer32 (0..'7FFFFFFF'h)

HelloRange ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "The range of intervals on which hello messages are
       exchanged."
    SYNTAX      Integer32 (1..'FFFF'h)



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RFC 1850                        OSPF MIB                   November 1995


UpToMaxAge ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "The values that one might find or configure for
       variables bounded by the maximum age of an LSA."
    SYNTAX      Integer32 (0..3600)


--  The range of ifIndex

InterfaceIndex ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "The range of ifIndex."
    SYNTAX      Integer32


--  Potential Priorities for the Designated Router Election

DesignatedRouterPriority ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "The values defined for the priority of a system for
       becoming the designated router."
    SYNTAX      Integer32 (0..'FF'h)

TOSType ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
       "Type of Service is defined as a mapping to the IP Type of
       Service Flags as defined in the IP Forwarding Table MIB

       +-----+-----+-----+-----+-----+-----+-----+-----+
       |                 |                       |     |
       |   PRECEDENCE    |    TYPE OF SERVICE    |  0  |
       |                 |                       |     |
       +-----+-----+-----+-----+-----+-----+-----+-----+

                IP TOS                IP TOS
           Field     Policy      Field     Policy

           Contents    Code      Contents    Code
           0 0 0 0  ==>   0      0 0 0 1  ==>   2
           0 0 1 0  ==>   4      0 0 1 1  ==>   6
           0 1 0 0  ==>   8      0 1 0 1  ==>  10
           0 1 1 0  ==>  12      0 1 1 1  ==>  14
           1 0 0 0  ==>  16      1 0 0 1  ==>  18
           1 0 1 0  ==>  20      1 0 1 1  ==>  22



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RFC 1850                        OSPF MIB                   November 1995


           1 1 0 0  ==>  24      1 1 0 1  ==>  26
           1 1 1 0  ==>  28      1 1 1 1  ==>  30

       The remaining values are left for future definition."
    SYNTAX      Integer32 (0..30)


--  OSPF General Variables

--      These parameters apply globally to the Router's
--      OSPF Process.

ospfGeneralGroup OBJECT IDENTIFIER ::= { ospf 1 }


    ospfRouterId OBJECT-TYPE
        SYNTAX   RouterID
        MAX-ACCESS   read-write
        STATUS   current
        DESCRIPTION
           "A  32-bit  integer  uniquely  identifying  the
           router in the Autonomous System.

           By  convention,  to  ensure  uniqueness,   this
           should  default  to  the  value  of  one of the
           router's IP interface addresses."
       REFERENCE
          "OSPF Version 2, C.1 Global parameters"
      ::= { ospfGeneralGroup 1 }


    ospfAdminStat OBJECT-TYPE
        SYNTAX   Status
        MAX-ACCESS   read-write
        STATUS   current
        DESCRIPTION
           "The  administrative  status  of  OSPF  in  the
           router.   The  value 'enabled' denotes that the
           OSPF Process is active on at least  one  inter-
           face;  'disabled'  disables  it  on  all inter-
           faces."
       ::= { ospfGeneralGroup 2 }

    ospfVersionNumber OBJECT-TYPE
        SYNTAX   INTEGER    { version2 (2) }
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION



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RFC 1850                        OSPF MIB                   November 1995


           "The current version number of the OSPF  proto-
           col is 2."
       REFERENCE
          "OSPF Version 2, Title"
      ::= { ospfGeneralGroup 3 }


    ospfAreaBdrRtrStatus OBJECT-TYPE
        SYNTAX   TruthValue
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "A flag to note whether this router is an  area
           border router."
       REFERENCE
          "OSPF Version 2, Section 3 Splitting the AS into
          Areas"
      ::= { ospfGeneralGroup 4 }


    ospfASBdrRtrStatus OBJECT-TYPE
        SYNTAX   TruthValue
        MAX-ACCESS   read-write
        STATUS   current
        DESCRIPTION
           "A flag to note whether this router is  config-
           ured as an Autonomous System border router."
       REFERENCE
          "OSPF Version 2, Section 3.3  Classification  of
          routers"
      ::= { ospfGeneralGroup 5 }

    ospfExternLsaCount OBJECT-TYPE
        SYNTAX   Gauge32
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "The number of external (LS type 5)  link-state
           advertisements in the link-state database."
       REFERENCE
          "OSPF Version 2, Appendix A.4.5 AS external link
          advertisements"
      ::= { ospfGeneralGroup 6 }


    ospfExternLsaCksumSum OBJECT-TYPE
        SYNTAX   Integer32
        MAX-ACCESS   read-only



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RFC 1850                        OSPF MIB                   November 1995


        STATUS   current
        DESCRIPTION
           "The 32-bit unsigned sum of the LS checksums of
           the  external  link-state  advertisements  con-
           tained in the link-state  database.   This  sum
           can  be  used  to determine if there has been a
           change in a router's link state  database,  and
           to  compare  the  link-state  database  of  two
           routers."
       ::= { ospfGeneralGroup 7 }


    ospfTOSSupport OBJECT-TYPE
        SYNTAX   TruthValue
        MAX-ACCESS   read-write
        STATUS   current
        DESCRIPTION
           "The router's support for type-of-service rout-
           ing."
       REFERENCE
          "OSPF Version 2,  Appendix  F.1.2  Optional  TOS
          support"
      ::= { ospfGeneralGroup 8 }

    ospfOriginateNewLsas OBJECT-TYPE
        SYNTAX   Counter32
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "The number of  new  link-state  advertisements
           that  have been originated.  This number is in-
           cremented each time the router originates a new
           LSA."
       ::= { ospfGeneralGroup 9 }


    ospfRxNewLsas OBJECT-TYPE
        SYNTAX   Counter32
        MAX-ACCESS   read-only
        STATUS   current