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3.10. OSPF Neighbor Table Connected: An Internet Encyclopedia
3.10. OSPF Neighbor Table

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3.10. OSPF Neighbor Table

3.10. OSPF Neighbor Table

--  OSPF Neighbor Table

--      The OSPF Neighbor Table describes all neighbors in
--      the locality of the subject router.

    ospfNbrTable OBJECT-TYPE
        SYNTAX   SEQUENCE OF OspfNbrEntry
        MAX-ACCESS   not-accessible
        STATUS   current
        DESCRIPTION
           "A table of non-virtual neighbor information."
       REFERENCE
          "OSPF Version 2, Section 10  The  Neighbor  Data
          Structure"
      ::= { ospf 10 }


    ospfNbrEntry OBJECT-TYPE
        SYNTAX   OspfNbrEntry
        MAX-ACCESS   not-accessible
        STATUS   current
        DESCRIPTION
           "The information regarding a single neighbor."
       REFERENCE
          "OSPF Version 2, Section 10  The  Neighbor  Data
          Structure"
      INDEX { ospfNbrIpAddr, ospfNbrAddressLessIndex }
      ::= { ospfNbrTable 1 }

OspfNbrEntry ::=
    SEQUENCE {
        ospfNbrIpAddr
            IpAddress,
        ospfNbrAddressLessIndex
            InterfaceIndex,
        ospfNbrRtrId
            RouterID,
        ospfNbrOptions
            Integer32,
        ospfNbrPriority
            DesignatedRouterPriority,
        ospfNbrState
            INTEGER,
        ospfNbrEvents
            Counter32,
        ospfNbrLsRetransQLen
            Gauge32,
        ospfNbmaNbrStatus
            RowStatus,
        ospfNbmaNbrPermanence
            INTEGER,
        ospfNbrHelloSuppressed
            TruthValue
              }

    ospfNbrIpAddr OBJECT-TYPE
        SYNTAX   IpAddress
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "The IP address this neighbor is using  in  its
           IP  Source  Address.  Note that, on addressless
           links, this will not be 0.0.0.0,  but  the  ad-
           dress of another of the neighbor's interfaces."
       ::= { ospfNbrEntry 1 }


    ospfNbrAddressLessIndex OBJECT-TYPE
        SYNTAX   InterfaceIndex
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "On an interface having an  IP  Address,  zero.
           On  addressless  interfaces,  the corresponding
           value of ifIndex in the Internet Standard  MIB.
           On  row  creation, this can be derived from the
           instance."
       ::= { ospfNbrEntry 2 }


    ospfNbrRtrId OBJECT-TYPE
        SYNTAX   RouterID
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "A 32-bit integer (represented as a type  IpAd-
           dress)  uniquely  identifying  the  neighboring
           router in the Autonomous System."
       DEFVAL   { '00000000'H }    -- 0.0.0.0
       ::= { ospfNbrEntry 3 }


    ospfNbrOptions OBJECT-TYPE
        SYNTAX   Integer32
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "A Bit Mask corresponding to the neighbor's op-
           tions field.

           Bit 0, if set, indicates that the  system  will
           operate  on  Type of Service metrics other than
           TOS 0.  If zero, the neighbor will  ignore  all
           metrics except the TOS 0 metric.

           Bit 1, if set, indicates  that  the  associated
           area  accepts and operates on external informa-
           tion; if zero, it is a stub area.

           Bit 2, if set, indicates that the system is ca-
           pable  of routing IP Multicast datagrams; i.e.,
           that it implements the Multicast Extensions  to
           OSPF.

           Bit 3, if set, indicates  that  the  associated
           area  is  an  NSSA.  These areas are capable of
           carrying type 7 external advertisements,  which
           are  translated into type 5 external advertise-
           ments at NSSA borders."
       REFERENCE
          "OSPF Version 2, Section 12.1.2 Options"
      DEFVAL { 0 }
      ::= { ospfNbrEntry 4 }


    ospfNbrPriority OBJECT-TYPE
        SYNTAX   DesignatedRouterPriority
        MAX-ACCESS   read-create
        STATUS   current
        DESCRIPTION
           "The priority of this neighbor in the designat-
           ed router election algorithm.  The value 0 sig-
           nifies that the neighbor is not eligible to be-
           come  the  designated router on this particular
           network."
       DEFVAL { 1 }
       ::= { ospfNbrEntry 5 }


    ospfNbrState OBJECT-TYPE
        SYNTAX   INTEGER    {
                    down (1),
                    attempt (2),
                    init (3),
                    twoWay (4),
                    exchangeStart (5),
                    exchange (6),
                    loading (7),
                    full (8)
                  }
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "The State of the relationship with this Neigh-
           bor."
       REFERENCE
          "OSPF Version 2, Section 10.1 Neighbor States"
      DEFVAL   { down }
      ::= { ospfNbrEntry 6 }


    ospfNbrEvents OBJECT-TYPE
        SYNTAX   Counter32
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "The number of times this neighbor relationship
           has changed state, or an error has occurred."
       ::= { ospfNbrEntry 7 }


    ospfNbrLsRetransQLen OBJECT-TYPE
        SYNTAX   Gauge32
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "The  current  length  of  the   retransmission
           queue."
       ::= { ospfNbrEntry 8 }


    ospfNbmaNbrStatus OBJECT-TYPE
        SYNTAX   RowStatus
        MAX-ACCESS   read-create
        STATUS   current
        DESCRIPTION
           "This variable displays the status of  the  en-
           try.  Setting it to 'invalid' has the effect of
           rendering it inoperative.  The internal  effect
           (row removal) is implementation dependent."
       ::= { ospfNbrEntry 9 }


    ospfNbmaNbrPermanence OBJECT-TYPE
        SYNTAX   INTEGER    {
                    dynamic (1),        -- learned through protocol
                    permanent (2)       -- configured address
                  }
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "This variable displays the status of  the  en-
           try.   'dynamic'  and  'permanent' refer to how
           the neighbor became known."
       DEFVAL { permanent }
       ::= { ospfNbrEntry 10 }


    ospfNbrHelloSuppressed OBJECT-TYPE
        SYNTAX   TruthValue
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
           "Indicates whether Hellos are being  suppressed
           to the neighbor"
       ::= { ospfNbrEntry 11 }



Next: 3.11. OSPF Virtual Neighbor Table

Connected: An Internet Encyclopedia
3.10. OSPF Neighbor Table

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