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    Monitoring DVMRP Neighbors

    Purpose

    Display information about DVMRP neighbors. Specify the brief keyword to view a summary of information.

    Action

    To display information about DVMRP neighbors:

    host1:boston# show ip dvmrp neighbor
    Neighbor Address:                   14.0.0.1
          Interface:                    atm5/0.14
          Neighbor upTime:                28
          Neighbor Major Version:          3
          Neighbor Minor Version:        255
          Neighbor Capabilities:  Prune  GenerationId  Mtrace  NetMask
          Neighbor State:             Active
          Generation ID:        0x3a13fbc2
          Routes Received:                 1
          Bad Routes Received              0
          Bad Packets Received:            0
    

    To display a summary of information about DVMRP neighbors:

    host1:v3#show ip dvmrp neighbor brief
      Interface          NbrAddress      UpTime Maj Min Cap   State
      atm5/0.14          14.0.0.1            32   3 255 PGMN  Active
      atm5/0.15          15.0.0.1            34   3 255 PGMN  Active

    Meaning

    Table 1 lists the show ip dvmrp neighbor command output fields.

    Table 1: show ip dvmrp neighbor Output Fields

    Field

    Description

    Neighbor Address/NbrAddress

    IP address of the neighbor

    Interface

    Interface type and specifier, such as atm3/0. For details about interface types and specifiers, see Interface Types and Specifiers in JunosE Command Reference Guide.

    Neighbor upTime/UpTime

    Length of time, in seconds, that this router has been a neighbor

    Neighbor Major Version/Maj

    Major number of the DVMRP version on the neighbor

    Neighbor Minor Version/Min

    Minor number of the DVMRP version on the neighbor

    Neighbor Capabilities/Cap

    Capability of the neighbor

    Prune/P

    Ability to send prune messages

    Generation ID

    Ability to create a generation ID number

    Mtrace/M

    Ability to trace multicast routes

    Netmask/N

    Ability to send prunes and grafts with a network mask address

    Neighbor State/State

    Status of communications with the neighbor

    Active

    Router is able to communicate with this neighbor

    Down

    Neighbor is down

    Ignoring

    Router is not accepting messages from this neighbor

    Oneway

    Router is receiving messages from the neighbor, but the neighbor does not include the router's IP address in the messages. This state can indicate a starting transition, or a problem.

    Generation ID

    Number that the neighbor generates each time it boots; when the number changes, the VR discards all information previously learned from the router.

    Routes Received

    Number of routes received from this neighbor

    Bad Routes Received

    Number of bad routes received from this neighbor

    Bad Packets Received

    Number of bad packets received from this neighbor

     

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    Published: 2014-08-19