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    Monitoring PIM Group-to-RP Mappings for IPv4

    Purpose

    Display information about PIM group-to-RP mappings. Specify the address of a group to view PIM group-to-RP mappings for a particular group. Specify the mapping keyword to display all group-to-RP mappings that the router has recorded.

    Action

    To display information about PIM group-to-RP mappings:

    host1:8#show ip pim rp mapping 
    PIM Group-to-RP mapping(s)
    Group(s) 224.0.0.0/4
      RP 122.0.0.1,  priority 0,  via  AutoRP, expiryTime 88
    Group(s) 224.0.1.39/32 (negative)
      RP 122.0.0.1,  priority 0,  via  AutoRP (Negative), expiryTime 88
    Group(s) 224.0.1.40/32 (negative)
      RP 122.0.0.1,  priority 0,  via  AutoRP (Negative), expiryTime 88
    host1:8#show ip pim rp mapping 
    PIM Group-to-RP mapping(s)
    Group(s) 224.0.0.0/4
      RP 134.0.0.1, priority 0, via Static, from access-list 1
    Group(s) 232.0.0.0/16
      RP 134.0.0.1, priority 0, via BSR, expires in 121 seconds

    Meaning

    Table 1 lists the show ip pim rp command output fields.

    Table 1: show ip pim rp Output Fields

    Field Name

    Field Description

    Group(s)

    Prefix of the multicast group

    RP

    IP address of RP router for the multicast group

    priority

    Priority of the router

    via

    Method by which the RP router was assigned: AutoRP, Static RP, or BSR

    expiryTime

    Time in seconds at which the RP mapping becomes invalid, unless the mapping agent (access list) reassigns the RP router to this group

    Published: 2014-08-19