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    Monitoring the RP Router that a Multicast Group Uses for IPv4

    Purpose

    Show which RP router that a multicast group is using.

    Action

    To show which RP router that a multicast group is using:

    host1:2#show ip pim rp-hash 232.1.1.1
    Group(s) 224.0.0.0/4
      RP 122.0.0.1,  priority 0,  via  AutoRP, expiryTime 128
    host1:2#show ip pim rp-hash 226.0.0.1
    Group(s) 226.0.0.0/24
      RP 101.0.0.1, priority 192, via BSR, expires in 145 seconds
     *RP 145.0.0.3, priority 192, via BSR, expires in 145 seconds

    Meaning

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

    Table 1: show ip pim rp-hash Output Fields

    Field Name

    Field Description

    Group(s)

    Multicast group or groups

    RP

    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 it is renewed by the mapping agent

    Published: 2014-08-19