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

Table 37: 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

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