Users Guide

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1061

Configure static rendezvous point

The rendezvous point (RP) is an interface on a router that acts as the root to a group-specific tree; every group must have an

RP. You must configure the RP on all nodes in your network.

To configure a static RP:

OS10# configure terminal

OS10(config)# ip pim rp-address 171.1.1.1 group-address 225.1.1.3/32

Override bootstrap router updates

A bootstrap router (BSR) is a router in a PIM domain that helps to automatically discover the RP for a given multicast group in a

multicast network. PIM routers use the BSR to obtain the RP IP address. You can also statically configure an IP address for the

RP. If you configure a static RP for a group, to override BSR updates with the static RP configuration, use the override

option in the ip pim rp-address command. If you do not explicitly use the override option and:

● The prefix length of the static RP is the same as the RP advertised in the BSR updates, the BSR RP takes precedence over

the statically configured RP.

● If the prefix length of the static RP and the BSR RP does not match, OS10 selects the router having the longest-match

prefix as the RP.

To override BSR updates:

OS10# configure terminal

OS10(config)# ip pim rp-address 20.1.1.1 255.1.2.3/24 override

NOTE:

If you have enabled the override option, configuring static RP without using the override option does not

remove the override configuration. You must delete the static RP configuration using the override option and then

reconfigure static RP again.

To view the RP for a multicast group, use the show ip pim rp command.

OS10# show ip pim rp

Group RP

---------------------------------

225.1.1.1 171.1.1.1

225.1.1.2 171.1.1.1

225.1.1.3 171.1.1.1

225.1.1.4 171.1.1.1

225.1.1.5 171.1.1.1

225.1.1.6 171.1.1.1

To view the RP for a multicast group range, use the show ip pim rp mapping command.

OS10# show ip pim rp mapping

PIM Group-to-RP Mappings

Group(s): 230.1.1.1/32

RP:14.1.1.1, v2

Info source: 42.1.1.1, via bootstrap, priority 255

expires: 00:01:53

Group(s): 231.1.1.1/32

RP: 9.1.1.1, v2

Info source: 42.1.1.1, via bootstrap, priority 254

expires: 00:01:54

Configure dynamic RP using the BSR mechanism

You can configure a subset of PIM routers within the domain as candidate BSRs (C-BSRs). The C-BSRs exchange bootstrap

messages (BSM) to elect the BSR. The BSR informs its status to all the routers.

1062

Multicast