System information

Configuring IP Multicast Routing
8-7
Configuring Candidate RPs
One or more rendezvous points (RPs) can be configured to serve as candidates in a
PIM domain to avoid a single point of failure. Candidate RPs should be configured on
the backbone portion of the network to help improve the efficiency of the multicast
network.
Candidate RPs send candidate RP advertisements to the bootstrap router (BSR) and
the BSR then distributes all RP information to the PIM domain. Each router
determines which RP has the highest priority and whcih RP to use for a multicast
group range. An RP can serve the entire IP multicast address space or a portion of it.
Select from the following options to configure one or more candidate RPs on the PIM
domain in Interface Configuration mode:
• If you want a single RP candidate to cover all groups on the PIM domain, use the
ip pim rp-candidate command, as shown below:
MOT(config-if)#ip pim rp-candidate
• Use the ip pim rp-candidate group-list command to configure a specific group
range for the RP configured on this interface, as shown below:
MOT(config-if)#ip pim rp-candidate group-list <n>
where:
n is the access list reference number from 1 to 99 for group prefixes.
• The default interval, for an RP advertisement is 60 seconds. If you want to change
the interval in which an RP candidate is selected, use the ip pim rp-candidate
interval command, as shown below:
MOT(config-if)#ip pim rp-candidate interval <n>
where:
Note: If you are configuring routers from other vendors as candidate RPs,
ensure that they support PIM Version 2.