Configuring a PIM Anycast RP Router Using Only PIM

In this example, configure an RP using the lo0 or loopback interface, which is always up. Use the address statement to specify the unique and routable router address and the RP address at the [edit interfaces lo0 unit 0 family inet] hierarchy level. In this case, the router ID is 198.58.3.254/32 and the shared RP address is 198.58.3.253/32. Add the flag statement primary to the first address. Using this flag selects the router's primary address from all the preferred addresses on all interfaces.

Add the address statement at the [edit protocols pim rp local] hierarchy level to specify the RP address (the same address as the secondary lo0 interface).

For all interfaces, use the mode statement to set the mode to sparse, and the version statement to specify PIM version 2 at the [edit protocols pim rp local interface all] hierarchy level. When configuring all interfaces, exclude the fxp0.0 management interface by adding the disable statement for that interface.

Use the anycast-pim statement to configure anycast RP without MSDP (for example, if IPv6 is used for multicasting). The other RP routers that share the same IP address are configured using the rp-set statement. There is one entry for each RP, and the maximum that can be configured is 15. For each RP, specify the routable IP address of the router and whether MSDP source active (SA) messages are forwarded to the RP.

MSDP configuration is not necessary for this type of IPv4 anycast RP configuration.