PIM Anycast RP
PIMR2 configuration
The following commands provide the configuration for the PIMR2 router in Figure 8 .
PIMR2(config)#router ospf
PIMR2(config)# interface ethernet 1/2
PIMR2(config)# interface ethernet 1/3
PIMR2(config)# router pim
PIM Anycast RP
PIM Anycast RP is a method of providing load balancing and fast convergence to PIM RPs in an IPv4 multicast domain. The RP address of the Anycast RP is a shared address used among multiple PIM routers, known as PIM RP. The PIM RP routers create an Anycast RP set. Each router in the Anycast RP set is configured using two IP addresses; a shared RP address in their loopback address and a separate, unique ip address. The loopback address must be reachable by all PIM routers in the multicast domain. The separate, unique ip address is configured to establish static peering with other PIM routers and communication with the peers.
When the source is activated in a PIM Anycast RP domain, the PIM First Hop (FH) will register the source to the closet PIM RP. The PIM RP follows the same MSDP Anycast RP operation by decapsulating the packet and creating the (s,g) state. If there are external peers in the Anycast RP set, the router will
Configuring PIM Anycast RP
A new PIM CLI is introduced for PIM Anycast RP under the router pim sub mode. The PIM CLI specifies mapping of the RP and the Anycast RP peers.
To configure PIM Anycast RP, enter the following command.
device(config)#router pim
Syntax: [no] anycast-rp rp-address anycast-rp-set-acl
The rp address parameter specifies a shared RP address used among multiple PIM routers.
The
The following example is a configuration of PIM Anycast RP 100.1.1.1.The example avoids using loopback 1 interface when configuring PIM Anycast RP because the loopback 1 address could be used
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