Brocade Multi-Service IronWare Multicast Configuration Guide (Supporting R05.6.00) - Manual (Page 101)

Multi-Service IronWare Multicast Configuration Guide 89
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PIM Anycast RP
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PIMR2(config)# router pim
PIMR2(config-pim-router)# rp-address 10.0.0.1
PIMR2(config-pim-router)# exit
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 re-encapsulate the packet with the local peering address as the source address
of the encapsulation. The router will unicast the packet to all Anycast RP peers. The
re-encapsulation of the data register packet to Anycast RP peers ensures source state distribution
to all RPs in a multicast domain.
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.
Brocade(config)#router pim
Brocade(config-pim-router)#rp-address 100.1.1.1
Brocade(config-pim-router)#anycast-rp 100.1.1.1 my-anycast-rp-set-acl
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 anycast-rp-set-acl parameter specifies a host based simple acl used to specifies the address of
the Anycast RP set, including a local address.
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 as a router-id. A PIM First Hop router will register the source with the closest RP. The first RP
that receives the register will re-encapsulate the register to all other Anycast RP peers. Please refer
to
Figure 12 as described in the configuration of PIM Anycast RP 100.1.1.1.
Brocade(config)#interface loopback 2
Brocade(config-lbif-2)#ip address 100.1.1.1/24
Brocade(config-lbif-2)#ip pim-sparse
Brocade(config-lbif-2)#interface loopback 3
Brocade(config-lbif-3)#ip address 1.1.1.1/24
Brocade(config-lbif-3)#ip pim-sparse
Brocade(config-lbif-3)#router pim
Brocade(config-pim-router)#rp-address 100.1.1.1
Brocade(config-pim-router)#anycast-rp 100.1.1.1 my-anycast-rp-set