Brocade Multi-Service IronWare Multicast Configuration Guide (Supporting R05.6.00) - Manual (Page 192)

180 Multi-Service IronWare Multicast Configuration Guide
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PIM Anycast RP
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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 submode. The PIM CLI
specifies mapping of the RP and the Anycast RP peers.
To configure PIM Anycast RP, enter the following commands.
Brocade(config)# ipv6 router pim
Brocade(config-ipv6-pim-router)# rp-address 1001::1
Brocade(config-ipv6-pim-router)# anycast-rp 1001::1 my-anycast-rp-set-acl
To configure PIM Anycast RP for a specified VRF, enter the commands as shown in the following
example.
Brocade(config)# ipv6 router pim vrf blue
Brocade(config-ipv6-pim-router-vrf-blue)# rp-address 1001::1
Brocade(config-ipv6-pim-router-vrf-blue)# anycast-rp 1001::1
my-anycast-rp-set-acl
Syntax: [no] anycast-rp rp-address my-anycast-rp-set-acl
The rp address parameter specifies a shared RP address used among multiple PIM routers.
The my-anycast-rp-set-acl parameter specifies a host-based simple ACL used to specify the address
of the Anycast RP set, including a local address.
The following example is a configuration of PIM Anycast RP 1001:1.The example avoids using the
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. Refer to
Figure 20 as described in the configuration of PIM Anycast RP 1001:1.
Brocade(config)# interface loopback 2
Brocade(config-lbif-2)# ipv address 1001::1/96
Brocade(config-lbif-2)# ipv pim-sparse
Brocade(config-lbif-2)# interface loopback 3
Brocade(config-lbif-3)# ipv address 1:1:1::1/96
Brocade(config-lbif-3)# ipv pim-sparse
Brocade(config-lbif-3)# ipv6 router pim
Brocade(config-ipv6-pim-router)# rp-address 1001::1
Brocade(config-ipv6-pim-router)# anycast-rp 1001::1 my-anycast-rp-set
Brocade(config-ipv6-pim-router)# ipv6 access-list my-anycast-rp-set
Brocade(config-std-nacl)# permit ipv6 host 1:1:1::1 any
Brocade(config-std-nacl)# permit ipv6 host 2:2:2::2 any
Brocade(config-std-nacl)# permit ipv6 host 3:3:3::3 any
The RP shared address 1001:1 is used in the PIM domain. IP addresses 1:1:1:1, 2:2:2:2, and
3:3:3:3 are listed in the ACL that forms the self-inclusive Anycast RP set. Multiple Anycast RP
instances can be configured on a system; each peer with the same or different Anycast RP set.