Configuring IPv6 PIM Anycast RP

IPv6 PIM Anycast RP can be configured to map RP and Anycast RPs.
Note: MSDP and Anycast RP do not interoperate. If transitioning from MSDP to Anycast RP or vice versa, all RPs in the network must be configured for the same method of RP peering; either Anycast RP or MSDP.
  1. Enter global configuration mode. 
    device# configure terminal
  2. Enable IPv6 PIM. 
    device(config)# ipv6 router pim
  3. Configure an RP address. 
    device(config-ipv6-pim-router)# rp-address 1001::1
    The RP address is shared among multiple IPv6 PIM routers.
  4. Configure IPv6 PIM Anycast RP. 
    device(config-ipv6-pim-router)# anycast-rp 1001::1 my-anycast-rp-set-acl
    The anycast-rp command defines the mapping of the RP and the Anycast RP peers using a host-based simple ACL to specify the address of the Anycast RP set.
  5. Exit to privileged EXEC mode. 
    device(config-ipv6-pim-router)# end
  6. Display information for an IPv6 PIM Anycast RP interface. 
    device> show ipv6 pim anycast-rp

    Number of Anycast RP: 1
    Anycast RP: 1001::1
      ACL ID: 200
      ACL Name: my-anycast-rp-set
      ACL Filter: SET
      Peer List:
       1:1:1::1
       2:2:2::2
       3:3:3::3

The example shown in the following figure is an IPv6 PIM Anycast-enabled network with three RPs and one PIM-FH router connecting to its active source and local receiver. Loopback 2 in RP1, RP2, and RP3 each have the same IPv6 addresses 1001:1. Loopback 3 in RP1, RP2, and RP3 each have separate IPv6 address configured to communicate with their peers in the Anycast RP set.

The RP shared address 1001:1 is used in the PIM domain. IPv6 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.

Example of an IPv6 PIM Anycast RP Network

Note: The IPv6 PIM Anycast CLI applies to only IPv6 PIM routers running RP. All deny statements in the my-anycast-rp-set ACL are ignored.

The following example is a configuration of IPv6 PIM Anycast RP 1001::1.The example avoids using the loopback 1 interface when configuring IPv6 PIM Anycast RP because the loopback 1 address could be used as a router-id. An IPv6 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 the preceding figure for a view of the IPv6 PIM Anycast RP Network.

The RP shared address 1001:1 is used in the IPv6 PIM domain. IPv6 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. 

device(config)# interface loopback 2
device(config-lbif-2)# ipv6 address 1001::1/96
device(config-lbif-2)# ipv6 pim-sparse
device(config-lbif-2)# interface loopback 3
device(config-lbif-3)# ipv6 address 1:1:1::1/96
device(config-lbif-3)# ipv6 pim-sparse
device(config-lbif-3)# ipv6 router pim
device(config-ipv6-pim-router)# rp-address 1001::1
device(config-ipv6-pim-router)# anycast-rp 1001::1 my-anycast-rp-set
device(config-ipv6-pim-router)# ipv6 access-list my-anycast-rp-set
device(config-ipv6-access-list my-anycast-rp-set)# permit ipv6 host 1:1:1::1 any
device(config-ipv6-access-list my-anycast-rp-set)# permit ipv6 host 2:2:2::2 any
device(config-ipv6-access-list my-anycast-rp-set)# permit ipv6 host 3:3:3::3 any
Parent topic: IPv6 PIM Anycast RP