restricting ipv6 pim rp to a specific group only

[puneet24_in]

Hi,

I want to restrict the IPv6 pim rp to a particular group. No other group should be serviced by this pim rp.

How to achieve this?

The topology is as below:

R1(f0/0) ----- (f0/0)R2(f0/1) ------(f0/1)R3(f0/0)-----------(f0/0)R4(f0/1)

I want to configure R1 as the ipv6 pim rp. it should service only group FF08::1234:4567. I have configured the global ipv6 add of R1 (f0/0) as the pim rp add on all routers.

I have configured R4 as the receiver of the group FF08::1234:4567.

[abdel_n]

Hi puneet24,

Configure the PIM RP address of your router R1 fa0/0 IPv6 address for the multicast group FF08::1234:4567 only:

ipv6 access-list mygroup
 permit ipv6 any FF08::1234:4567
ipv6 pim rp-address  mygroup

http://www.cisco.com/en/US/docs/ios-xml/ios/ipv6/command/ipv6-i4.html#GUID-67D6A2B9-259F-4335-92C4-2D45A1FAE67A

[Marcin Latosiewicz]

A few more things adding to Abdel's post:

Assuming this is not bidir. You can advertise R1 as RP for only particular group:

http://www.cisco.com/en/US/docs/ios-xml/ios/ipv6/command/ipv6-i4.html#GUID-8A16475D-EBA7-4EDE-8473-BE74A962A80A

Or announced RP mappings from BSR.

http://www.cisco.com/en/US/docs/ios-xml/ios/ipv6/configuration/15-2mt/ip6-multicast.html#GUID-F44AA3FA-8E0A-4353-BDF5-6D1785AEC52C

You can also play around with dropping register messages:

http://www.cisco.com/en/US/docs/ios-xml/ios/ipv6/command/ipv6-i4.html#GUID-D801EA3B-C888-447B-9C32-EFF4DBDE69B3