IPv6 Multicast Routing with BSR

R1(config)#ipv6 routing
R1(config)#ipv6 pim bsr candidate rp <IPv6 Address>
R1(config)#ipv6 pim bsr candidate bsr <IPv6 Address> priority X


BSR and RP can't be on a single router.

Multicast Source Discovery Protocol (MSDP)

• Anycast RP
• load balancing between RPs
• faster recovery after RP failure (IGP convergence time)
• Inter-domain Multicast Routing
• send Source Active (SA) messages over TCP every 60s
• configuration: ip msdp peer <peer-address>

PIM Modes

Protocol Independent Multicast - Dense Mode (PIM-DM): uses Source Tree / Shared Path Tree (SPT)
Protocol Independent Multicast - Sparse Mode (PIM-SM): uses Shared Tree / Root Path Tree (RPT)

Disable PIM-SM Switchover to SPT

ip pim [vrf vrf-name] spt-threshold {kbps | infinity} [group-list access-list]

infinity: Causes all sources for the specified group to use the shared tree.

http://www.cisco.com/en/US/docs/ios/ipmulti/command/reference/imc_04.html#wp1049494