Enabling IPv6 Multicast

In this implementation, IPv6 multicast works on VRs. By default, IPv6 multicast is disabled on a VR. To enable IPv6 multicast on a VR, access the context for a VR, and then issue the ipv6 multicast-routing command.

ipv6 multicast-routing

Use to enable IPv6 multicast routing on the VR.
By default, IPv6 multicast is disabled on the VR. In the disabled state, all multicast protocols are disabled, and the VR forwards no multicast packets.
Example
host1(config)#ipv6 multicast-routing
Use the no version to disable IPv6 multicast routing on the VR (the default).
See ipv6 multicast-routing.