Using a unicast topology or the base topology instance for IPv6 multicast services is applicable only to the PIM-SM intra-domain scenario.
Before enabling multicast services to run in a specified unicast topology instance, you must configure a multicast topology instance and a unicast topology instance in the system view.
For configuration details, see Configuring IPv6 Multi-Topologies. Make sure that topology-name is multicast.
The system view is displayed.
The IPv6 multicast multi-topology view is displayed.
IPv6 multicast services are enabled to run in a unicast topology instance or the base topology instance.
The configuration is committed.