Using a multicast topology instance for multicast services applies to both PIM-SM intra-domain and inter-domain scenarios.
Before enabling multicast services to run in a specified multicast topology instance, you must configure the multicast topology instance in the system view.
For the configuration details, see Configuring IPv4 Multi-topology. Ensure that topology-name is multicast.
The system view is displayed.
Multicast services are enabled to run in a multicast topology instance.
The configuration is committed.