Configuring PIM on a VPN allows a VPN multicast routing table to be established to guide multicast traffic forwarding.
MVPNs also use PIM as the multicast routing protocol. PIM neighbor relationships can be established between devices only after PIM-SM is enabled on interfaces. Then a VPN multicast routing table can be established to guide multicast traffic forwarding.
Perform the following steps on PEs' interfaces bound to VPN instances and on CEs' interfaces.
The system view is displayed.
Multicast routing is enabled. This command needs to be configured only on CEs.
The interface view is displayed.
PIM-SM is enabled.
The configuration is committed.