Configuring a Multicast Static Route

A multicast static route specifies a reverse path forwarding (RPF) interface or RPF neighbor for multicast packets from a specified multicast source. Configure a multicast static route to:

• Change an RPF route.

  If you want an interface to receive multicast data packets from a specified multicast source but the interface is not the RPF interface for that multicast source, configure a multicast static route to specify this interface as the RPF interface for the multicast source. When the switch receives multicast data packets from the multicast source, it performs an RPF check using the configured RPF route. Packets sent from the source to the switch through other interfaces fail the RPF check.

• Connect RPF routes.

  If the unicast route on a network segment is incomplete, multicast packets cannot be forwarded because there is no RPF route. For example, when two adjacent devices run different routing protocols but the routing protocols do not import routes from each other, packets cannot be forwarded between the two devices. In this case, you can configure RPF static routes on the devices. The devices can perform an RPF check using the specified RPF interfaces so that multicast packets can be forwarded successfully.