Layer 3 Routing Commands 1572no ip mroute source-address mask• source-address — The IP address of the multicast data source.• mask — The IP subnet mask of the multicast data source.• rpf-address — The IP address of the next hop towards the source.• preference — The cost of the route (Range: 1 - 255).Default ConfigurationThere is no default configuration for this command.Command ModeGlobal Configuration modeUser GuidelinesThe source IP address must contain 0's for the address bits corresponding the0's in the netmask.Multicast source data is flooded/forwarded by default in the VLAN on whichit is received. For this reason, multi-access VLANs are not recommended formulticast routing interfaces.Exampleconsole(config)#ip mroute 1.1.0.0 255.255.0.0 192.168.20.1 34ip multicast-routingUse the ip multicast-routing command in Global Configuration mode to setthe administrative mode of the IP multicast forwarder in the router to active.It enables both IPv4 and IPv6 multicast routing. For multicast routing tobecome operational, IGMP must be currently enabled. Enabling PIM orDVMRP enables IGMP.Syntaxip multicast-routingno ip multicast-routing
