• Use to enable IP multicast routing on the VR.
• By default, IP multicast is disabled on the VR. In the disabled state, all multicast
protocols are disabled, and the VR forwards no multicast packets.
• Example
host1(config)#ip multicast-routing
• Use the no version to disable IP multicast routing on the VR (the default).
• See ip multicast-routing.
Defining Static Routes for Reverse-Path Forwarding
Use the ip rpf-route command to define reverse-path forwarding (RPF) to verify that a
router receives a multicast packet on the correct incoming interface.
ip rpf-route
• Use to customize static routes that the router may use for RPF.
• Specify the IP address and subnet mask of the destination network.
• Specify either a next-hop IP address or an interface type and specifier, such as atm 3/0.
For details about interface types and specifiers, see Interface Types and Specifiers in
JunosE Command Reference Guide.
• Optionally, specify the distance (number of hops) to the next-hop address.
• Optionally, specify a route's tag number to identify a particular route in the routing
table.
• Example
host1(config)#ip rpf-route 11.1.0.0 255.255.0.0 atm4/1.1 56 tag 25093
• Use the no version to remove the static route.
• See ip rpf-route.
Displaying Available Routes for Reverse-Path Forwarding
Use the show ip rpf-route command to display all available routes, only the routes to a
particular destination, or routes associated with a specific unicast protocol that the router
can use for Reverse-Path Forwarding (RPF).
show ip rpf-route
• Use to display routes that the router can use for RPF.
• Specify the IP address and the network mask to view routes to a particular destination.
• Specify a unicast routing protocol to view routes associated with that protocol.
• Field descriptions
7Copyright © 2010, Juniper Networks, Inc.
Chapter 1: Configuring IPv4 Multicast
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