API Guide

show ip rpf
Displays reverse path forwarding (RPF) information.
Syntax
show ip rpf [vrf vrf-name] [summary]
Parameters
● vrf vrf-name—Enter the keyword vrf, then the name of the VRF.
● summary—RPF summary.
Default None
Command Mode EXEC
Usage
Information
PIM uses unicast routing to check the multicast source reachability. PIM examines the distance of each
route. The route with the shortest distance is the one that PIM selects for reachability.
Example
OS10# show ip rpf
RPF information for 101.1.1.10
RPF interface: vlan103
RPF neighbor: 2.1.1.1
RPF route/mask: 101.1.1.0/255.255.255.0
RPF type: Unicast
RPF information for 171.1.1.1
RPF interface: vlan105
RPF neighbor: 3.1.1.1
RPF route/mask: 171.1.1.0/255.255.255.0
RPF type: Unicast
Supported
Releases
10.4.3.0 or later
PIM-SM sample configuration
This section describes how to enable PIM-SM in the FHR, RP, and LHR nodes using the topology show in the following
illustration.
To enable PIM-SM, perform the following configurations on each of the nodes (FHR, RP, and LHR):
● Enable multicast routing on all the nodes using the ip multicast-routing command
● Enable PIM-SM on all the required Layer 3 interfaces of the nodes using the ip pim sparse-mode command
● Configure an RP address on every multicast enable node using the ip pim rp-address command
● Configure an IP address for each interface of the nodes in the PIM-SM topology
● Enable a routing protocol (OSPF) for route updates
Multicast
821