Users Guide

Table Of Contents
show ip pim rp mapping
Displays the Anycast RP mapping information for a multicast group.
Syntax
show ip pim [vrf vrf-name] rp mapping
Parameters vrf vrf-nameEnter the keyword vrf, then the name of the VRF to display Anycast RP information
for a specific VRF. If VRF name is not specified, this command displays information for the default VRF.
Default Not configured
Command Mode EXEC
Usage
Information
None
Example
OS10# show ip pim rp mapping
Anycast-RP 100.1.1.1 members:
192.10.1.1* 192.10.2.2
Group(s) : 224.0.0.0/4
RP : 1.1.1.1, v2
Info source: 192.10.2.2, via bootstrap, priority 192
expires: 00:02:15
Supported
Releases
10.5.2.0 or later
VLT multicast routing
OS10 supports multicast routing in a VLT domain for IPv4 networks. This feature provides resiliency to multicast-routed traffic
when a VLT peer node or the VLTi link goes down.
Multicast routing table synchronization
Multicast routing protocols do not exchange multicast routes between peer VLT nodes. Each VLT node runs the PIM protocol
independent of the peer VLT node. Hence, the PIM states do not synchronize between the nodes. However, OS10 synchronizes
the multicast routing table with routes that the PIM learns on each of the nodes between the peer VLT nodes. Multicast routing
table synchronization:
Avoids unoptimized forwarding over VLTi links. Table synchronization allows the incoming traffic sent to the wrong peer to
be routed locally within the device.
Provides traffic resiliency in the event of a VLT node failure. The traffic is forwarded until the PIM protocol reconverges and
builds a new tree.
IGMP message synchronization
VLT nodes use the VLTi link to synchronize IGMP messages across their peers. Any IGMP join message that is received on one
of the VLT nodes synchronizes with the peer node. Therefore, the IGMP tables are identical in a VLT domain.
Egress mask
When multicast traffic from the source arrives at one of the VLT peer nodes, it is sent to the downstream receivers using local
routing or switching and over the VLTi link. The port block at the VLTi link of the peer node drops the multicast traffic. This port
block, also known as the egress mask, avoids duplicate traffic forwarding on the VLT port channel by both VLT nodes. However,
if the receiver is connected to the peer node, the system forwards the multicast traffic to the receiver.
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Multicast