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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 42 Configuring IP Multicast Routing
Monitoring and Maintaining IP Multicast Routing
You can use any of the privileged EXEC commands in Table 42-7 to display various routing statistics:
Monitoring IP Multicast Routing
You can use the privileged EXEC commands in Table 42-8 to monitor IP multicast routers, packets, and
paths:
Ta b l e 42-7 Commands for Displaying System and Network Statistics
Command Purpose
ping [group-name | group-address] Send an ICMP Echo Request to a multicast group address.
show ip igmp groups [group-name |
group-address | type number]
Display the multicast groups that are directly connected to the switch and
that were learned through IGMP.
show ip igmp interface [type number] Display multicast-related information about an interface.
show ip mcache [group [source]] Display the contents of the IP fast-switching cache.
show ip mpacket [source-address | name]
[group-address | name] [detail]
Display the contents of the circular cache-header buffer.
show ip mroute [group-name | group-address]
[source] [summary] [count] [active kbps]
Display the contents of the IP multicast routing table.
show ip pim interface [type number] [count] Display information about interfaces configured for PIM.
show ip pim neighbor [type number] List the PIM neighbors discovered by the switch.
show ip pim rp [group-name | group-address] Display the RP routers associated with a sparse-mode multicast group.
show ip rpf {source-address | name} Display how the switch is doing Reverse-Path Forwarding (that is, from
the unicast routing table or static mroutes).
show ip sdr [group | “session-name” | detail] Display the Session Directory Protocol Version 2 cache.
Ta b l e 42-8 Commands for Monitoring IP Multicast Routing
Command Purpose
mrinfo [hostname | address] [source-address |
interface]
Query a multicast router or multilayer switch about which neighboring
multicast devices are peering with it.
mstat source [destination] [group] Display IP multicast packet rate and loss information.
mtrace source [destination] [group] Trace the path from a source to a destination branch for a multicast
distribution tree for a given group.
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