40-52
Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
Chapter 40 Configuring IP Multicast Routing
Monitoring and Maintaining IP Multicast Routing
Displaying System and Network Statistics
You can display specific statistics, such as the contents of IP routing tables, caches, and databases.
Note This release does not support per-route statistics.
You can display information to learn resource utilization and solve network problems. You can also
display information about node reachability and discover the routing path your device’s packets are
taking through the network.
You can use any of the privileged EXEC commands in Table 40-5 to display various routing statistics:
clear ip igmp group [group-name |
group-address | interface]
Delete entries from the IGMP cache.
clear ip mroute {* | group [source]} Delete entries from the IP multicast routing table.
clear ip pim auto-rp rp-address Clear the Auto-RP cache.
clear ip sdr [group-address | “session-name”] Delete the Session Directory Protocol Version 2
cache or an sdr cache entry.
Table 40-4 Commands for Clearing Caches, Tables, and Databases (continued)
Command Purpose
Table 40-5 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 dvmrp route [ip-address] Display the entries in the DVMRP routing table.
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.
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