Cisco Systems 3750E manual Monitoring and Maintaining IP Multicast Routing, 42-52

Chapter 42 Configuring IP Multicast Routing

Monitoring and Maintaining IP Multicast Routing

Monitoring and Maintaining IP Multicast Routing

These sections describe how to monitor and maintain IP multicast routing:

•Clearing Caches, Tables, and Databases, page 42-52

•Displaying System and Network Statistics, page 42-52

•Monitoring IP Multicast Routing, page 42-53

Clearing Caches, Tables, and Databases

You can remove all contents of a particular cache, table, or database. Clearing a cache, table, or database might be necessary when the contents of the particular structure are or suspected to be invalid.

You can use any of the privileged EXEC commands in Table 42-4to clear IP multicast caches, tables, and databases:

Table 42-4	Commands for Clearing Caches, Tables, and Databases
Command		Purpose
clear ip cgmp		Clear all group entries the Catalyst switches have
		cached.
clear ip dvmrp route {* route}		Delete routes from the DVMRP routing table.
clear ip igmp group [group-name		Delete entries from the IGMP cache.
group-address interface]
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.

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 usage and solve network problems. You can also display information about node reachability and discover the routing path that packets of your device are taking through the network.

You can use any of the privileged EXEC commands in Table 42-5to display various routing statistics:

Table 42-5 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.
	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
42-52			OL-9775-02