Clearing Caches, Tables, And Databases - Cisco Catalyst 3550 series Software Configuration Manual

Monitoring and Maintaining IP Multicast Routing

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
and databases:
Table 34-3 Commands for Clearing Caches, Tables, and Databases
Command
clear ip cgmp
clear ip dvmrp route {* | route}
clear ip igmp group [group-name |
group-address | interface]
clear ip mroute {* | group [source]}
clear ip pim auto-rp rp-address
clear ip sdr [group-address | "session-name"]
Displaying System and Network Statistics
You can display specific statistics such as the contents of IP routing tables, caches, and databases. You
can display information to determine 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 34-4 Commands for Displaying System and Network Statistics
Command
ping [group-name | group-address]
show ip dvmrp route [ip-address]
show ip igmp groups [group-name |
group-address | type number]
show ip igmp interface [type number]
show ip mcache [group [source]]
show ip mpacket [source-address | name]
[group-address | name] [detail]
show ip mroute [group-name | group-address]
[source] [summary] [count] [active kbps]
Catalyst 3550 Multilayer Switch Software Configuration Guide
34-58
Chapter 34 Configuring IP Multicast Routing
Table 34-3 to clear IP multicast caches, tables,
Purpose
Clear all group entries the Catalyst switches have
cached.
Delete routes from the DVMRP routing table.
Delete entries from the IGMP cache.
Delete entries from the IP multicast routing table.
Clear the Auto-RP cache.
Delete the Session Directory Protocol Version 2
cache or an sdr cache entry.
Table 34-4 to display various routing statistics:
Purpose
Send an ICMP Echo Request to a multicast group
address.
Display the entries in the DVMRP routing table.
Display the multicast groups that are directly
connected to the multilayer switch and that were
learned through IGMP.
Display multicast-related information about an
interface.
Display the contents of the IP fast-switching
cache.switching, displaying
Display the contents of the circular cache-header
buffer.
Display the contents of the IP multicast routing
table.
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