Clearing Caches, Tables, And Databases; Displaying System And Network Statistics - Cisco WS-C3750-48PS-S Software Configuration Manual

Chapter 36 Configuring 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 36-4 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.
This release does not support per-route statistics.
Note
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 36-5 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]]
78-16180-02
Monitoring and Maintaining IP Multicast Routing
Table 36-4 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 36-5 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 switch and that were learned
through IGMP.
Display multicast-related information about an
interface.
Display the contents of the IP fast-switching
cache.
Catalyst 3750 Switch Software Configuration Guide
36-51