Cisco Catalyst 3750-E

46-63
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-08
Chapter 46 Configuring IP Multicast Routing
Monitoring and Maintaining IP Multicast Routing
Monitoring and Maintaining IP Multicast Routing
• Clearing Caches, Tables, and Databases, page 46-63
• Displaying System and Network Statistics, page 46-63
• Monitoring IP Multicast Routing, page 46-64
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 Ta
ble 46-5 to clear IP multicast caches, tables,
and databases:
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
info
rmation 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 Ta
ble 46-6 to display various routing statistics:
Ta b l e 46-5 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 {* | ro
ute} Delete routes from the DVMRP routing table.
clear ip igmp group [gr
oup-name |
group-address | interface]
Delete entries from the IGMP cache.
clear ip mroute {* | gr
oup [source]} Delete entries from the IP multicast routing table.
clear ip pim auto-rp rp
-address Clear the auto-RP cache.
clear ip sdr [gr
oup-address | “session-name”] Delete the Session Directory Protocol Version 2 cache or an sdr cache
entry.
Ta b l e 46-6 Commands for Displaying System and Network Statistics
Command Purpose
ping [g
roup-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 [gr
oup-name |
group-address | type number]
Display the multicast groups that are directly connected to the switch and
that were learned through IGMP.