Displaying Igmp Snooping Information - Cisco Catalyst 2950 Software Configuration Manual

Chapter 20 Configuring IGMP Snooping and MVR
Command
Step 9 show ip igmp snooping vlan vlan-id
Step 10 copy running-config startup-config
This example shows how to set the IGMP snooping querier source address to 10.0.0.64 and to verify the
configuration:
Switch# configure terminal
Switch(config)# ip igmp snooping querier 10.0.0.64
Switch(config)# end
This example shows how to set the IGMP snooping querier maximum response time to 25 seconds and
to verify the configuration:
Switch# configure terminal
Switch(config)# ip igmp snooping querier query-interval 25
Switch(config)# end
This example shows how to set the IGMP snooping querier timeout to 60 seconds and to verify the
configuration:
Switch# configure terminal
Switch(config)# ip igmp snooping querier timeout expiry 60
Switch(config)# end
This example shows how to set the IGMP snooping querier feature to version 2 and to verify the
configuration:
Switch# configure terminal
Switch(config)# no ip igmp snooping querier version 2
Switch(config)# end

Displaying IGMP Snooping Information

You can display IGMP snooping information for dynamically learned and statically configured router
ports and VLAN interfaces. You can also display MAC address multicast entries for a VLAN configured
for IGMP snooping.
To display IGMP snooping information, use one or more of the privileged EXEC commands in
Table
reference for this release. For examples of output from the commands in
reference for this release.
Table 20-4 Commands for Displaying IGMP Snooping Information
Command
show ip igmp snooping [vlan vlan-id]
show ip igmp snooping group [vlan vlan-id]
78-11380-12
Purpose
(Optional) Verify that the IGMP snooping querier is enabled on the
VLAN interface.
(Optional) Save your entries in the configuration file.
20-4. For more information about the keywords and options in these commands, see the command
Purpose
Display the snooping configuration information for all VLANs on the
switch or for a specified VLAN.
(Optional) Enter vlan vlan-id to display information for a single VLAN.
Display information about the IGMP multicast groups, the compatibility
mode, and the ports that are associated with each group.
(Optional) Enter vlan vlan-id to display information for a single VLAN.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Displaying IGMP Snooping Information
Table 20-4, see the command
20-15