Displaying Igmp Snooping Information - Cisco Catalyst 3560-X Software Configuration Manual

Displaying IGMP Snooping Information

Beginning in privileged EXEC mode, follow these steps to disable IGMP report suppression:
Command
Step 1
configure terminal
Step 2
no ip igmp snooping report-suppression
Step 3 end
Step 4 show ip igmp snooping
Step 5 copy running-config startup-config
To re-enable IGMP report suppression, use the ip igmp snooping report-suppression global
configuration command.
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.
Table 1-4 Commands for Displaying IGMP Snooping Information
Command
show ip igmp snooping [vlan vlan-id]
show ip igmp snooping groups [count |dynamic
[count] | user [count]]
show ip igmp snooping groups vlan vlan-id
[ip_address | count | dynamic [count] |
user[count]]
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
1-16
Purpose
Enter global configuration mode.
Disable IGMP report suppression.
Return to privileged EXEC mode.
Verify that IGMP report suppression is disabled.
(Optional) Save your entries in the configuration file.
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.
The VLAN ID range is 1 to 1001 and 1006 to 4094.
Display multicast table information for the switch or about a specific
parameter:
count—Display the total number of entries for the specified
•
command options instead of the actual entries.
dynamic—Display entries learned through IGMP snooping.
•
user—Display only the user-configured multicast entries.
•
Display multicast table information for a multicast VLAN or about a
specific parameter for the VLAN:
vlan-id—The VLAN ID range is 1 to 1001 and 1006 to 4094.
•
count—Display the total number of entries for the specified
•
command options instead of the actual entries.
dynamic—Display entries learned through IGMP snooping.
•
ip_address—Display characteristics of the multicast group with the
•
specified group IP address.
user—Display only the user-configured multicast entries.
•
Chapter 1 Configuring IGMP Snooping and MVR
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