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Catalyst 3560 Switch Software Configuration Guide
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Chapter 19 Configuring IGMP Snooping and MVR
Displaying IGMP Snooping Information
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 19-4.
For more information about the keywords and options in these commands, refer to the command
reference for this release.
Table 19-4 Commands for Displaying IGMP Snooping Information
Command Purpose
show ip igmp snooping [vlan vlan-id] 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.
show ip igmp snooping multicast [count |
dynamic [count | group ip_address] | group
ip_address | user [count | group ip_address]]
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.
• group ip_address—Display characteristics of the multicast group
with the specified group IP address.
• user—Display only the user-configured multicast entries.
show ip igmp snooping multicast vlan vlan-id
[count | dynamic [count | group ip_address] |
group ip_address | user [count | group
ip_address]]
Display multicast table information for a multicast VLAN or about a
specific parameter for the VLAN:
• count—Display the total number of entries for the specified
command options instead of the actual entries.
• dynamic—Display entries learned through IGMP snooping.
• group ip_address—Display characteristics of the multicast group
with the specified group IP address.
• user—Display only the user-configured multicast entries.
show ip igmp snooping mrouter [vlan vlan-id] Display information on dynamically learned and manually configured
multicast router interfaces.
Note When you enable IGMP snooping, the switch automatically
learns the interface to which a multicast router is connected.
These are dynamically learned interfaces.
(Optional) Enter vlan vlan-id to display information for a single VLAN.
show ip igmp snooping querier [vlan vlan-id] Display information about the IGMP version that an interface supports.
(Optional) Enter vlan vlan-id to display information for a single VLAN.
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