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Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02
Chapter24 Configuring IGMP Snooping and MVR
Displaying IGMP Filtering and Throttling Configuration
Beginning in privileged EXEC mode, follow these steps to configure the throttling action when the
maximum number of entries is in the forwarding table:
To return to the default action of dropping the report, use the no ip igmp max-groups action interface
configuration command.
Displaying IGMP Filtering and Throttling Configuration
You can display IGMP profile characteristics, and you can display the IGMP profile and maximum
group configuration for all interfaces on the switch or for a specified int erface. You can also display the
IGMP throttling configuration for all interfaces on the switch or for a specified interface.
Use the privileged EXEC commands in Table 24-8 to display IGMP filtering and throttling
configuration:
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 interface interface-id Specify the physical interface to be configured, and enter interface
configuration mode. The interface can be a Layer 2 port that does not
belong to an EtherChannel group or an EtherChannel in terface. The
interface cannot be a trunk port.
Step3 ip igmp max-groups action {deny |
replace}
When an interface receives an IGMP report and the maximum number
of entries is in the forwarding table, specify the action that the interface
takes:
•deny—Drop the report.
•replace—Replace the existing group with the new group for which
the IGMP report was received.
Step4 end Return to privileged EXEC mode.
Step5 show running-config interface
interface-id
Verify the configuration.
Step6 copy running-config startup-config (Optional) Save your entries in the configuration file.
Table24-8 Commands for Displaying IGMP Filtering and Throttling Configuration
Command Purpose
show ip igmp profile [profile
number]
Displays the specified IGMP profile or all the IGMP profiles defined on the switch.
show running-config [interface
interface-id]
Displays the configuration of the specified interface or the configuration of all interfaces
on the switch, including (if configured) the maximum number of IGMP groups to w hich
an interface can belong and the IGMP profile applied to the interface.