Cisco 4500M Command Reference

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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
78-16201-01
Chapter2Cisco IOS Commands for the Catalyst 4500 Series Switches
ip igmp snooping
ip igmp snooping
To enable IGMP snooping, use the ip igmp snooping command. To disable IGMP snooping, use the no
form of this command.
ip igmp snooping [tcn {flood query count count | query solicit}]
no ip igmp snooping [tcn {flood query count count | query solicit}]
Syntax Description
Defaults IGMP snooping is enabled.
Command Modes Global configuration
Interface configuration
Command History
Usage Guidelines The tcn flood option applies only to Layer 2 switch ports and EtherChannels; it does not apply to routed
ports, VLAN interfaces, or Layer 3 channels.
The ip igmp snooping command is disabled by default on multicast routers.
Note You can use the tcn flood option in Interface configuration mode.
Examples This example shows how to enable IGMP snooping:
Switch(config)# ip igmp snooping
Switch(config)#
This example shows how to disable IGMP snooping:
Switch(config)# no ip igmp snooping
Switch(config)#
tcn (Optional) Specifies topology change configurations.
flood (Optional) Specifies flooding the spanning tree table to the network when a topology
change occurs.
query (Optional) Specifies the TCN query configurations.
count count (Optional) Specifies how often the spanning tree table is flooded; valid values are
from 1 to 10.
solicit (Optional) Specifies an IGMP general query.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
12.1(11)EW Support for flooding the spanning tree table was added.

Cisco 4500M Specifications

General

Brand	Cisco
Model	4500M
Category	Network Router
Language	English