Ip Igmp Snooping - Cisco 4500M Command Reference Manual

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches

ip igmp snooping

To enable IGMP snooping, use the ip igmp snooping command. To disable IGMP snooping, use the no
form of this command.
Syntax Description
tcn
flood
query
count count
solicit
Defaults
IGMP snooping is e nabled.
Command Modes
Global configuration
Interface configuration
Command History Release
12.1(8a)EW
12.1(11)EW
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)#
78-16201-01
ip igmp snooping [tcn {flood query count count | query solicit}]
no ip igmp snooping [tcn {flood query count count | query solicit}]
(Optional) Specifies topology change configurations.
(Optional) Specifies flooding the spanning tree table to the network when a topology
change occurs.
(Optional) Specifies the TCN query configurations.
(Optional) Specifies how often the spanning tree table is flooded; valid values are
from 1 to 10.
(Optional) Specifies an IGMP general query.
Modification
Support for this command was introduced on the Catalyst 4500 series switch.
Support for flooding the spanning tree table was added.
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
ip igmp snooping
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