Ip Igmp Snooping - Cisco catalyst 3750 Command Reference Manual

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ip igmp snooping

Use the ip igmp snooping global configuration command to globally enable Internet Group

Management Protocol (IGMP) snooping on the switch or to enable it on a per-VLAN basis. Use the no

form of this command to return to the default setting.

Syntax Description

vlan vlan-id

IGMP snooping is globally enabled on the switch.

IGMP snooping is enabled on VLAN interfaces.

Command Modes

Global configuration

Command History

Usage Guidelines

When IGMP snooping is enabled globally, it is enabled in all the existing VLAN interfaces. When IGMP

snooping is globally disabled, it is disabled on all the existing VLAN interfaces.

VLAN IDs 1002 to 1005 are reserved for Token Ring and FDDI VLANs and cannot be used in IGMP

This example shows how to globally enable IGMP snooping:

Switch(config)# ip igmp snooping

This example shows how to enable IGMP snooping on VLAN 1:

Switch(config)# ip igmp snooping vlan 1

You can verify your settings by entering the show ip igmp snooping privileged EXEC command.

Catalyst 3750 Switch Command Reference

ip igmp snooping [vlan vlan-id]

no ip igmp snooping [vlan vlan-id]

(Optional) Enable IGMP snooping on the specified VLAN. The range is 1 to

1001 and 1006 to 4094.

Modification

This command was introduced.

Catalyst 3750 Switch Cisco IOS Commands

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