Ip Igmp Snooping - Cisco Catalyst 2960 Command Reference Manual
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- Configuration manual (2288 pages) ,
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Chapter 2
Catalyst 2960 Switch Cisco IOS Commands
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
Defaults
IGMP snooping is globally enabled on the switch.
IGMP snooping is enabled on VLAN interfaces.
Command Modes
Global configuration
Command History
Release
12.2(25)FX
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
snooping.
Examples
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.
78-16882-01
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 2960 Switch Command Reference
ip igmp snooping
2-113
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