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Catalyst 3550 Multilayer Switch Command Reference
OL-8566-02
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
ip igmp snooping last-member-query-interval
ip igmp snooping last-member-query-interval
Use the ip igmp snooping last-member-query-interval global configuration command to enable the
Internet Group Management Protocol (IGMP) configurable-leave timer globally or on a per-VLAN
basis. Use the no form of this command to return to the default setting.
ip igmp snooping [vlan vlan-id] last-member-query-interval time
no ip igmp snooping [vlan vlan-id] last-member-query-interval
Syntax Descriptiont
Defaults The default timeout setting is 1000 milliseconds.
Command Modes Global configuration
Command History
Usage Guidelines When IGMP snooping is globally enabled, IGMP snooping is enabled on all the existing VLAN
interfaces. When IGMP snooping is globally disabled, IGMP snooping 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.
Configuring the leave timer on a VLAN overrides the global setting.
The IGMP configurable leave time is only supported on devices running IGMP Version 2.
The configuration is saved in NVRAM.
Examples This example shows how to globally enable the IGMP leave timer for 2000 milliseconds:
Switch(config)# ip igmp snooping last-member-query-interval 2000
This example shows how to configure the IGMP leave timer for 3000 milliseconds on VLAN 1:
Switch(config)# ip igmp snooping vlan 1 last-member-query-interval 3000
You can verify your settings by entering the show ip igmp snooping privileged EXEC command.
vlan vlan-id (Optional) Enable IGMP snooping and the leave timer on the specified
VLAN. The range is 1 to 1001 and 1006 to 4094.
time Interval time out in seconds. The range is 100 to 5000 milliseconds.
Release Modification
12.2(25)SEB This command was introduced.
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