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| Sun Ethernet Fabric Operating System ### IGS Administration Guide

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## Enable IGS on a Specific VLAN Interface

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

1. Enter the configuration mode for the VLAN interface.

       SEFOS# configure terminal
       SEFOS(config)# vlan 2

2. Enable IGS on the interface.

       SEFOS(config-vlan)# ip igmp snooping
       SEFOS(config-vlan)# end

3. Review the configuration.

       SEFOS# show ip igmp snooping vlan 2

       Snooping VLAN Configuration for the VLAN 2
         IGMP Snooping enabled
         IGMP configured version is V3
         Fast leave is disabled
         Snooping switch is configured as Non-Querier
         Snooping switch is acting as Non-Querier
         Query interval is 125 seconds
         Port Purge Interval is 260 seconds
         Max Response Code is 100, Time is 10 seconds

   When IGS is enabled and disabled globally, but not enabled on `VLAN 2`, the `show` command produces:

       Snooping VLAN Configuration for the VLAN 2
         IGMP Snooping is disabled
         IGMP configured version is V3
         Fast leave is disabled
         Snooping switch is configured as Non-Querier
         Snooping switch is acting as Non-Querier
         Query interval is 125 seconds
         Port Purge Interval is 260 seconds
         Max Response Code is 100, Time is 10 seconds

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