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

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## Enable IGS Globally

By default, IGS is disabled globally. To enable IGS, GMRP must first be disabled.

1. Enter Global Configuration mode, and disable GMRP.

       SEFOS# configure terminal
       SEFOS(config)# set gmrp disable

2. Enable IGS globally.

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

3. Review the configuration.

       SEFOS# show ip igmp snooping globals

       Snooping Configuration
       -----------------------------
       IGMP Snooping globally enabled
       IGMP Snooping is operationally enabled
       IGMP Snooping Enhanced mode is disabled
       Transmit Query on Topology Change globally disabled
       Multicast forwarding mode is MAC based
       Proxy globally disabled
       Proxy reporting globally enabled
       Filter is disabled
       Router port purge interval is 125 seconds
       Port purge interval is 260 seconds
       Report forward interval is 5 seconds
       Group specific query interval is 2 seconds
       Reports are forwarded on router ports
       Group specific query retry count is 2
       Multicast VLAN disabled
       Leave config level is Vlan based

4. Send an IGMP V2 report to group `227.2.2.2`, which is learned on the switch.

       SEFOS# show ip igmp snooping forwarding-database

        Vlan  MAC-Address          Ports
        ----  -----------------    -----
           1  01:00:5e:02:02:02    Ex0/1

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