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GS108T and GS110TP Smart Switch Software Administration Manual
IGMP Snooping VLAN Configuration
Use the IGMP Snooping VLAN Configuration page to configure IGMP snooping settings for
VLANs on the system.
To access the IGMP Snooping VLAN Configuration page, click Switching Multicast IGMP
Snooping IGMP Snooping VLAN Configuration.
Figure 3-32
To configure IGMP snooping settings for VLANs:
1. To enable IGMP snooping on a VLAN, enter the VLAN ID in the appropriate field and
configure the IGMP Snooping values:
•
Fast Leave Admin Mode. Enable or disable the IGMP Snooping Fast Leave Mode for the
specified VLAN ID. Enabling fast-leave allows the switch to immediately remove the
layer 2 LAN interface from its forwarding table entry upon receiving an IGMP leave
message for that multicast group without first sending out MAC-based general queries to
the interface.You should enable fast-leave admin mode only on VLANs where only one
host is connected to each layer 2 LAN port. This prevents the inadvertent dropping of the
other hosts that were connected to the same layer 2 LAN port but were still interested in
receiving multicast traffic directed to that group. Also, fast-leave processing is supported
only with IGMP version 2 hosts.
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v1.0, April 2010
Configuring Switching Information
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