Netgear GS728TXS GS728TXS/GS752TXS Software Administration Manual - Page 137
IGMP Snooping VLAN Configuration
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GS752TXS and GS728TXS Smart Switches Field Description Description The text description of this multicast table entry. Possible values are Management Configured, Network Configured, and Network Assisted. Interface The list of interfaces that are designated for forwarding (Fwd) and filtering (Flt) for the associated address. Use the buttons at the bottom of the screen to perform the following actions: • Click Clear to clear one or all of the IGMP Snooping entries. • Click Refresh to reload the screen and display the most current information. IGMP Snooping VLAN Configuration Use the IGMP Snooping VLAN Configuration screen to configure IGMP snooping settings for VLANs on the system. To configure IGMP snooping settings for VLANs: 1. Select Switching Multicast IGMP Snooping IGMP Snooping VLAN Configuration. 2. 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. • Host Timeout. Sets the value for group membership interval of IGMP snooping for the specified VLAN ID. The valid range is (Maximum Response Time + 1) to 3600 seconds. • Maximum Response Time. Sets the value for maximum response time of IGMP Snooping for the specified VLAN ID. Valid range is 1 to 25. The configured value must be less than the Group Membership Interval. The default is 10 seconds. • MRouter Timeout. Enter the amount of time that a switch will wait to receive a query on the VLAN before removing it from the list of VLANs with multicast routers attached. Enter a value between 0 and 3600 seconds. The default is 0 seconds, which means there is no expiration. 137