Netgear GS716Tv2 GS716Tv2/GS724Tv3 Software Admin Manual - Page 106
Configuring IGMP Snooping Queriers
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GS716Tv2 and GS724Tv3 Software Administration Manual Table 3-24. IGMP Snooping VLAN Configuration Fields (continued) Field Maximum Response Time MRouter Timeout Query Mode Query Interval Description Enter the amount of time in seconds that a switch will wait after sending a query on an interface because it did not receive a report for a particular group in that interface. This value must be less than the IGMP Query Interval time value. The range is 1 to (Group Membership Interval -1) seconds. Its value should be greater than the Group Membership Interval value. Sets the value for multicast router expiry time of IGMP Snooping for the specified VLAN ID. The valid range is 0-3600 seconds. Enable or disable the IGMP Querier Mode for the specified VLAN ID. Enter the value for IGMP Query Interval for the specified VLAN ID. Valid range is 1-18000 seconds. 2. Click Add to enable IGMP snooping on the specified VLAN. 3. Click Delete to disable IGMP snooping on the specified VLAN. 4. Click Cancel to cancel the configuration on the screen and reset the data on the screen to the latest value of the switch. 5. If you make any configuration changes, click Apply to apply the new settings to the switch. Configuration changes take effect immediately. Configuring IGMP Snooping Queriers IGMP snooping requires that one central switch or router periodically query all end-devices on the network to announce their multicast memberships. This central device is the 'IGMP querier'. The IGMP query responses, known as IGMP reports, keep the switch updated with the current multicast group membership on a port-by-port basis. If the switch does not receive updated membership information in a timely fashion, it will stop forwarding multicasts to the port where the end device is located. These pages enable you to configure and display information on IGMP snooping queriers on the network and, separately, on VLANs. The IGMP Snooping Querier folder contains links to the following features: • "IGMP Snooping Querier Configuration" on page 3-43 • "IGMP Snooping Querier VLAN Configuration" on page 3-44 • "IGMP Snooping Querier VLAN Status" on page 3-45 3-42 v1.0, July 2009 Configuring Switching Information