Netgear GS724Tv4 Software Administration Manual - Page 115
IGMP Snooping Querier, IGMP Snooping Querier Configuration
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GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches IGMP Snooping Querier 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 screens enable you to configure and display information on IGMP snooping queriers on the network and, separately, on VLANs. The IGMP Snooping Querier menu contains links described in the following sections. • IGMP Snooping Querier Configuration • IGMP Snooping Querier VLAN Configuration • IGMP Snooping Querier VLAN Status IGMP Snooping Querier Configuration Use this screen to enable or disable the IGMP snooping querier feature, specify the IP address of the router to perform the querying, and configure the related parameters. To configure IGMP snooping querier settings: 1. Select Switching > Multicast > IGMP Snooping Querier > IGMP Snooping > Querier Configuration. 2. Next to the Querier Admin Mode field, enable or disable the administrative mode for IGMP snooping querier. 3. In the Snooping Querier Address field, specify the IP address to be used as source address in periodic IGMP queries. This address is used when no address is configured on the VLAN on which the query is being sent. 4. In the IGMP Version field, specify the IGMP protocol version used in periodic IGMP queries. 5. In the Query Interval field, specify the time interval in seconds between periodic queries sent by the snooping querier. The Query Interval must be a value in the range of 1-1800 seconds. The default value is 60. 6. In the Querier Expiry Interval field, specify the time interval in seconds after which the last querier information is removed. The Querier Expiry Interval must be a value in the range of 60-300 seconds. The default value is 125. 7. Click the Apply button. Configuring Switching 115