Netgear GSM7212P GSM5212P/GSM7212P/GSM7212F/GSM7224P User Manual - Page 136
IGMP Snooping Querier, Interface, VLAN ID, Multicast Router
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Web Management User Guide 1. Use Interface to select the interface for which you want Multicast Router to be enabled or to be displayed. 2. Use VLAN ID to select the VLAN ID for which the Multicast Router Mode is to be Enabled or Disabled. 3. Use Multicast Router to enable or disable multicast router for the Vlan ID. 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 pages enable you to configure and display information on IGMP snooping queriers on the network and, separately, on VLANs. 136