Netgear GSM7252PS ProSafe Managed Switch Web Management User Manual - Page 180
IGMP Snooping Querier, IGMP Snooping Querier Configuration
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ProSafe® Gigabit L3 Managed Stackable Switches Software Administration Manual 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. IGMP Snooping Querier Configuration Use this menu to configure the parameters for IGMP Snooping Querier. Note that only a user with Read/Write access privileges may change the data on this screen. To access this page, click Switching Multicast IGMP Snooping Querier Configuration. 180 | Chapter 3. Configuring Switching Information