NETGEAR GS748T - IGMP Snooping Querier

121
GS748T Smart Switch
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 sn
ooping queriers on
the network and, separately, on VLANs.
The IGMP Snooping Querier feature contains links to the
following pages:
• IGMP Snooping Querier Configuration on p
age 121
• IGMP Snooping Querier VLAN Configuration o
n page 123
• IGMP Snooping Querier VLAN Status on p
age 124
IGMP Snooping Querier Configuration
Use this page 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 access this page, click Switching
 Multicast  IGMP Snooping Querier  IGMP Snooping
 Querier Configuration.
To configure IGMP Snooping Querier settings:
1. Fro
m the Querier Admin Mode field, enable or disable the administrative mode for
IGMP Snooping Querier.