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NETGEAR 7000 Series Managed Switch Administration Guide Version 7.3
However, the IGMP snooping operation usually requires an extra network device—normally a router—that
can generate an IGMP membership query and solicit interested nodes to respond. With the build-in IGMP
Querier feature inside the switch, such an external device is no longer needed.
Figure 15-6
Since the IGMP querier is designed to work with IGMP snooping, it is necessary to enable IGMP snooping
when using it.The following figure shows a network application for video streaming service using the IGMP
querier feature.
Enable IGMP Querier
The example is shown as CLI commands and as a Web interface procedure.
CLI: Enabling IGMP Querier
Use the following CLI commands to set up the switch to generate IGMP querier packet for a designated
VLAN. The IGMP packet will be transmitted to every ports on the VLAN. The following example enables
15-8
IGMP Snooping and Querier
v1.0, November 2008
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