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3.9.1 IGMP Control
The Residential Gateway supports the IGMP snooping and the IGMP proxy. IGMP stands for
“Internet Group Management Protocol”. It is widely used by the multimedia services which rely on
the multicast protocol to conduct multimedia streams to the hosts (such as IPTVs). When a host
makes a request for the multimedia stream of a channel, it will send a request packet to join the
multicast group of this channel to the multicast router. And if the device between the host and the
multicast router supports the IGMP snooping or proxy, it will remember the port from which it
receives the request. Then, it will forward the multimedia stream to the host when it receives the
multimedia stream from the router. For details on the settings, please refer to the description of the
individual section below. Select
IGMP
Control
from the
IPTV
sub menu bar. Then,
IGMP
Control
screen page appears as follows:
