D-Link DSL-3788

58D-Link DSL-3788 User Manual
Section 4 - Conguration
IGMP
IGMP Snooping: Enable and disable Internet Group Management Protocol
(IGMP) snooping to build multicast tables.
Wan Proxy: Check the box to enable the Wan proxy on each interface.
IGMP Version: Select the IGMP version to use either V1/V2 or V3.
Click Save when you are done.
The Internet Group Management Protocol (IGMP) Transmission allows for
the transmission of identical content, such as multimedia, from a source to a
number of recipients.