ADSL2+ Ethernet USB Combo Router - User Guide
Page 28 of 42
3.7.11 IGMP Multicast
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender to 1
recipient) or Broadcast (1 sender to everybody on the network). Multicast delivers IP packets to
just a group of hosts on the network. IGMP (Internet Group Multicast Protocol) is a session-layer
(layer-3) protocol used to establish membership in a Multicast group. It can register a router to
receive specific multicast traffic.
To enable Multicast, select the option Enable IGMP Multicast button and select the available
connection. See
Fig 1-22.
Figure 1-22 : IGMP Multicast