IGMP
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to
establish membership in a Multicast group - it is not used to carry user data.
There are three versions of IGMP. IGMP version 2 and 3 are improvements over
version 1, but IGMP version 1 and 2 are still in wide use.
Finding Out More
See
Section 6.5 on page 76
6.1.3 Before You Begin
You need to know your Internet access settings such as encapsulation and WAN IP
address. Get this information from your ISP.
P-792H v2 User's Guide
for technical background information on WAN.
Chapter 6 WAN Setup
61