Igmp; Chapter 38 Igmp; Igmp Overview - ZyXEL Communications XGS-4526 User Manual

C
H A P T E R
This chapter shows you how to configure the Switch as a multicast router. See also
Section 24.4 on page 232

38.1 IGMP Overview

IP multicast is an IETF standard for distributing data to multiple recipients. The
following figure shows a multicast session and the relationship between a
multicast server, multicast routers and multicast hosts. A multicast server
transmits multicast packets and multicast routers forward multicast packets to
multicast hosts.
Figure 168 IP Multicast
Server
A host can decide to join or leave a multicast group at any time. A host can also be
a member of more than one multicast group. Multicast groups are identified by IP
addresses in the Class D range (224.0.0.0 to 239.255.255.255). A multicast
server sends packets addressed to a particular multicast group (multicast IP
address).
XGS-4526/4528F/4728F User's Guide
for information on IGMP snooping.
Multicast Routers
38

IGMP

Hosts
345