Multicast; Chapter 24 Multicast; Overview; What You Can Do - ZyXEL Communications GS2200-24 User Manual

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H A P T E R

24.1 Overview

This chapter shows you how to configure various multicast features.
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 Management Protocol) is a network-layer protocol used to
establish membership in a multicast group - it is not used to carry user data. Refer
to RFC 1112, RFC 2236 and RFC 3376 for information on IGMP versions 1, 2 and 3
respectively.

24.2 What You Can Do

• Use the Multicast Status screen
group information.
• Use the Multicast Setting screen
snooping to forward group multicast traffic only to ports that are members of
that group.
• Use the IGMP Snooping VLAN screen
how the Switch learns multicast group membership information and add VLANs
upon which the Switch is to perform IGMP snooping.

24.3 What You Need to Know

Read on for concepts on Multicasting that can help you configure the screens in
this chapter.
GS2200-24 User's Guide

Multicast

(Section 24.4 on page 195) to view multicast
(Section 24.5 on page
(Section 24.6 on page
24
196) to enable IGMP
198) to Configure
193