Chapter 16: Multicast; Multicast Forwarding - Cisco 300 Series Administration Manual

Managed switch

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Table of Contents

Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)

This section describes the Multicast Forwarding feature, and covers the following

Multicast Forwarding

Defining Multicast Properties

Adding MAC Group Address

Adding IP Multicast Group Addresses

Configuring IGMP Snooping

MLD Snooping

Querying IGMP/MLD IP Multicast Group

Defining Multicast Router Ports

Defining Forward All Multicast

Defining Unregistered Multicast Settings

Multicast forwarding enables one-to-many information dissemination. Multicast

applications are useful for dissemination of information to multiple clients, where

clients do not require reception of the entire content. A typical application is a

cable-TV-like service, where clients can join a channel in the middle of a

transmission, and leave before it ends.

The data is sent only to relevant ports. Forwarding the data only to the relevant

ports conserves bandwidth and host resources on links.