Building Blocks I: Multicast

10/15/98


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Table of Contents

Building Blocks I: Multicast

Outline

Why Multicast?

Fundamental Questions

Layering Options

Ethernet Multicast

Propagation in a Spanning Tree

ATM Multicast

IP Multicast

Addressing

Groups and Members

IGMP at Work

Routing and Forwarding

Example: DVMRP

Moving Away From the Source

Moving Away from the Source

Avoiding Useless Forwarding

Avoiding Useless Forwarding

Overhead

Alternative Approaches

The IP Multicast Zoo

The Mbone

Reliable Delivery

Application Multicast (“Push”)

Real-time

Non-real-time

Key Points

Reference

Author: Allan Fisher