Internet Core Protocols: The Definitive Guide

Simple Multicast Traffic

Figure 4.15 shows a simple UDP datagram sent to the multicast address 233.1.1.1. There isn’t anything else about this datagram that would indicate that it contains multicast data.

Figure 4.15. A simple UDP datagram sent to a multicast address

The application used to generate the packet shown in Figure 4.15 is a sample application called party.exe , available from Microsoft’s public FTP server. Many such applications exist for a wide variety of platforms.