Multicasting Additional Notes that You have to Read

To understand what we are going to talk about, you must be familiar with how MAC addresses are structured and how they work. The MAC Addresses page is available to help you learn more about them..

A multicast is similar to a broadcast in the sense that its target is a number of machines on a network, but not all. Where a broadcast is directed to all hosts on the network, a multicast is directed to a group of hosts. The hosts can choose whether they wish to participate in the multicast group (often done with the Internet Group Management Protocol), whereas in a broadcast, all hosts are part of the broadcast group whether they like it or not :).

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