Cisco CCNP / BCMSN Exam Tutorial: Multicasting And Reserved Addresses
Ever since you picked up your first CCNA book, you’ve heard about multicasting, gotten a fair idea of what it is, and you’ve memorized a couple of reserved multicasting addresses. Now as you prepare to pass the BCMSN exam and become a CCNP, you’ve got to take that knowledge to the next level and gain a true understanding of multicasting. Those of you with an eye on the CCIE will truly have to become multicasting experts!
Having said that, we’re going to briefly review the basics of multicasting first, and then future tutorials will look at the different ways in which multicasting can be configured on Cisco routers and switches.
What Is Multicasting?
A unicast is data that is sent from one host to another, while a broadcast is data sent from a host that is destined for “all” host addresses. By “all”, we can mean all hosts on a subnet, or truly all hosts on a network.
There’s a quite a bit of a middle ground there! A multicast is that middle ground, as a multicast is data that is sent to a logical group of hosts,...
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