What You Will Learn
After reading this chapter, you should be able to
Explain the Class D or multicast address space
Understand the concepts, terminology, and operation of Cisco IP multicast routing protocols (Protocol Independent Multicast[PIM] dense and sparse modes)
Comprehend the basics of configuring multicast on Cisco routers
If you want to send a greeting card, a wedding invitation, a birth announcement, or your favorite joke to all of your friends and family, you need to address and send a card for each recipient. A more convenient way would be to send one card and have the post office make a copy for each recipient. But the post office cannot do this because they use only unicast addresses—an ...