What is end-host multicast (EM)?
The variant of multicast Jungle Monkey uses is end-host multicast (as opposed to IP Multicast or IPv6 Multicast – see below). End-host multicast organizes a bunch of computers together in a tree so that they can share data efficiently. An end-host multicast tree is similar to telephone tree. A telephone tree is a tree of people with phone numbers used to distribute information. For example, I might be organizing a party and distribute a telephone tree to my friends (see figure below) so I can keep them up-to-date with party plans. The telephone tree may say if David calls Alice and Bob, Alice should call Carl and Dana and Bob should call Elijah and Fred, then Carl should call Gary and Hilda, and so on. Each person is responsible for calling two people. Ultimately, everyone who is in the telephone tree will receive the information and everyone had to call at most 2 people. End-host multicast is not like a telephone tree in that the tree is self-organizing. The means that when you join t
