Chapter 3. IP Multicast at Layer 3
As discussed in Chapter 1, many unique applications leverage multicast for efficient packet delivery. In most cases, these applications use the network merely as transport for application data. Multicast senders and receivers are typically IP host machines that run these applications.
Because of the abstraction of the logical layer from the physical in the OSI model, almost any computing device can be a multicast host. Potential multicast hosts include set-top cable boxes, smartphones, tablets, laptops, personal computers, servers, routers, and so on. With this kind of ubiquity, an engineer might assume that a fully converged IP unicast network is simply multicast ready and that hosts may begin participation ...
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