IP Multicast Fundamentals

Multicast is a technology that saves bandwidth in the network by sending a single traffic source stream to only those hosts interested in receiving the traffic. With multicast, we can deliver a higher quality user experience by not overloading the source server and by conserving bandwidth. Any time there are many receivers, but only a small number of sources, multicast can be used very effectively. Some of the current applications that take advantage of multicast are streaming audio, streaming video, video conferencing, whiteboard software, software updates, collaborative software, and real-time financial data delivery.

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