Multicast enables efficient delivery of messages from a source to a set of receivers. The efficiency is achieved by the source injecting a single copy of the message to the network, and the network, only when necessary, making copies and forwarding them towards the receivers.
There are two significant benefits of using multicast. The first and obvious benefit is the resource efficiency gained, while the second benefit is the fair distribution of the message created because multicast delivery minimizes the delay and makes reception more equitable.
This white paper outlines protocols and methods used for multicast, it identifies the challenges of running multicast applications, and it details how to monitor and manage network-wide multicast configurations.
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