Principles of the multicast feature

The multicast technology effectively resolves the problem of point-to-multipoint (P2MP) transmission and implements efficient P2MP data transmission on IP networks. The basic concepts of multicast are as follows:

Multicast group: an agreement between the sender and receiver. For example, a TV channel can be regarded as a multicast group.

TV station: a multicast source, which sends data to a certain TV channel.

Set-top box (STB): an Rx host. When a user chooses to watch the program of a channel, this action can be regarded as enabling the host to join a multicast group. Then, the STB displays the program of the TV channel to the user, which means that the host has received the data sent to this multicast group.

Users can turn on or turn off their STBs or switch between channels any time, which means that hosts can join or leave a multicast group dynamically.

For more information, visit Huawei technical support website.

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