"Multicast" is sometimes also used to refer to a
multiplexed broadcast, although that is a very different thing and should not be confused.Multicast is the delivery of
information to a group of destinations simultaneously using the most efficient strategy to deliver the messages over each link of the
network only once, creating copies only when the links to the destinations split. The word "Multicast" is typically used to refer to
IP Multicast, the implementation of the multicast concept on the IP routing level, where
routers create optimal distribution paths for datagrams sent to a multicast destination address
spanning tree in realtime. But there are also other implementations of the multicast distribution strategy listed below.
See more at Wikipedia.org...
1. In a
network, a technique that allows
data, including
packet form, to be simultaneously transmitted to a selected
set of destinations. Note: Some networks, such as
Ethernet, support multicast by allowing a
network interface to belong to one or more multicast groups. 2. To transmit identical data simultaneously to a selected set of destinations in a network, usually without obtaining
acknowledgement of receipt of the
transmission.
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