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Multicast: In multicast communication, data is sent from one source to multiple specific receivers, often to a defined group within a network. This is efficient in scenarios like live streaming, where the data is only sent once but received by multiple devices interested in the same content.
Key concepts in IP multicast include an IP multicast group address, [2] a multicast distribution tree and receiver-driven tree creation. [3] An IP multicast group address is used by sources and receivers to send and receive multicast messages. Sources use the group address as the IP destination address in their data packets.
A multicast address is a logical identifier for a group of hosts in a computer network that are available to process datagrams or frames intended to be multicast for a designated network service. Multicast addressing can be used in the link layer (layer 2 in the OSI model ), such as Ethernet multicast, and at the internet layer (layer 3 for OSI ...
Multicast is a network addressing method for 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 multiple destinations split (typically network switches and routers).
Dense mode multicast is one mode that multicast can use to construct a tree for sending packets to the multicast subscribers. It is an alternative to sparse mode. It is an alternative to sparse mode. The basic assumption behind dense mode is that the multicast packet stream has receivers at most locations.
[2] [3] [4] Regarding IP multicast, it is a technique for one-to-many communication over an IP network. IP multicast covers some part of common multicast routing protocol. IP multicast also describe IP multicast software (i.e. VideoLAN,qpimd – PIM Daemon for Quagga, GNU — PIM module for the Quagga Routing Suite, UFTP, etc.).
A message sent via multicast is sent to all nodes on the network, but only the intended nodes accept the multicast frames. [3] Multicasting is useful in situations such as video conferencing and online gaming. [1] Multicast was used originally in LANs, with Ethernet being the best example. [3]
The following architectural constructs are defined in RFC 5740 Section 2, Architecture Definition. [10]The NORM message is the fundamental NORM architectural construct. A NORM message is contained in the data field of a UDP datagram.