MULTICASTING

MULTICASTING

ABSTRACT:

Multicasting is fundamental communication paradigm for supporting one to many communication. A better way to transmit data from one source to many destination is to provide a multicast transport service . With a multicast transport service one node can send data to may desinations by making just a single call on the transport service.
Thus for those applications which involves a single node sending to many recipients, a multicast facility is clearly a more natural programming paradigm than unicast (point to point).
Many underlying transmission media provide support for multicast and broadcast at hardware and media access level . When a multicast service is implemented over such a network, there is a huge improvement in performance. If a hardware supports multicast, a packet which is destined for N recipients can be sent as just a single packet !
IP MULTICAST PROTOCOL (RFC 1112) was adapted by Internet Engineering Task Force (IETF) in march 1992 as a standard protocol for building multicast applications on the internet.


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