packet switching definition communications
A communications paradigm in which packets
(messages or fragments of messages) are individually routed
, with no previously established communication path. Packets are routed to their destination through the most expedient route (as determined by some routing algorithm
). Not all packets travelling between the same two hosts, even those from a single message, will necessarily follow the same route.
The destination computer reassembles the packets into their appropriate sequence. Packet switching is used to optimise the use of the bandwidth
available in a network and to minimise the latency
is an international standard packet switching network.
Also called connectionless. Opposite of circuit switched
. See also virtual circuit
, wormhole routing