<communications, protocol> The type of communication method in which data is sent between hosts without first establishing an end-to-end path. The use of connectionless protocols is also called packet switching because each packet may be routed via a different path. Packets of a multi-packet message may arrive out of order, requiring the sender to reassemble the original message using a sequence number stored in the header of each packet.
UDP is a connectionless protocol used on the Internet.
Connectionless protocols contrast with circuit switching or connection-oriented communications where a complete path between the hosts is established before data is transferred, as in an analogue telephone system.
Connectionless protocols are useful when low-overhead is more important than reliability.
Last updated: 2014-02-19
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Nearby terms: connected graph « connected subgraph « Connection Definition Language « connectionless protocol » Connection Machine LISP » connection-oriented » connection-oriented network service