Editing Connectionless communication (section)

{{Short description|Network protocol with routing per packet}}
{{refimprove|date=February 2018}}

'''Connectionless communication''', often referred to as '''CL-mode''' communication,<ref name=":6">Information Processing Systems - Open Systems Interconnection, "Transport Service Definition - Addendum 1: Connectionless-mode Transmission", International Organization for Standardization, International Standard 8072/AD 6, December 1986.</ref> is a data [[transmission (telecommunications)|transmission]] method used in [[packet switching]] networks, using data packets that are frequently called [[datagram]]s, in which each data packet is individually addressed and routed based on information carried in each packet, rather than in the setup information of a prearranged, fixed data channel as in [[connection-oriented communication]]. Connectionless protocols are usually described as [[stateless protocol]]s, the [[Internet Protocol]] (IP) and [[User Datagram Protocol]] (UDP) are examples.