Reliability (computer networking): Difference between revisions

Revision as of 19:01, 30 October 2020

Revision as of 02:53, 3 December 2020

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==History==

Building on the [[packet switching]] concepts proposed by [[Donald Davies]], the first [[communication protocol]] on the [[ARPANET]] was a reliable packet delivery procedure to connect its hosts via the [[BBN Report 1822|1822 interface]].<ref name="J. Gillies, R. Cailliau">{{cite book|last1=Gillies|first1=J.|url=https://books.google.com/books?id=pIH-JijUNS0C&lpg=PA25&pg=PA25|title=How the Web was Born: The Story of the World Wide Web|last2=Cailliau|first2=R.|date=2000|publisher=[[Oxford University Press]]|isbn=0192862073|pages=23–25}}</ref><ref name=":2">{{cite journal|last1=Roberts|first1=Dr. Lawrence G.|date=November 1978|title=The Evolution of Packet Switching|url=http://www.ismlab.usf.edu/dcom/Ch10_Roberts_EvolutionPacketSwitching_IEEE_1978.pdf|journal=IEEE Invited Paper|volume=|pages=|accessdate=September 10, 2017|quote=In nearly all respects, Davies’ original proposal, developed in late 1965, was similar to the actual networks being built today.|via=}}</ref> A host computer simply arranged the data in the correct packet format, inserted the address of the destination host computer, and sent the message across the interface to its connected [[Interface Message Processor]] (IMP). Once the message was delivered to the destination host, an acknowledgment was delivered to the sending host. If the network could not deliver the message, the IMP would send an error message back to the sending host.

Meanwhile, the developers of [[CYCLADES]] and of [[ALOHAnet]] demonstrated that it was possible to build an effective computer network without providing reliable packet transmission. This lesson was later embraced by the designers of [[Ethernet]].