Alternating bit protocol: Difference between revisions

Revision as of 14:00, 12 February 2020

Revision as of 01:03, 12 March 2020

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'''Alternating bit protocol''' ('''ABP''') is a simple [[network protocol]] operating at the [[data link layer]] ([[OSI model|OSI]] layer 2) that retransmits lost or corrupted messages using FIFO semantics. It can be seen as a special case of a [[sliding window protocol]] where a simple timer restricts the order of messages to ensure receivers send messages in turn while using a window of 1 bit.<ref>{{cite book|last=Tel|first=Gerard|title=Introduction to distributed algorithms|year=2000|publisher=Cambridge|isbn=0521794838|pages=85}}</ref>

It was used by the [[ARPANET]] and the [[Packet switching#EIN|European Informatics Network]].<ref>{{Cite book|last=Davies|first=Donald Watts|url=httphttps://archive.org/details/computernetworks00davi|url-access=registration|title=Computer networks and their protocols|date=1979|publisher=Chichester, [Eng.] ; New York : Wiley|others=Internet Archive|year=|isbn=|___location=|pages=[https://archive.org/details/computernetworks00davi/page/206 206]}}</ref>

== Design ==