Editing Network congestion (section)

====TCP window shaping====
{{See also|TCP window scale option}}

Congestion avoidance can be achieved efficiently by reducing traffic. When an application requests a large file, graphic or web page, it usually advertises a ''window'' of between 32K and 64K. This results in the server sending a full window of data (assuming the file is larger than the window). When many applications simultaneously request downloads, this data can create a congestion point at an upstream provider. By reducing the window advertisement, the remote servers send less data, thus reducing the congestion.<ref>{{citation |url=http://nrlweb.cs.ucla.edu/nrlweb/publication/download/162/2002-ett-0.pdf |title=Generalized Window Advertising for TCP CongestionControl |access-date=2020-11-13}}</ref><ref>{{citation |chapter=Advertised Window-Based TCP Flow Control in Routers |doi=10.1007/978-0-387-35522-1_12|title=Telecommunication Network Intelligence|year=2000|last1=Pop|first1=O.|last2=Moldován|first2=I.|last3=Simon|first3=Cs.|last4=Bíró|first4=J.|last5=Koike|first5=A.|last6=Ishii|first6=H.|pages=197–218|isbn=978-1-4757-6693-6|doi-access=free}}</ref>