Van Jacobson TCP/IP Header Compression: Difference between revisions

Revision as of 23:23, 11 May 2007

Revision as of 06:33, 18 February 2008

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'''Van Jacobson TCP/IP Header Compression''' is a [[data compression]] protocol described in '''RFC 1144''', specifically designed by [[Van Jacobson]] to improve [[Internet protocol suite|TCP/IP]] performance over slow serial links developed by [[Van Jacobson]]. Van Jacobson compression reduces the normal 40 [[byte]] TCP/IP packet headers down to 3-4 bytes for the average case. It does this by saving the state of TCP connections at both ends of a link, and only sending the differences in the header fields that change. This makes a very big difference for interactive performance on low speed links, although it will not do anything about the processing delay inherent to most dialup modems.

Van Jacobson Header Compression (also VJ compression, or just Header Compression) is an option in most versions of [[Point-to-Point Protocol|PPP]]. Versions of [[SLIP]] with VJ compression are often called CSLIP (Compressed SLIP).