Van Jacobson TCP/IP Header Compression: Difference between revisions

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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. 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 TCP/IP Header Compression''' is a [[data compression]] protocol described in '''[[Request for Comments|RFC]] 1144''',{{ref RFC|1144}} specifically designed by [[Van Jacobson]] to improve [[Internet protocol suite|TCP/IP]] performance over slow [[serial linkslink]]s. Van Jacobson compression reduces the normal 40 [[byte]] TCP/IP [[packet headersheader]]s down to 3-43–4 bytes for the average case.; Itit 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[[dial-up modemsmodem]]s.

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 [[Serial Line Internet Protocol]] (SLIP) with VJ compression are often called [[CSLIP]] (Compressed SLIP).

==External links==

* RFC{{IETF RFC|1144}}

* [ftp://ftp.rfc-editor.org/in-notes/rfc1144.pdf RFC 1144] in an easier-to-read [[PDF]] format

==References==

{{reflist}}

{{DEFAULTSORT:Van Jacobson TCP IP Header Compression}}

[[Category:Data compression]]

[[Category:TCP/IP extensions]]

{{network-stub}}