'''Van Jacobson TCP/IP Header Compression''',createdis by scientista [[Vandata Jacobsoncompression]] andprotocol described in [http://www.ietf.org/rfc/rfc1144.txt '''RFC 1144]''', is a [[data compression]] protocol specifically designed 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. 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).
