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TCP/IP versus OSI Abstract: This report focuses on how the OSI (Open System Interconnection) and TCP/IP (Transmission Control Protocol/Internet Protocol) compare and contrast. Beginning with the short history of evolving of both protocols, we will then define the similar stack architecture of both protocols, and then discuss the differences and similarities in their corresponding layers. Background History: In the late sixties the ARPA (Advanced Research Projects Agency) started to develop an experimental network, working on the principle of packet switching messaging. The aim of the project was to develop a reliable and manufacturer-independent data communications network, later called ARPANET. Its success lead to conversion of ARPANET from experimental to an operational network in 1975. By 1983 the TCP/IP protocols were adopted as Military Standards, and at about the same time the term Internet came into common usage. In the mid-1980s, the ISO (International Standards Organisation) developed OSI (Open Systems Interconnection) reference model. This networking suite...

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