kevinb@maccs.dcss.mcmaster.ca (Kevin Boyes) (12/21/90)
Hello, I was reading an article in Computing Canada (Dec. 6) called "Migration to OSI requires look at alternative strategies"; in it they say ... "The top-down method is most popularly for OSI applications over TCP/IP networks since TCP/IP network services are closely related to OSI networks (TCP/IP was derived from OSI as OSI ---------------------------------- was evolving in the 70s)." ----------------------- Maybe I've been living under my rock for too long, but I did not realize this. The simularities are obvious but TCP/IP being derived from OSI and not the other way around hadn't occurred to me. Is this statement accurate? Kevin Boyes -- -- Kevin Boyes kevinb@maccs.dcss.McMaster.CA McMaster University ...!uunet!utai!utgpu!maccs!kevinb
mckenzie@bbn.com (Alex McKenzie) (12/23/90)
In article <277148E1.19535@maccs.dcss.mcmaster.ca> kevinb@maccs.dcss.mcmaster.ca (Kevin Boyes) writes: ... since TCP/IP network services are closely related to OSI networks (TCP/IP was derived from OSI as OSI ---------------------------------- was evolving in the 70s)." ----------------------- Maybe I've been living under my rock for too long, but I did not realize this. The simularities are obvious but TCP/IP being derived from OSI and not the other way around hadn't occurred to me. Is this statement accurate? ======================================================================== No, the statement is in no way accurate. TCP/IP and the movement for OSI both grew out of the work of IFIP Working Group 6.1 ("Protocols for Network Interconnection", or something similar) beginning in 1972, so they are related. TCP/IP developed from a paper written by Vint Cerf and Bob Kahn in 1974. ISO began work on OSI in 1978. In the early 1980s the US Government (National Bureau of Standards) mounted a major effort to get ANSI and ISO to adopt TCP and IP as protocols for the Transport and Network layers. The results were TP4 and CLNS. Alex McKenzie