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From: mckenzie@bbn.com (Alex McKenzie)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: tcp/ip and osi
Message-ID: <61732@bbn.BBN.COM>
Date: 22 Dec 90 18:05:53 GMT
References: <277148E1.19535@maccs.dcss.mcmaster.ca>
Sender: news@bbn.com
Reply-To: mckenzie@labs-n.bbn.com (Alex McKenzie)
Organization: Bolt Beranek and Newman Inc., Cambridge MA
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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