Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcdc!hpldola!ppa
From: ppa@hpldola.HP.COM (Paul P. Austgen)
Newsgroups: comp.sys.ibm.pc
Subject: Re: tcp-ip what is it?
Message-ID: <11250061@hpldola.HP.COM>
Date: 21 Feb 89 21:27:38 GMT
References: <14729@cup.portal.com>
Organization: HP Elec. Design Div. -ColoSpgs
Lines: 8

These abbreviations refer to levels 3 and 4, approximately, of
the ISO model for OSI (Open Systems Interface).  These particular
ones are actually earlier, and part of the ARPA defense network.
TCP is Transmission Control Protocol which controls end-to-end
integrity of the transmission.  IP is the Internet Protocol,
which understands routing and integrity of the network
connection.  There are numerous references and whole books
devoted to this subject.