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From: tsuchiya@GATEWAY.MITRE.ORG (Paul Tsuchiya)
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  ISO8473 vs. IP
Message-ID: <8709081306.AA11132@gateway.mitre.org>
Date: Tue, 8-Sep-87 09:06:22 EDT
Article-I.D.: gateway.8709081306.AA11132
Posted: Tue Sep  8 09:06:22 1987
Date-Received: Wed, 9-Sep-87 03:47:25 EDT
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Organization: The ARPA Internet
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The simple reply is that they are very similar functionally, but
different in terms of header format and all that.

I would be hard pressed to say what the important differences were
since that depends on ones priorities.  However, the ISO8473 address
is much bigger (up to 20 bytes vs. 4 for DoD IP).  I like the
partial source routing of ISO8473 because I am involved in routing.
However, that feature can bite you if you are not careful, and I
wouldn't be surprized if it never gets widely implemented.

If one consideres ICMP to part and parcel of DoD IP, then there are
a couple more differences.  ICMP has the Echo function, which ISO8473 does
not, and has the Redirect.  However, ISO9542 (the ES-IS routing protocol
for use with ISO8473) has the redirect function, so its tit for tat.

I will be interested to see what others perceive as the major
differences between the two.  I have never sat down and made a
blow by blow comparison.


	Paul Tsuchiya		tsuchiya@gateway.mitre.org
	The MITRE Corp.		tsuchiya@mitre-gateway.arpa