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From: sch@sequent.UUCP
Newsgroups: comp.protocols.tcp-ip
Subject: Re: ICMP in ISO
Message-ID: <2549@sequent.UUCP>
Date: Thu, 16-Apr-87 00:59:23 EST
Article-I.D.: sequent.2549
Posted: Thu Apr 16 00:59:23 1987
Date-Received: Fri, 17-Apr-87 05:52:39 EST
References: <8704141658.AA01378@gateway.mitre.org> <1987.4.15.15.15.10.Rudy.Nedved@h.cs.cmu.edu>
Reply-To: sch@sequent.UUCP (Steve Hemminger)
Distribution: world
Organization: Sequent Computer Systems, Beaverton, OR
Lines: 12
Keywords: PING ICMP ISO

It seems to me that the ISO attitude is that all vendors will have
perfect hardware and software.  This is obviously not true in the real
network swamp.

Pinging hosts is a useful tool just as a hardware tech checks cable continuities
with an Ohm meter.  It is always useful to verify things are working at
the lowest level and trace the problem up through the levels.
The more protocol levels  in between the less useful the tool becomes.

- Steve Hemminger
- Network PIE
- Sequent Computer Systems