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Path: utzoo!watmath!clyde!cbosgd!ihnp4!qantel!hplabs!hpda!fortune!wdl1!jbn
From: jbn@wdl1.UUCP
Newsgroups: net.dcom
Subject: Re: Re: Re: Standards for commercial pac
Message-ID: <686@wdl1.UUCP>
Date: Wed, 4-Sep-85 21:22:18 EDT
Article-I.D.: wdl1.686
Posted: Wed Sep  4 21:22:18 1985
Date-Received: Mon, 9-Sep-85 02:12:33 EDT
Sender: notes@wdl1.UUCP
Organization: Ford Aerospace, Western Development Laboratories
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Nf-ID: #R:hou2h:-103500:wdl1:11700023:000:707
Nf-From: wdl1!jbn    Sep  4 13:22:00 1985


     Karn's comments are good.  There are ways to abuse virtual circuit
networks too.  But they tend not to happen by accident, and existing calls
are usually not interfered with when the call-setup process is bottlenecked.
You can build virtual circuit systems which provide an assured level of
service if you can get any service (i.e. can place a call) and we don't 
know how to do this for datagrams yet.
     I'm writing a paper on queueing in datagram networks which will have
a new solution to part of the congestion problem, one good enough to keep
things going in the presence of obnoxious hosts.  When I get it done, I 
will post it here, as well as submitting it for publication.

					John Nagle