Path: utzoo!mnetor!uunet!husc6!bloom-beacon!gatech!mcnc!decvax!ucbvax!AMES-TITAN.ARPA!medin
From: medin@AMES-TITAN.ARPA (Milo S. Medin, NASA ARC Code ED)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: PSN 7 End-to-End question.
Message-ID: <8802030401.AA18957@ames-titan.arpa>
Date: 3 Feb 88 04:01:35 GMT
References: <920@thumper.bellcore.com>
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 23


Phil, I used to see throughput rates 3-4 years ago as high as 38-39 Kb/s 
moving files with FTP between a DEC-10 system running DEC System-10 (CCC) at
Lawrence Livermore National Lab to a 4.2 BSD VAX 11/750 (P mach.) at Los Alamos
National Lab via the MILNET when I was working at LLNL.  This was after the
ARPANET/MILNET split, and as I recall, there were a couple PSN's in the
path from LLNL to LANL.  This was for a large file (100K or so) in the evening.
Of course, the FTP's could have been lying to me (I didn't use a stopwatch),
but it 'felt' pretty snappy...

True, I don't see that kind of rate these days, but then there is a
lot more traffic on MILNET these days as well.  So I don't think
it's the internal PSN network that is the bottleneck.  True, both
systems were directly attached to MILNET PSN's via 1822 interfaces, and
we were running an older version of PSN software before, but I doubt
things have changed for the worse *that* much since then...  Let's make sure
the bottleneck isn't an extra hop through an EGP neighbor or some X.25
interface before throwing stones at the poor PSN's...

Ah yes, back in the good ol' days, before all the users discovered these 
networks...  I remember it well.

						Milo