[3211] in North American Network Operators' Group

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Re: tilting at windmills discussion 2

daemon@ATHENA.MIT.EDU (Dorian Kim)
Wed Jun 19 18:05:56 1996

Date: Wed, 19 Jun 1996 18:01:14 -0400 (EDT)
From: Dorian Kim <dorian@cic.net>
To: Vadim Antonov <avg@postman.ncube.com>
cc: scharf@vix.com, nanog@merit.edu
In-Reply-To: <9606192151.AA04600@butler.ncube.com>

On Wed, 19 Jun 1996, Vadim Antonov wrote:

> >   512  544  576 1024 1536 2048 2560 3072 3584 4096 4608
> >  .004 .002 .189 .000 .069 .053 .000 .000 .000 .000 .000
> >
> >Collected at a private interconnect between CICNet, OARnet and OSU. over a
> >period of a week or so.
>
> This is not surprising if you think of it.  Short packets are
> pure ACKs, telnet keystrokes and SYNs.  What is worrying is the
> peak at 576.  It means TCP unable to grasp that path MTU is
> really 1.5K.

Agreed. There's alot of bad/old implementations out there, and that's
something that should cause some worry..

-dorian


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