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From: JBVB@AI.AI.MIT.EDU ("James B. VanBokkelen")
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Ethernet Bridge
Message-ID: <278267.871101.JBVB@AI.AI.MIT.EDU>
Date: Sun, 1-Nov-87 12:38:21 EST
Article-I.D.: AI.278267.871101.JBVB
Posted: Sun Nov  1 12:38:21 1987
Date-Received: Thu, 5-Nov-87 21:25:37 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 12

If you mean Bridge Communications' IP routing products, there is at least
one flavor and vintage of them out there which fragments all IP packets
longer than 540 bytes.  4bsd and relatives send TCP segments of 512 (552
bytes IP length) bytes by default, and TFTP packets are just large enough
to get caught, too.

I don't know about the big-machine people, but it has a fairly horrendous
effect on the older PC Ethernet cards, which aren't nearly fast enough to
catch both fragments reliably.  It is even worse when attempting to use one
of the public domain software packages that doesn't support IP reassembly.

jbvb