Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!wuarchive!zaphod.mps.ohio-state.edu!ub!canisius!pavlov
From: pavlov@canisius.UUCP (Greg Pavlov)
Newsgroups: comp.unix.ultrix
Subject: Re: TCP chokes between Ultrix 4 and 3.1c systems
Message-ID: <2927@canisius.UUCP>
Date: 11 Oct 90 02:53:21 GMT
References: <1990Oct9.031736.2569@hayes.fai.alaska.edu> <1990Oct9.040440.23066@watcgl.waterloo.edu>
Organization: Canisius College, Buffalo N.Y. 14208
Lines: 21

In article <1990Oct9.040440.23066@watcgl.waterloo.edu>, idallen@watcgl.waterloo.edu (Ian! D. Allen [CGL]) writes:
> > ....  When I use ftp, telnet, or even mail to a DS3100 running Ultrix 3.1c
> >from my DS5000 running Ultrix 4.0, the connection hangs whenever 512 or more
> >bytes are sent from a single operation (e.g., mail messages, ftp files,...
> 
> Aha!  We see this behaviour between real MIPS machines and our Ultrix
> 3.1C DECsystem 5400's.  BSD Vaxen, Suns, other machines, have no
> problem talking to the 5400's, but connecitons from those three MIPS
> machines hang on large packets. ...

  We have 4.0 on all of our DEC 3100's, 3.n on our 5810 and 5400, 2.n on a uVAX
  II, and we also have a MIPS M/120.  We run telnet, rlogin, tar, and NFS bet-
  ween all of them with no problems.

  We did have a problem that sounds suspiciously like your's when we first
  received the M/120  (...anyone wanna to buy it ?  It's a very nice machine..).
  Removing the "trailers" option on packets eliminated it...


    greg pavlov, fstrf, amherst, ny
    pavlov@stewart.fstrf.org