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From: BEAME@MCMASTER.BITNET
Newsgroups: mod.protocols.tcp-ip
Subject: re: Ultrix TCP/IP problems
Message-ID: <8610160146.AA05667@ucbvax.Berkeley.EDU>
Date: Wed, 15-Oct-86 14:00:00 EDT
Article-I.D.: ucbvax.8610160146.AA05667
Posted: Wed Oct 15 14:00:00 1986
Date-Received: Thu, 16-Oct-86 02:09:48 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
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Approved: tcp-ip@sri-nic.arpa


  HELP !  What is ethernet protocol 1001h and why is my Ultrix Vax using it to
send TELNET data?

  During a regular TELNET TCP/IP session from my PC (Window size of 512)
to the VAX (Window size of 4096) I attempt to "cat" a large file, the Vax
starts sending packets of protocol type 1001h which seems to be of the form:

dest address   source address type    data
[ 6 bytes   ]  [ 6 bytes    ] [1001h] [512 bytes data] [44 bytes ?]


  My uVAX and PC are on the same local ethernet, no gateways.

           - Carl Beame