[355] in linux-net channel archive
Problems with Linux talking to Tektronix machines
daemon@ATHENA.MIT.EDU (Matthew Geier)
Sat May 20 04:24:59 1995
From: Matthew Geier <matthew@sleeper.apana.org.au>
To: linux-net@vger.rutgers.edu
Date: Sat, 20 May 1995 17:50:25 +1000 (SYD)
I have a 'vintage' Tektronix XD88/10 workstation. I use this
as my main machine, and use Linux as a router and a platform
to experiment on.
For some time, ( up to 1.2.8 at least ) I have had this problem
were is I hit ^C (kill ), The Tek stops recieveing from the Linux
machine.
I have a transciever on the Tek with Tx/Rx lights, and I gather
from watching these lights that after I hit ^C, Linux sends some
sort of packet that confuses the Tek, and the Tek stops listing
to it.
I can cleanly logout of the linux machine, so its still listening
to me !.
Ive noticed with 1.2.8 at least, I can hit ^C and survive if I do
it to my fast local PC, but my slower routing PC, it hangs as above.
Any 'remote' machine, I lose if I hit ^C
Id just ignore this as just an other annoying bug with my Tek machine
(it cant talk to Solaris machines either - similar loss of connection
but a different trigger ), but my work have Tektronix Xterminals (XP300's
I think ), and ive noticed that the local telnet client in the current
Tektronix Xterminal code exhibits the SAME behavour as my aging Tek
workstation !.
What ever Linux sends to my Tektronix workstation that confuses the
session, also affects the current generation Tek Xterminals !.
Any one have any idea's ?. Im not well enough versed in IP to start
looking around for possible causes.
Im told the problem I have with Solaris machines is based on Solaris
finding it perfectly appropiate to send 0 lenght packets with control
bits set, which is legal, but my old Tek IP code throws away 0 lenght
packets before looking for valid control bits.. Linux might be doing
this for different reasons ?
--
Matthew Geier, | Desolation Road Railfan BBS and Dialup Unix
matthew@sleeper.apana.org.au | (+61) 2 588 4615
matthew@cs.usyd.edu.au | An APANA Sydney hub.
