[2157] in linux-net channel archive
Very very bizzare networking problems. :)
daemon@ATHENA.MIT.EDU (Christopher Blizzard)
Tue Mar 19 21:04:01 1996
To: alan@cymru.net
cc: linux-net@vger.rutgers.edu
Date: Tue, 19 Mar 1996 20:56:03 -0500
From: Christopher Blizzard <blizzard@odin.nyser.net>
Howdy. I have been experiencing a very odd network related
problem and was hoping you might have the time to help. I'm also going to
cc: this to the linux-net mailing list in hopes that someone might have
something to offer there as well. :) Here is the description:
I originally ran 1.2.13 when I first set up this Linux box.
Unfortunately, I found that if I didn't generate network traffic every so
often, say every 15 minutes or so, that I would no longer be able to
access the machine remotely (An ARP problem of some kind?). Any service
that I tried to use be it web services, ftp, telnet, or sendmail would
respond with "Connection refused." If I went to the console and telnetted
out I could then telnet back in without problems. There were a couple of
times when I pinged the machine from offsite and it would return two echos
instead of one.
I figured that there might be something wrong with the kernel, so
I thought I'd upgrade. I tried running 1.3.57, a damn stable kernel, and
see if it would help. It did seem to. I can now telnet in without
problems as long as I am not on the same physical cable as the machine.
If I am the same segment, I still receive the same messages as above.
However, if I try again and again (especially from one of the suns on the
segment) to connect to port 80 I will eventually get a connection. At
that point I can connect without problems from any machine on that
segment to that service.
A co-worker of mine also runs Linux. He does not seem to
experience the problems that I do. We run on the exact same hardware.
The only difference that I can figure is that he has 10Base-T, and I use
the AUI port with an adapter to Coax on my ether card. We both have
3Com 3C579's. I've tried booting using his kernels off of disk and I
have exactly the same problems. Any thoughts on how I might diagnose
this further? Thanks.
--Chris
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Christopher Blizzard | "The truth knocks on the door and you say
blizzard@odin.nyser.net | 'Go away. I'm looking for the truth,' and
| so it goes away." --Robert Pirsig
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