Date: Mon, 2 Sep 2002 17:05:27 +0200 From: "Patrick O'Reilly" <bsd@perimeter.co.za> To: "FreeBSD Question List" <freebsd-questions@freebsd.org> Subject: Network Communications stopped for no apparent reason?!? Message-ID: <011301c25292$2e528ce0$b50d030a@PATRICK>
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Hi all.
I have experienced something very strange today. A server running 4.6.2
just stopped talking to the network. I cannot find any clues as to why!
I drove over to the Collocation site, expecting to find it was down with
some hardware problem, but was surprised to find that it was actually
still running. After bouncing it it came up OK.
An mrtg probe that should have run at 12:10 was unable to connect, which
indicates that the network died sometime between 12:05 and 12:10.
The only clues I can find are the following entries from
/var/log/messages:
---
Sep 2 12:08:25 obelix /kernel: dc0: TX underrun -- increasing TX
threshold
Sep 2 12:08:26 obelix /kernel: dc0: TX underrun -- increasing TX
threshold
Sep 2 12:08:26 obelix /kernel: dc0: TX underrun -- using store and
forward mode
---
The /var/run/maillog shows continued email messages delivered from the
system (eg: warning about the failure of mrtg probes) to local accounts,
but no incoming messages from the outside.
Any ideas on where else I could look for more info?
Regards,
Patrick O'Reilly.
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