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Date:      Wed, 18 Dec 2002 14:51:32 -0800 (PST)
From:      Julian Elischer <julian@elischer.org>
To:        Steve Baxter <steve@pipenetworks.com>
Cc:        freebsd-net@freebsd.org
Subject:   Re: unexplained reboot of freebsd, looking for ways to debug.
Message-ID:  <Pine.BSF.4.21.0212181450170.32148-100000@InterJet.elischer.org>
In-Reply-To: <Pine.LNX.4.33.0212190834040.17505-100000@internal.pipenetworks.com>

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On Thu, 19 Dec 2002, Steve Baxter wrote:

> 
> Hello,
> 
> I have posted this hear as I think I have a networking related freebsd
> rebooting issue :)
> 
> I am running a couple of FreeBSD boxes both 4.5-RELEASE FreeBSD. I am
> using to bridge Ethernet over IP using both vtun and netgraph. I am using
> the netgraph script in /usr/share/examples/netgraph/ether.bridge to enable
> bridging as native bridging in this cut of code did not seem to work.
> 
> Anyhow, to cut a long sotry short, both of my bridges were working very
> very well, I had tested them up to about 90Mb/sec over a public IP network
> and the ethernet cards generally lost frames at arounf 5000 frames/sec
> mark (about 1 frame in 8000) before the boxes ran into any issues. In the
> last week though I have been doing moderate amounts of load on these bpxes
> and they have been rebooting as random intervals - somtimes within
> minutes of each other. Before this they were working perfectly for 4
> months !
> 
> What I am after is a way to turn on some form of debugging in order to
> find out what is causing this problem. There are no messages left in any
> of the var/log files that are of any help. Is there some form of crash
> logging or something I can switch on so when the next time it happens I
> can do some sort of analysis on the problem.
> 
> 
> 
> PS. I am appreciate I am running RELEASE but it has worked for so long and
> if anybody can give me a set of steps to upgrade these boxes to a later
> rev that can be performed over an ssh session I would be very grateful :-)
> 

do you have ddb in the kernel?
do you have a serial console to capture error messages?



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