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Date:      Thu, 09 Aug 2001 21:10:34 -0400
From:      Justin Sheehy <justin@iago.org>
To:        freebsd-stable@freebsd.org, freebsd-questions@freebsd.org
Subject:   fxp SCB timeout problems, anyone have a solution?
Message-ID:  <x7u1zgg1o5.fsf@ra.iago.org>

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I am having a major problem with a FreeBSD-4.3 machine.  I dredged
through the mailing list archives, and did not find any useful
answers.  I am hopeful that someone here can help.

The machine is currently running 4.3-RELEASE from a CD install.  After
installing it, I shipped it away to a datacenter which is its intended
long-term home.

When the machine came up, I logged in and immediately began a cvsup in
preparation for bringing the machine up to the head of STABLE.  Within
a minute or two, the machine was totally unreachable and unresponsive
on the network.  A reboot brings the machine back online, but it falls
off the net again reliably within about 10 minutes.  It stays up a bit
longer if the network is not being used heavily.

The motherboard is an Intel 815SET Easton with onboard NIC.  The
relevant kernel messages at boot time are:

Jul 31 17:08:17 phl /kernel: FreeBSD 4.3-RELEASE #0: Sat Apr 21 10:54:49 GMT 2001
Jul 31 17:08:17 phl /kernel: jkh@narf.osd.bsdi.com:/usr/src/sys/compile/GENERIC
Jul 31 17:08:17 phl /kernel: Timecounter "i8254"  frequency 1193182 Hz
Jul 31 17:08:17 phl /kernel: CPU: Pentium III/Pentium III Xeon/Celeron (797.42-MHz 686-class CPU)
Jul 31 17:08:17 phl /kernel: Origin = "GenuineIntel"  Id = 0x68a  Stepping = 10
Jul 31 17:08:17 phl /kernel: Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
...
Jul 31 17:08:18 phl /kernel: fxp0: <Intel PLC 10/100 Ethernet> port 0xdf00-0xdf3f mem 0xff8ff000-0xff8fffff irq 11 at device 8.0 on pci1
Jul 31 17:08:18 phl /kernel: fxp0: Ethernet address 00:03:47:a0:49:91

Whenever the machine is falling off-net, the only thing logged looks
like this:

Aug  9 16:27:02 phl /kernel: fxp0: SCB timeout
Aug  9 16:27:02 phl last message repeated 17 times
Aug  9 16:27:02 phl /kernel: fxp0: device timeout

And then the machine remains off the net until rebooted.

Is there any known fix for this?  All of the messages that I see on
the mailing list archives that have "solutions" involve switching out
the hardware for a different NIC.  As that would involve having the
machine shipped back home and then out again, this is very
undesirable.  I can usually keep the machine on the net for at least a
few minutes at a time before it hangs, so if anyone has any idea how I
could possibly fix this remotely I would be greatly appreciative.

If there is no way to fix this remotely, that knowledge would also be
useful as I will then move ahead with the RMA of the machine.

In any case, thank you all in advance for any assistance.

Regards,

-Justin

 



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