Problems with em interfaces on FreeBSD 6.1

[Daniel Ryslink]

Hello,

Thank you very much for your assistance.

I am happy to report that we have been able to fix this problem. I just 
wanted to wait a day or two to be sure that it won't resurface again.

The last steps we did were:

1) Upgrade SuperMicro SS5015M-T BIOS from version 1.1 to version 1.1a
2) Inclusion of 'debug.mpsafenet=0' into /boot/loader.conf suggested in 
this mailing list.

I would guess that the step 2 was what really solved the problem.

Best Regards
Daniel Ryslink

On Thu, 17 Aug 2006, Pyun YongHyeon wrote:

> On Fri, Aug 11, 2006 at 10:06:00AM +0200, Daniel Ryslink wrote:
> >
> > Hello,
> >
> > We have currently upgraded one of our routers to Gigabit connectivity and
> > FreeBSD 6.1 Release.
> >
> > The hardware is Supermicro SuperServer 5015M-T  - we have tried both the
> > integrated NIC and yet another external Intel NIC - specifically
> >
> > Intel PRO/1000 MT Dual Port Server Adapter
> > PWLA8492MT
> >
> > The problem is that several times a day, the following appears in
> > messages:
> >
> > Aug 11 08:41:44 b2 kernel: em0: watchdog timeout -- resetting
> >
> > accompanied with a loss of connectivity lasting for several seconds.
> >
> > We have tried using both the default driver that came with the FreeBSD
> > installation as well as the newest driver from Intel dated 2th April 2006
> > compiled as a module, but the problem still persists.
> >
> > If anyone encountered the problem and has a solution, I would be very
> > grateful.
> >
>
> Because I can't reproduce it here and I failed to find a possible
> cause of the issue.
> As a last resort would you give attached patch a try?
> The patch was generated against latest stable.
>
> -- 
> Regards,
> Pyun YongHyeon
>