Supermicro Bladeserver

TAKAHASHI Yoshihiro nyan at
Sat Jan 8 03:40:24 UTC 2011

In article <AANLkTinkCvJy19NxWoN_hfNgae9ETEBtpG=szFf2WZT2 at>
Jack Vogel <jfvogel at> writes:

> I am trying to track down a problem being experienced at using
> SuperMicro
> bladeservers, the SERDES 82575 interfaces are having connectivity or perhaps
> autoneg problems, resulting in link transitions and watchdog resets.
> The closest hardware my org at Intel has is a Fujitsu server who's blades
> also have
> this device, but testing on that has failed to repro the problem.
> I was wondering if anyone else out there has this hardware, if so could you
> let me
> know your experience, have you had problems or not, etc etc?

My machine has the following em(4) device and it has a autoneg
problem.  When I was using 8-stable kernel at 2010/11/01, it has no
problem.  But I update to 8-stable at 2010/12/01, the kernel is only
linked up as 10M.

em0 at pci0:0:25:0:    class=0x020000 card=0x13d510cf chip=0x104a8086 rev=0x02 hdr=0x00
     vendor     = 'Intel Corporation'
     device     = '82566DM Gigabit Network Connection'
     class      = network
     subclass   = ethernet

TAKAHASHI Yoshihiro <nyan at>

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