On Monday, July 26, 2010 7:47 AM, Ed Ravin wrote:
> [removed CC to Intel people and linux-kernel mailing list]
> 
> On Mon, Jul 26, 2010 at 11:39:20AM +0400, Andrey Panin wrote:
>> Hello all,
>> 
>> I have a problem using IPMI on Super Micro X7SBL motherboard
>> (AOC-IPMI20-E BMC). BMC shares ethernet port with onboard e1000e. It
>> works when IPMI traffic is untagged (CrcStripping=0 module option
>> used), but if I try to use 802.1Q vlan for IPMI traffic BMC stops
>> responding right after "ifup eth0". 
>> I tested 2.6.26 (debian stable kernel) and 2.6.35-rc6.
>> Looks like there is some problem with 802.1Q tags
>> stripping/inserting. 
>> 
>> There was no such problem with e1000 driver from 2.6.18.
> 
> I had something similar happen with a Supermicro X7SBA motherboard
> with 
> IPMI.  When we sent over a new kernel, we lost contact with the BMC
> shortly after networking was started.  I think it was somewhere in
> 2.6.31, which sounds consistent with your experience.  Rolling back to
> the previous kernel fixed the problem.
> 
> I opened a case with Supermicro's tech support, which didn't get very
> far.  One thing I learned was that Supermicro has an IPMI utility that
> runs in Linux, which lets you fetch data from the BMC or upgrade its
> firmware.
> 
> We've seen other weird behavior with Supermicro's IPMI implementations
> - they block ports 623 and 644, even if you don't have the BMC
> controller installed in the slot, and my favorite bug, on motherboards
> that have a dedicated Ethernet interface for IPMI, if that interface
> is not plugged into a switch at bootup, the IPMI connection
> silently moves over to one of the regular motherboard Ethernet ports,
> and stays there, across reboots, until you hard power-off the
> computer. 
> 
> 
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Andrey,

Please provide the output from lspci -vvv.

Thanks,
Bruce.

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