[Beowulf] Dual Xeon gigabit issues

[Joshua Baker-LePain]

I just moved two dual Xeon servers into a new home.  One of them refuses 
to see a network link, before or after the machine boots.  The only 
difference in them is a slight revision in the motherboard: the one that 
links has a Supermicro X5DPE-G2 (e7501 chipset), and the one that doesn't 
has a SM P4DPE-G2 (e7500).  Both have the same onboard network chip (Intel 
82546EB -- dual port gigabit).  They're connected to a Cisco Catalyst 
4507R.

The box *will* link when connected to a 100Mb switch.  I also hooked it 
up to a Dell 5224 (gigabit) switch that I have, and it found a link after 
about 10 seconds.

Any ideas?  I've already tried flashing the BIOS and playing with mii-tool 
a bit.

-- 
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University
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