[Beowulf] strange PXE reboot behavior
galitz at berkeley.edu
Wed Sep 15 16:13:11 EDT 2004
We have a strange problem. We have 20 nodes with SE7501CW2
motherboards, and about 5 of them seem to fail their POST and reboot
only when the gigabit NIC is plugged into a gigabit switch. If we
unplug it, the node functions normally. If we plug it in after the
comes up, it crashes immediately.
My only thought at this point is auto-negotiation, but I cannot seem to
turn off auto-negotiation on these motherboard/NIC combos. Ethtool
to change the parameters on the cards.
Any other ideas?
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