Intel PXE bootroms

Matthijs van Leeuwen m.vanleeuwen at
Fri Jul 20 02:08:47 PDT 2001

-----Original Message-----
From: Gary Jackson [mailto:bargle at]
Sent: Friday, July 20, 2001 2:04 AM
To: beowulf at
Subject: Intel PXE bootroms

> I'm having some trouble getting machines using Intel PXE bootroms
> netbooting.  The machine with the DHCP server sees their requests, and
> responds, but the clients don't seem to want to boot with what they've
> been given.  Once Linux is up, I have no problem getting an IP through
> DHCP.  Portfast is enabled on all relevant switch ports.

> I haven't had any problem getting nodes with 3com PXE bootroms to
> boot.

We found it's better to use etherboot instead (with the SuperMicro DLE
it's even best to switch off PXE all together in the BIOS).
PXE doesn't seem able to cope with a DHCP server which doesn't respond
straight away. It just gets stuck. Etherboot keeps trying and will
boot as soon as it gets a DHCP reply, however long it takes.

Good luck,
Dr ir Matthijs van Leeuwen
HPC Specialist
Compusys Plc, 58 Edison Road
Rabans Lane Industrial Estate
Aylesbury, Bucks HP19 8UT, UK
Tel: +44 (0)1296 505143
Fax: +44 (0)1296 424165
Email: m.vanleeuwen at

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