Spanning Trees are usually the biggest culprit in pxe booting and switch problems. For SMC switches I think you just need to do something like:<br><br>telnet smc<br>enable<br>config<br>interface ethernet 1/1 # if this is the interface your client node is on<br>
spanning-tree edge-port<br>exit<br>copy run start<br><br><br><div class="gmail_quote">On Wed, Dec 2, 2009 at 10:36 AM, Hearns, John <span dir="ltr"><<a href="mailto:john.hearns@mclaren.com">john.hearns@mclaren.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im"><br>
I've tried resetting the SMC switch to factory defaults (with<br>
auto-negotiate on). I've checked the /etc/beowulf/modprobe.conf and it<br>
doesn't seem to be demanding anything exotic. We've tried swapping out<br>
to another SMC switch but that didn't change anything.<br>
<br>
</div>No idea really, as I don't use SMC switches.<br>
First thing I would do would be to get a laptop with Linux on, and<br>
attach it to the SMC switch.<br>
Configure the Ethernet interface to use DHCP, then ifconfig it down then<br>
ifcoinfig it up.<br>
Run tcpdump eth0 as you do this, and tail -f /var/log/messages<br>
<br>
<br>
If it gets a DHCP address (and of course on the cluster head node there<br>
is a pool of free DHCP addresses configured)<br>
the test tftp file transfer. Set the tftp daemon on the head node to run<br>
in debug mode, and start it up.<br>
Try a tftp get of a test file on the laptop.<br>
<br>
<br>
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