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Booting to PXE doesnt work but using a boot disk works

Created: 12 Nov 2012 | 4 comments

Ok heres a new thing that ive come to see.

I am getting a PXE-E51: No DHCP or proxyDHCP offers were received but when I am using a CD boot, that works fine and boots me into automation.  Has anyone seen this? anyone have any ideas?

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md investigate's picture


here you go:

If there are some question feel free to ask!


Rajaganesh's picture

The above mentioned article holds good for DS 7.1 too.

Besides this you can also check the aticle :Article URL  to get a better insight of whats going on in the background.

tzam's picture

I have checked all of those mentioned in the article.  This only happens with 7010's.  If I use say a 790 in the same port, I have no problems PXE booting, but with the 7010 its not working.

Nelo's picture

This is from another forum (HP that uses DS for HP's RDP) See if any applies to you.

This error can occur for a few different reasons. 

1) Spanning-Tree is enabled on your Cisco switch and Port-Fast is not enabled on the Host ports. You need to enable Port-Fast on all ports that have PXE clients attached. This disables loop detection on those ports, but it is a common practice on host ports.

2) DHCP is not available or not Authorized (MS AD). In your case, this does not seem to be the case. 

3) If multiple NICs are in your PXE client server, ensure you are plugged into the corret NIC. Some NICs tell you when the cable is not connected, others don't.

4) DHCP is on another network segment and there is no DHCP proxy agent or helper address (on the router).

Source is