I am running a Dell PowerConnect 5448. I upgraded the firmware from 220.127.116.11 to 18.104.22.168 (the latest as of this writing). However when I try and PXE boot the ghost client I get the following error:
Application Error 19913
Unable to start TCP/IP
Can't find DHCP server
Possible Network setup Problem
If the problem persists, contact Symantec Technical Support at http://service.symantec.com.
This is because the Dell PowerConnect 5448 for some reason takes up to 9 seconds to relay a DHCP request from the switch to the DHCP server. The problem could not be resolved, the only resolution was replace the switch.