KACE Product Support

I'm working on setting up and testing the K2000 and I'm unable to get an IP address when I boot via PXE. I have the options set in DHCP and when booting to Windows I can get an IP address on the machine. I'm using legacy BIOS not UEFI. We have spanning-tree enabled on our HP switches. Could this be the reason why it won't grab an IP address during the PXE boot? I asked our dedicated Dell engineer for the trial periods and he didn't know.. I've read online that spanning tree makes the PXE boot time-out because it takes too long to get an IP address. I'm pretty sure I have everything configured properly. I can ping the DNS machine from the client, I can TFTP into the appliance from the client machine...I can do everything but can an IP during PXE boot.