I'm sure people have had this problem before.

We have a core switch at a location that has DHCP temporarily located on it. It's a Cisco 6509.

When we have the core switch handle DHCP, we aren't able to PXE boot. I'm not sure why. I tried adding ip helper-address into the VLAN interface (this is what we normally do when DHCP is not located on the switch) but does not work.

Does anyone know any command that can make my scenario work or am i out of luck?