How to fix: pxe-e51 no dhcp or proxydhcp offers were received
Solution: pxe-e51 no dhcp or proxydhcp offers were received
This error is usually received when the client booting up via PXE is having difficulty communicating with the DHCP/PXE server. The common troubleshooting steps and/or causes of this problem are as follows:
1-The PXE client is connected to a managed switch that does not have portfast enabled and/or is running spanning-tree. Portfast will need to be enabled.
2-The DHCP/PXE servers reside on a different subnet than the PXE client. IP helpers need to be in place.
3-Check the DHCP server and verify that the DHCP scope has free IP addresses to lease out (make sure they are not all used up).
4-If the above steps do not correct the issue, place the DHCP Server, PXE server and a client computer on a hub. Test PXE to see if the same message is received. If the same error message is not received, this is a good indication that there is some factor on the network not permitting the DHCP/PXE protocols to be passed down to the client computer.
Place a hub between the PXE client and the switch the client is connecting to. If at this point the PXE client works successfully, please review step 1 of this article.