PENDING Issues with PXE Boot and TFTP Timeouts

[MarcK]

Hey there,

we have issues regarding PXE boot and resulting Timeouts.

Information about our Site:
- on the Main Site we host the CM & DP for Main Site and the DP for Remote Site (with PXE Responder and not WDS)
- VPN Connection to Remote Site
- Remote Site Router has IP-Helper IP Address for DHCP and Remote Site DP

PXE Boot and Installation on Main Site function flawlessly
PXE Boot fails on Remote Site with PXE Timeout issues.
UEFI PXE Boot works as expected and boots and installs flawless. (i guess it is due to http being used instead of tftp)

I have made a tftp Connection from Remote site to the DP for the Remote Site and could download files.
When i PXE boot a Client on the Remote Site it falls into a PXE-E32 TFTP open Timeout Error.

There are not double Entries for MAC and GUID.

Does anyone have an Idea what could be going wrong?

Cheers and thanks.

Here The Log File:

 

[abarzyk]

So I had the same issue. Realize that the SCCM server IS your dhcp server... yes it answers DHCP requests from clients. You may need to add an IP helper at your remote site for the SCCM server with PXE services enabled in your primary site. What I would up doing is creating a vLAN for imaging at each site with IP helpers at each site set to the SCCM PXE server in those vLANs and the DHCP servers for the old "normal" vlans. This has the added benefit of not allowing an end user to accidently reimage the device -- and you then don't need a password or F12 key to PXE boot a client. You do, however, need switch the vlan on the client machine's switch port.... Can be a pain... In my environment we simply setup a "bench" with the vlan set to the PXE boot vlan for every connection there and we bring and image the workstations on the "bench." Imaging servers is a breeze as we just need to trunk the port to the host server and then can flip the vlan on the VMs to image them.

 

[MarcK]

Hello Abarzyk, the IP Helpers are aleardy in Place and since we receive requests in the SMSPXE.log, the client is able to reach the DP. There are also no Firewall restrictions between the Sites. If you had the Issue, what was your solution to the Problem?