PXE - some clients work, some don't... "No boot file name received"
Here's the scenario:
DS 7.1 SP1 (working OK, had to restart services every few days)
Upgraded to SP2 MP1
PXE Booting stopped working. Cause: SBSserver.exe missing
I've now been sent a copy of SBSserver.exe from another server (of the same version)
PXE booting works intermittently. Some machines receive the boot menu almost immediately, others never receive a boot file with the error "No boot file name received" error 53
There doesn't seem to be a pattern to this, Unknown and Known PCs are performing in the same way, I've also tried different models of PCs./
All PCs are on the same Cisco switch with IP helpers, Spanning tree with PortFast enabled.
I have tried a repair install, and also recreated the boot environment, tried cleaning out the files in SBSStore folder...
I'm running out of ideas... Before I completely uninstall the deployment solution and re-install, does anyone have any further ideas?
I'm pretty certain the switch config is OK as the old DS 6.9 server PXE booted fine when it was in use (6 months ago)