XenServer 7.0 iPXE errors downloading SCCM image

[dazzlr]

So thanks for the reply NiKiZe, that really helped and I manually changed the config to point to a legacy Altiris boot file as a test, and that actually connected OK.

Filename: BStrap/x64/BStrap.0
tftp://xxx.xxx.xx.xx/BStrap/x64/BStrap.0... OK

Altiris, inc. X86PC PreBoot, PXE-2.x Enhanced
Build ID=402

PXEPreZero: Invalid PXE Server list format.

So the issue it seems is with our TFTP boot program wdsnbp.com and the other errors look like they can be safely ignored. I believe this file is either the original one that comes with SCCM, or perhaps a modified version... I'll need to check with our SCCM guys but this boot file is used throughout our organisation to build (thousands of) machines via SCCM so it seems that only XenServer 7.0 is having a problem with it. I'll do some digging and see what Citrix requires from a bootfile and what the problem might be.