I am automating Task Sequence testing by making Required Deployments for temporary Task Sequences in temporary Device Collections for temporary VMware virtual machines.
I have a problem in that 25-50% of the time the virtual machine will not get load the boot image and start the Require Deployment and it enters the boot menu. Usually a reboot will make the virtual machine try again successfully, but not always.
For deployments that don't start to load the boot image, I can see from the logs that the MAC is a match and that the correct Task Sequence is being offered, but no TFTP connections start.
Some facts:
* SCCM PXE Responder - but I have tried with WDS with the same result. PXE Responder has better logs.
* IP Helper to Distribution Point with SCCM PXE Responder
* MAC, device collection, Task Sequence are always unique.
* DHCP Delay at 100ms (saw it in a different thread, but it hasn't helped)
* Tried both E1000e and VMXNet3
* Changed TFTP Window Size to 4 and Block Size to 1456 (which seems to be what VMware prefers or can handle)
Is there any way I can figure out why I can't get a 100% successful result in getting devices to load the boot image and start the required task sequence?
Thanks for any pointers in turning on verbose logging or any other helpeful tips.
