PXE - Booting issue (strange)

[Tom Elliott]

I’m just going to guess here.

You have at least two DHCP Servers. One of those dhcp servers is responding faster than the other DHCP Server (which appears – from the info here) to be the one you “don’t” want to use.

Why not just turn off the other dhcp server?

[Tom Elliott]

That, or, configure the other dhcp server to point at the new fog server as well.

[ITCC]

nope, one DHCP server

[ITCC]

[ITCC]

it’s back in the office now and still doing it, so not switch equipment.

[george1421]

@ITCC Does this system have a dhcp reservation set on your dhcp server?

[ITCC]

have checked twice, no reservation.

Also works after pause, thought that would still resolve incorrect reservation info.

[ITCC]

we have a winner!

[george1421]

@ITCC And…

My next step is to confirm that everyone is in the same subnet then setup a packet capture into a pcap file so we can see where that alternate IP is coming from.

[ITCC]

Tom Elliott, got me thinking about a “copy” of our windows DHCP server on another DC, that was a backup to when we had issues.
this DHCP is never to be switched on and it’s approx 3 years out of date.

Guess what, somehow (someone) has authorised this scope.

• Although, no stats showing used IP’s, when deactivated the PC continued beyond the loop.

Thanks to everyone who helped.

[Wayne Workman]

@george1421 said in PXE - Booting issue (strange):

@Wayne-Workman said in PXE - Booting issue (strange):

Check your DHCP option 66 and 67.

Is the dhcp discovery tool ready for prime time?

@Sebastian-Roth Have you had any time to mess with this?

[Tom Elliott]

@Wayne-Workman I’m fairly sure Joe already is on it. Though of course Sebastian probably needs the “finishing” touches lol.

[Sebastian Roth]

@Wayne-Workman said:

@Sebastian-Roth Have you had any time to mess with this?

Have been on a short holiday far away from net and power… but working on it right now.