@george1421 oh, it works, i disabled the DHCP of the home router and connect the fog server back to the building network

@george1421 ok, thanks for the help : )

@george1421 ok, so what the network team needs to do is enable RSTP, MSTP, or fast-STP and FOG should work?

@george1421 oh, it works, i disabled the DHCP of the home router and connect the fog server back to the building network

@george1421

blue cable = fog server
white = network
red = pxe booting pc

@george1421 yes, both them are using the same DHCP server and the DHCP is distributed by a server machine on our network central that distribute internet to all the subnets in the university (and the image represents one of those subnets).

@Sebastian-Roth This two FOG servers in the image are the same, but i tryed to show the case that it works and the cases that it doesn’t worked. All the switches are on the same subnet, the ips of that subnet: 200.236.22.129 to 254, and the DHCP is beeng served by an “external” DHCP server.

I’m setting up FOG in the computer labs of my university, i already have tested in one of them, and everything works fine, but in the other one i couldn’t even register the PCs in the FOG server, im getting this error:

I have done some tests. That’s how the network infrastructure looks like, and the tests i did.