I have a network with 14 computers and 3 servers.
Servers are running server2k and all computers are runing winxp.
I have one deomain controller with active directory and a DHCP service.
I have 3 room with 4 computers all connected though a hub and all hub are connected to the network to a swicth (3com 3C16471) except 2 computers that are connected directly to the switch.
In order to improve the connectivity in the whole network i decided to redo the network.
So i placed network cable for every computer (each one is directly connected to the switch).
All cables are tested and work perfectly.
In the previous configuration, computers that were directly connected to the switch work in the new configuration but alle the other computer won't work and i'm facing the following problem:
- Some can't get an IP address from the DHCP and are assigned a default address that starts with 169 that limits the connectivity, => no internet no nothing.
- Other computer just display the "a network cable is unplugged" notification (all cables work perfectly are tested so cables are not the problem)
I spent a lot of time redoing the network and i don't want to go back to the old configuration.
Do you have an idea of what is the problem and how do i fix it?