This has been driving me mental because im sure i've forgot something.
Basicaly our offices in london are moving, and they are getting a new dc, which will do dhcp and dns for there branch office.
I have setup the dc, connected it to our current domain and replicated it with the other domain controllers. everything appeared to have gone fine, machines can be joined to the domain from the new domain controller, and i have been able to log in to the domain from a client attached to that domain controller.
However i cannot figure out why i cant ping any thing on the old subnet, despite nslookup resolving the names/ip's correctly i cannot connect to or ping anything on the other subnet. i simply get a request timed out error, there is also currently no firewall to prevent it working.
Ive been over the dc settings a million times, and everything appears to be setup correctly, but i must have missed something.
Any help would be much appreciated