Company A acquired Company B. Both companies have two primary AD sites where servers are housed. Currently there is an 80% IP address conflict. Two new IPv4 subnets has been created at Company B, (one at each site) which won't conflict at all with any subnet at Company A. Eventually all servers and VDIs will live in that subnet. The re-IP project will take at least a year so both entities are looking to establish a forest trust prior to its completion.
My question:
Can Company B add 2 new Domain Controllers at each site in the new, non-conflict IPv4 subnets, define those as the preferred bridgehead DCs and establish the forest trust to and from those with partner DCs that are also on a non-conflict subnet? Would
While there are still IP conflicts, servers such as Sharepoint can be NATed. Exchange at company B is already in the non-conflict subnet.