Two Domans. One IP range. One Cabling Infastructure.
I work in a school that is using a x.x.x.x (255.255.255.252.0)
We are going to become an Academy in the very near future and I have set up my new network (PDC, DC, Mail, WDS servers) all with static IPs using x.x.x.x (255.255.255.252.0)
The IP addresses cannot be changed as these are governed by our LA/ISP, without some (I assume) expensive kit that we do not currently own.
My current Mail server is x.x.x.2, and my new mail server is set as x.x.x.16.
My current domain has DNS/DHCP enabled and is still live.
My new doamin has DNS/DHCP set up but these servers are currently connected on a dedicated switch, keeping them off my current domain.
At some time, I am going to want to start building my PCs (F12ing them and using the new domain WDS server).
What I want to know is, how, or even IS is possible to have both of my domains running on the same IP range and subnet mask, at the same time, on the same cabling infastructure?
I understand that I will need to turn off DHCP/DNS on my existing domain so that all PCs will start looking to the new domain DNS/DHCP/WDS, but ideally I would like to keep a few PCs "live" on my existing domain, and all mail still being sent to the corresponding email server.
Or, will it be a case that I will have to decide on a date when the existing domain will no longer be available, and just "turn it off"?