We have acquired a new company and we're looking to bring them onto our network. We have a major problem our internal IP's subnets conflict with one another. We must change all of the IP's at one of the companies. I created new subnets but now I need a step by step how to and get them all switched over ASAP. Any suggestions will be appreciated.
Windows 2012r2 Active directory domain.
600 devices, switches, printers, laptops, desktops, servers etc.
1) DHCP - Create new Scopes on the DHCP server, but don't enable them yet.