Hi,
To change the IP of a Domain Controller.
Change IP address of the DC and then run ipconfig /registerdns and restart netlogon on it.
Here is the steps i would suggest you...
- Assign a temporary IP Address to the new DC (Still a member server at that time)
- Promote the new DC
- Assign a Temporary IP Address to the old DC (the schema update will be done at the same time)
- On the old DC, run ipconfig /registerdns and restart the Netlogon service
- Assign the IP Address of the old DC to the new DC
- On the new DC, run ipconfig /registerdns and restart the Netlogon service
- Transfer the FSMO roles to the new DC
- You can wait few days just to be sure that everything is ok before removing old DC's
Repeat the steps 1 to 6 for all new DC's
For the DHCP, you mentioned that you want to move the DHCP on another server (other than the DC's)
Prerequisites: DHCP Relay for sure also if you have IPHelper configuration in your main switch, you must ensure the new DHCP Servers are listed
- Backup the DHCP Server
- This can be done using a simple netsh command --> export c:\temp\dhcpdb_DC1 all
- Stop the DHCP Service on the Old DC
- On the new DHCP Server, install DHCP Role and authorize it but do not configure it
- Import the DHCP Backup using netsh command --> import c:\temp\dhcpdb_DC1 all
Repeat steps 1 to 5 for all DHCP Server
As a prerequisite for Domain migration, be sure that the SYSVOL has been migrated to DFSR
https://techcommunity.microsoft.com/t5/storage-at-microsoft/streamlined-migration-of-frs-to-dfsr-sysvol/ba-p/425405
hth