Changing IP of a Domain Controller
- If dcpromo has been done before the move
- Change Nic with a new static IP
- Run dcpromo again after the move to re-enable its role as a domain controller
- If dcpromo has NOT been done before the move
- Simple method:
- Change vNic with a new static IP
- Run dcpromo to demote
- Run dcpromo again to promote
- Complex method:
- Overload vNic with a new static IP
- Remove old IP
- Ipconfig /flushdns && ipconfig /registerdns
- Dcdiag /fix
- Validate domain controller health: Dcdiag /s:DCNAME
- Verify DNS Entries:
- correct a-record & IP association for DOMAIN
- reverse-lookup entries exist
- _msdcs > dc > _sites > [Site Name] > _tcp
- _msdcs > domains > [domain sid] > _tcp
- _sites > [Site Name] > _tcp
- _tcp
- _udp
- domaindnszones > _sites > [Site Name] > _tcp
- forestdnszones > _sites > [Site Name] > _tcp
- Change the DNS address in DHCP server configuration, if using DHCP for this scope
- Update Subnets in Active Directory Sites and Services
- Update each known client guest VMs DNS with the new IP address of DC
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