08R2 Active Directory Migration Upgrade 2012r2--(Legacy secondary domain controlled demotion)

The following actions are performed on the old secondary domain controlled Windows Server R2
Run--dcpromo




Set the local administrator password, this password to remember

Check that the settings are correct

Demote the fallback domain and modify the IP address of the old secondary domain, then change the IP address of the new secondary domain to the old secondary domain-controlled IP
Domain control Modify IP address step:
1. Run the net stop Netlogon stop Netlogon service
2. Modify the IP address
3. Refresh the DNS cache: Ipconfig/flushdns
4. Run net start Netlogon to start the Netlogon service
5. Run command Register DNS information: Ipconfig/registerdns

08R2 Active Directory Migration Upgrade 2012r2--(Legacy secondary domain controlled demotion)