I had this question after viewing Removing DHCP Server and Clients are not getting address from new server i've installed.
I am getting ready to shut down a server running windows server 2008 with dns, dhcp, etc. I am going to completely get rid of this server. I have a new Windows 2012 server set up with DNS, and is now the primary domain controller within the network. The only service it is not running is dhcp. I want to set up an entirely new scope on the new server. (I inherited the old one and it was set up with a 20. range.) I was told I should change to the 10. (private network) range.
What is the best way to go about this?