Move DHCP server
To move a DHCP server from one server to another, weather it be windows Server 2000, 2003, 2008, 2008 R2 or 2012.
One the Source server export the DHCP configuration
netsh dhcp server export C:\dhcp.txt all
copy the dhcp.txt file to the new server and then run the following command to import the configuration.
netsh dhcp server import c:\dhcp.txt all