DHCP Scope Splitting. A Dynamic Host Configuration Protocol (DHCP) split-scope configuration using multiple DHCP servers allows for increased fault tolerance and redundancy over using only one DHCP server.
This step-by-step guide contains an introduction to using DHCP with a split scope on a secondary server, with delay, and instructions for setting up a test lab using two DHCP servers and one DHCP client. Requirements of DHCP Scope Splitting.
You must have 3 computers running Windows Server 2012 as follows:
Configure DHCP Scope Splitting: