DHCP reservations ensure that a specific MAC address always receives the same IP
address dynamically. In Address Manager, the equivalent of a DHCP reservation is a DHCP
DHCP reserved addresses are always excluded from a DHCP address pool. This ensures that
an IP address is assigned only to a specific MAC address.
In Address Manager, you can create a DHCP reservation both inside and outside a DHCP
range; however, Windows Server 2008 or greater, and Windows Server 2012 or greater, do
not allow you to create a DHCP reservation outside of a DHCP range.
Deploying a reservation outside of a DHCP range to a Managed Windows server (2008 or
greater) creates an invalid configuration, however, Address Manager helps to avoid this
problem. If you create a reservation outside of a DHCP range and deploy it to a Managed
Windows server (2008 or greater) upon deployment, the DHCP address pool in Windows
expands to include the reservation. Any additional IP addresses created inside the
enlarged range are deployed as exclusions.
Note: As a best practice, BlueCat recommends
that you configure DHCP reserved addresses inside the DHCP range.