Over the weekend I changed our clustered DHCP from 2003 R2 to 2008 R2.
I used the following guide:
The migration didnt exactly go according to a plan. The first part of the migration did not actually migrate the DHCP services, although it did migrate the cluster name and IP. The solution was to create a clustered DHCP service from scratch. Then migrate the database into the new clustered service.
Today I discovered it will not allow me to add reservations with the error:
The specified DHCP client is not a reserved client.
I can confirm the DHCP is authorized and properly handing out DHCP leases. I can also confirm that old reservations work correctly.
The example in this case