Domain Functional Level Command

Feature set of a particular dfl will be available for a dc if it runs on the operating system version that is compatible with the functional level.

Domain functional level command. Specifies the name of the cluster on which to run this cmdlet. Note that the os version constraint is only for the domain controller and not applicable for the member. Under the general tab the domain functional level and forest functional level is displayed on the screen.

Right click the root domain then select properties. Functional levels determine the available active directory domain services ad ds domain or forest capabilities. The domain functional level cannot be lower than the forest functional level but it can be higher.

Use below command to get forest functional level ffl. The lack of windows nt 4 0 bdcs is implied by meeting the forest level requirement of all domains at windows server 2000 native level or later. Dsquery dc lab dc local scope base attr msds behavior version ntmixeddomain.

Get adforest gets an active directory forest. However functional levels do not affect which operating systems you can run on workstations and member servers that are joined to the domain or forest. The functional level can be increased and also decreased as long as no feature that requires that functional level is in use such as the active directory recycle bin.

0 0 windows 2000 native 0 1 windows 2000 mixed 2 0 windows 2003 3 0 windows 2008 4 0 windows 2008 r2 5 0 windows 2012. This command updates the cluster functional level of the cluster named cluster 17. However when you try to increase to windows server 2003 forest level with domains in windows server 2000 the mixed level is blocked.

They also determine which windows server operating systems you can run on domain controllers in the domain or forest. Get domain functional level using dsquery. The output would look like below.