Domain Functional Level History
Today i recognized that it is not easy to find a comprehensive summary table about active directory domain and forest functional levels operating mode on the internet.
Domain functional level history. In previous versions of windows server changes to domain functional levels dfl and forest functional level ffl could not be rolled back. Welche domain controller bei welchem domain functional level unterstützt werden geht ebenfalls auf der liste hervor. The domain functional level is raised to the second functional level by using the ldp exe utility or the adsiedit msc utility. Im domain vergabeverfahren ist es ein im internet weltweit einmaliger und eindeutiger und unter gewissen regeln frei wählbarer name unterhalb einer top level domain die exakten regeln für die namensvergabe legt die vergabestelle.
Die folgenden tabelle stellt dar wie sich die windows server versionen bezüglich domain functional levels geändert haben. It would be helpful. What is the domain functional level dfl. Open up powershell and run following cmdlets.
There are some explanations with the functions up to windows server 2008 r2 and some on the differences between windows server 2008 r2 and windows server 2012. The domain functional level is programmatically raised to the second functional level by directly modifying the value of the msdsbehaviorversion attribute on the domaindns object. With windows server 2008 r2 you can now revert back or lower both the domain functional level and forest functional level of your domain provided you meet the specific conditions and limitations of this new feature described below. Functional levels determine the available active directory domain services ad ds domain or forest capabilities.
Open up active directory domains and trust can be located in administrative tools right click on domain and click on properties domain functional level and forest functional level can be seen in the general tab of properties. They also determine which windows server operating systems you can run on domain controllers in the domain or forest. 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.