Create a Tree in Existing Forest in Active Directory
A tree, you may recall, is a group of domains that share a contiguous namespace. A parent domain and its "descendents" (child domains and their child domains, and so on) make up a tree. As shown below, the name of each child includes its parent's name as part of its own:
After you establish the root domain, you can add a new tree to the existing forest if your network plan requires multiple trees. Like the process for creating a root or child domain, creating a tree is fairly straightforward. You should practically be able to complete this
process in your sleep by now.
How to create a tree
Tell the wizard that you'd like to create a tree, rather than a child domain.
Opt to place the tree in an existing forest, as in this example:
Then make the following specifications:
The username, password, and domain name of a user account in the Enterprise Admins group, which exists in the root domain of the forest
The DNS name of the new tree
The NetBIOS name of the new domain
Locations of the Active Directory database and log files
Location of the shared system volume
Whether to weaken permissions to support users who access the network through remote access servers running Windows NT 4.0
The wizard will complete the installation process by adding three new consoles to the Administrative Tools menu on that computer. In the next lesson, we will wrap up this module.