On the Joining a Configuration Set page, you must specify an Active Directory Lightweight Directory Services (AD LDS) instance from which to replicate the configuration and schema directory partitions for the new AD LDS instance that you are installing. The AD LDS instance that you specify on this page also determines the AD LDS configuration set in which the new AD LDS instance will participate.


If you are installing a replica AD LDS instance into an existing configuration set that includes AD LDS instances in multiple forests, use the full Domain Name System (DNS) name, rather than the IP address, when you specify the source AD LDS instance from which to replicate.

Additional references