Mastering Active Directory - Second Edition

Bridgehead servers

In the AD infrastructure, the Knowledge Consistency Checker (KCC) is a built-in process that runs on domain controllers and is responsible for generating replication topology. It will configure the replication connection between domain controllers. When it comes to replication between sites, KCC selects a domain controller as a bridgehead server, which sends and receives replication traffic for its site. If you have multiple domains in multiple sites, each domain should have its own bridgehead server. A site can have multiple bridgehead servers for the same domain, but at a given time, only one will be active. It is decided based on the domain controller's lowest GUID value. In the AD environment, if AD involves an intra-site ...