In Active Directory, a bridgehead server is a domain controller that is responsible for handling replication traffic between sites. The bridgehead server acts as a central point for replication traffic and optimizes the replication process by reducing the amount of traffic that needs to be transmitted over the network.
When two or more sites are connected by a site link, replication traffic flows between the domain controllers in the different sites. However, to optimize the replication process, a bridgehead server is designated as the preferred replication partner for each site. This means that replication traffic between sites is first sent to the bridgehead server, which then propagates the changes to other domain controllers in the site.
By designating specific domain controllers as bridgehead servers, replication traffic can be optimized and network bandwidth can be conserved. The bridgehead server also helps ensure that replication traffic is reliable and consistent by managing the replication schedule and monitoring the replication process.
It’s important to note that each site should have at least one bridgehead server to ensure reliable and efficient replication between sites. Additionally, when designing site link topology, it’s important to consider the available network bandwidth and the number of domain controllers in each site to ensure that replication traffic is optimized and efficient.
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