Designating A Preferred Bridgehead Server

By Author: Mike Jones
Total Articles: 256

Bridgehead servers are the contact point for exchange of directory information between free 70-291 test questions sites. Replication occurs between bridgehead servers in different sites. When two sites are connected by a site link, the KCC automatically selects bridgehead servers—one in each site for each domain that has domain controllers in the site. The KCC then creates inbound-only connection objects between bridgehead servers. You can designate bridgehead servers manually if you want the same servers to be always used as bridgehead servers.
You can specify a preferred bridgehead server if you have a computer with appropriate bandwidth to transmit and receive information. If there's typically a high level of directory information exchange, a computer with more bandwidth can ensure these exchanges are handled promptly. Matching the demands of your Active Directory deployment with a domain controller having the capacity to handle those demands can help to enable efficient updates of directory information. You can specify multiple preferred bridgehead servers, but only one in each site is the active preferred bridgehead server at any time.
You must specify a preferred bridgehead server if your deployment uses a firewall to protect a site. Establish your firewall proxy server as the preferred bridgehead server, making it the contact point for exchanging information with MCSA required exams servers outside the firewall. If you do not do this, directory information might not be successfully exchanged.
Replacement of a Failed Preferred Bridgehead Server
If a preferred bridgehead server fails and you want the KCC to be able to fail over to other domain controllers but there are no other preferred bridgehead servers available, you must perform one of the following tasks at a domain controller in each site:
Add new domain controllers and designate them as preferred bridgehead servers for the corresponding directory partitions, site, and transport. If there is more than one domain represented in the site, you must add a preferred bridgehead server for each domain.
Remove all preferred bridgehead designations that you have made for the corresponding directory partition, site, and transport, and allow the KCC to select new bridgehead servers automatically.
Because the KCC creates only inbound connections, a bridgehead server cannot create an outbound connection to another bridgehead server. This is the reason why changes to preferred bridgehead server status must be made on a domain controller in each affected site so that inbound connections are created in each site. This process might require two administrators if the site locations are far away from Free practice exams for MCTS each other.