A. Site link bridges are important for intersite communication. Imagine you have the sites Liverpool, London, and Kent, and you have site links between Liverpool and London and between Kent and London, as the Figure shows. If site link transitivity is disabled, Liverpool and Kent can’t communicate. A site link bridge lets London act as a router for communication between Liverpool and Kent.


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If site link transitivity is disabled, you must manually bridge sites so that replication can complete and the Knowledge Consistency Checker (KCC) can create the necessary connection objects.

  1. Start the Active Directory Sites and Services MMC snap-in. (Select Programs, Administrative Tools, Active Directory Sites and Services from the Start menu.)
  2. Expand the Sites branch.
  3. Expand the Inter-Site Transports branch.
  4. Right-click the protocol you want to create the bridge for (i.e., IP or SMTP), and select New Site Link Bridge.
  5. Enter a name for the bridge, and select the site links that will form the bridge, as the Screen shows.




  6. Click OK.