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Aids and Tools for Networking Certifications

Site Link Costs

Replication between sites is scheduled so that you can control replication costs and keep replication from overwhelming your communication links. Several factors contribute to the speed of replication between sites, including the nature of the physical connections and how expensive they are to use. Active Directory supports site connections in all speed ranges, from T3 links on the high end to dial-up lines on the low end. You use the speed of the connection between your sites to assign a cost to the communication link, and replication uses the cost to establish the least expensive route for replication traffic.    (From the Resource Kit)

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