Design elements - Active Directory Sites and Services
The vector stencils library "Active Directory Sites and Services" contains 12 symbol icons for drawing AD network topology diagrams.
"Active Directory® Sites and Services is a Microsoft Management Console (MMC) snap-in that you can use to administer the replication of directory data among all sites in an Active Directory Domain Services (AD DS) forest. This snap-in also provides a view of the service-specific objects that are published in AD DS. ...
Administrators who are responsible for forest-wide service administration can use Active Directory Sites and Services to manage the intersite replication topology for the forest. Administrators who are responsible for application services can be delegated responsibility for the service containers into which application-specific objects are published." [technet.microsoft.com/en-us/library/cc730868.aspx]
The shapes example "Design elements - Active Directory Sites and Services" for the ConceptDraw PRO diagramming and vector drawing software is icluded in the Active Directory Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.