Determine the ISTG Role Owner for a Site
Applies To: Windows Server 2008, Windows Server 2008 R2
The Intersite Topology Generator (ISTG) is the domain controller in each site that is responsible for generating the intersite topology. If you want to regenerate the intersite topology, you must determine the identity of the ISTG role owner in a site. You can use this procedure to view the NTDS Site Settings object properties and determine the ISTG role owner for the site.
Membership in Domain Users, or equivalent, is the minimum required to complete this procedure. Review details about using the appropriate accounts and group memberships at Local and Domain Default Groups (http://go.microsoft.com/fwlink/?LinkId=83477).
To determine the ISTG role owner for a site
Open Active Directory Sites and Services: On the Start menu, point to Administrative Tools, and then click Active Directory Sites and Services.
In the console tree, click the site object whose ISTG role owner you want to determine.
In the details pane, right-click the NTDS Site Settings object, and then click Properties. The current role owner appears in the Server box under Inter-Site Topology Generator.