what is ISTG ? who has that role by default?

Please refer the following articles: http://support.microsoft.com/kb/224815 http://support.microsoft.com/kb/224599 Santhosh Sivarajan | MCTS, MCSE (W2K3/W2K/NT4), MCSA (W2K3/W2K/MSG), CCNA, Network+ Houston, TX http://blogs.sivarajan.com/ http://publications.sivarajan.com/ This posting is provided "AS IS" with no warranties, and confers no rights.

Hi Muppuri, The ISTG is the one domain controller in the site that generates connection objects from domain controllers in different sites. It also performs advanced replication management tasks. Initially, the first server in the site becomes the ISTG for the site. The role does not change as additional domain controllers are added to the site until the current ISTG becomes unavailable. For more information about ISTG, please refer to: The Role of the Inter-Site Topology Generator in Active Directory Replication http://support.microsoft.com/kb/224815 Brent Hu, TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.comPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Any update? please let us know if you need more info..Santhosh Sivarajan | MCTS, MCSE (W2K3/W2K/NT4), MCSA (W2K3/W2K/MSG), CCNA, Network+ Houston, TX http://blogs.sivarajan.com/ http://publications.sivarajan.com/ This posting is provided "AS IS" with no warranties, and confers no rights.

Hello YOu can also read more on ISTG here http://www.isaacoben.com/2009/03/23/how-to-configure-inter-or-intra-site-topology-generator-istg-in-active-directory/Isaac Oben MCITP:EA, MCSE