The Knowledge Consistency Checker (KCC) is a Microsoft Windows AD component that automatically generates and maintains the AD intra-site and inter-site replication topology.

You can disable the KCC’s automatic generation of intra-site or inter-site topology management, or both: http://support.microsoft.com/kb/242780
 
How to disable the Knowledge Consistency Checker inter-site topology generation for all sites : http://support.microsoft.com/kb/245610/en-us
 
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Problem:You want to disable the KCC for a site and generate your own replication connections between domain controllers.

Solution:

  1. Open ADSI Edit.

  2. Connect to the Configuration Naming Context if it is not already displayed.

  3. In the left pane, browse to the cn=Sites folder.

  4. Click on the site you want to disable the KCC for.

  5. In the right pane, double-click CN=NTDS Site Settings.

  6. Modify the options attribute. To disable only intra-site topology generation, enable the 00001 bit (decimal 1). To disable inter-site topology generation, enable the 10000 bit (decimal 16). To disable both, enable the 10001 bits (decimal 17).

  7. Click OK.