WU Server : SCCM Primary Site Address : 8530
For the clients at the secondary site , the WU Server address was defined as of WSUS address for Primary Site. Therefore Clients travel all the way over WAN & reach to Primary Site for windows update.
This was basically misconfigured via some Group Policy.
Now i have removed the Group Policy …..Boundaries are also corrected somehow.
Now, How do i change this registry value to use WU server for Secondary Site for the clients residing under Boundary Group for Secondary Site.
Client re-installation is the one way…..which i have tested and after re-installation , clients are getting the correct WU Server address automatically.