Replication with Domain and Sub domain in Active directory sites and services

Question

I seen many AD enviroments and know that when you have mutiple DCs you use Active Directory Sites and services to replicate using the NTDS Settings. If you have a Domain and sub domain do you need to do this as well or does it sync up automatically because
it's a sub domain? A see a couple of domains where the NTDS settings isn't being used to snyc with the child domain. Just wondering if that is normal or will it cause authentication errors?

Answer 1

I seen many AD enviroments and know that when you have mutiple DCs you use Active Directory Sites and services to replicate using the NTDS Settings. If you have a Domain and sub domain do you need to do this as well or does it sync up automatically
because it's a sub domain? A see a couple of domains where the NTDS settings isn't being used to snyc with the child domain. Just wondering if that is normal or will it cause authentication errors?
Two way transitive trusts are configured automatically when you create a child domain or tree root domain. You don't have to worry about site/subnet or replication part at least from trust perspective. But make sure site's names are unique in each domain.
How Domain and Forest Trusts Work
http://technet.microsoft.com/en-us/library/cc773178%28v=ws.10%29.aspx
http://technet.microsoft.com/en-us/library/cc730868.aspx
http://blogs.technet.com/b/askds/archive/2008/09/24/domain-locator-across-a-forest-trust.aspx
Awinish Vishwakarma - MVP
My Blog: awinish.wordpress.com
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