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AD & DNS

Posted on 2004-08-30
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Last Modified: 2010-08-05
I am having a lot of trouble with Active Directory/DNS.  I have three subnets with two domains originally setup under NT4.  The first domain on subnet 1 was converted to Windows 2000 with Active Directory and DNS using two domain controllers. DC 1 is the Global Catalog server and DC2 is the Infrastructure Update Master.  Subnet 2 is at a remote site connected through a VPN router. This site has a DC (DC3) for servicing logon requests for their local users and simply supplies file services. This site belongs to the first domain.

Subnet 3 belongs to Domain #2.  I upgraded the DC (DC4) in the second domain and made it a child domain of Domain 1.

My questions are:
1.) Should the DC at the remote site (parent domain) and the DC on subnet 3 (child domain) each be GC servers?

2.)Should all the servers point to themselves as the Preferred DNS server?

3.) Are there any other special considerations for this type of environment?
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Question by:GPScribner
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JamesDS earned 1500 total points
ID: 11931461
GPScribner

1. Yes, in your environment all remote DCs should be GCs

2. The manual says yes, but this has been known to lead to DNS island. I always point them to another DC/DNS as primary and themselves as secondary. This is a common solution to the DNS Island problem.

3. depends... consider bandwidth, the "importance" of remote users. how your subnets are configured in AD Sites and Services. We would need more information to give you a really good reply.

Cheers

JamesDS
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by:GPScribner
ID: 11931622
James,
Thanks for the quick reply.
Another question:  Should i have seperate AD sites for my main location (domain 1), my remote site (domain 1) and domain 2?  Right now I do (Site 1, Site 2 (remote site) Site 3 (second domain)). I setup the 3 subnets and assigned them to the corresponding AD sites?  
Should the remote network be under Site 1 since it belongs to the same domain? Am I all wet on this?

There are not of users at our remote site but they are important.
Thanks,
Greg
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by:JamesDS
ID: 11935469
Greg

Yup, seperate subnets, otherwise your users will logon to a random DC, not the one closest

Create new sites for each location and move your remote DCs into those sites.
Cheers

JamesDS
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