Question

Setting up sites and subnets

Asked by: bleujaegel

If the purpose of having a remote site is to replicate AD information, what is the process of installing a new domain controller at the remote location.  Do you promote it to a domain controller at the remote site?  When I attempt to do so, I get an error stating that the Domain Controller for my domain cannot be contacted.   The _ldap.tcp_.dc._msdcs.mydomain.com record cannot be located.   I disabled the firewalls temporarily, and I'm still getting the same problem.   I also setup the remote site and subnet in ADS&S.  

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2005-10-10 at 06:35:08ID21589537
Tags

sites

,

subnets

,

domain

Topic

Windows 2003 Server

Participating Experts
1
Points
500
Comments
4

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. wins and subnets
    we have 10 subnets separated by T1's 1 domain controller in each subnet which is also each subnets wins, dns and dhcp server. what should wins and dns be set to on the domain controllers in these subnets? right now some dc's are set to use themselves as wins and dns and some...
  2. Subnetting
    What are the advantages and disadvantages of creating subnets on a 2003 server network?
  3. Move DC to different subnet
    I have one AD domain with two DCs. Both DCs are on the same subnet in our datacentre. I would like to move one of the DCs to our headoffice location which is of course a different subnet. (Both locations are for some historic reason I do not know defined as the same site in ...
  4. Sites and Services (subnets)
    I have computers on one subnet that are not authenticating to the Domain Controller for some reason. The strange thing is there is a subnet for them that associates that subnet to their site. Other subnets have no problem authenticating to these local DC's. The network ID a...
  5. AD sites and services Subnets.
    When creating Subnets in AD Sites and Services,I believe I need to create only the subnets where the Domain controllers reside instead of all subnets in our network. Correct? we have in site1 DCs that are in the subnet 10.20.20.x, but in this site they have other subnets wh...

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: HousenetPosted on 2005-10-10 at 07:12:47ID: 15052353

The first few replic sync's with AD are critical. The fisrt several syncs including enabling GC (The DC in the remote subnet must be a GC to process logins at that site without a working connection to the GC at HQ on the other side of the link) should be fully tested on the LAN before shipping the server to the remote site.

As for your specific error message....
-Are you pointing your DNS settings to the ADDNS ip in TCP/IP of the NIC on the remote server?
-Is there an ldap record in the _msdcs.mydomain.com->dc->_ldap.tcp_ in your AD DNS zone?

 

by: bleujaegelPosted on 2005-10-10 at 17:22:44ID: 15056635

Is it possible to join a computer to the domain from a remote location and promote it to a DC?  Obviously, this would be a security concern, so I'm assuming you can't.   Anyway, if you can't, then it sounds like you need to join it to the domain at the local site, promote it to a DC & GC server, configure sites and subnets putting the future remote DC it the remote site before shutting it down and moving it to the new location.  Am I wrong?

Housenet - in reply to your questions:
-Are you pointing your DNS settings to the ADDNS ip in TCP/IP of the NIC on the remote server?
>I tried putting in the local DNS IP into the remote DNS TCP/IP settings to attempt to connect the remote client, join it to the domain, and  promote it to a DC.  That's when I received the error message.

-Is there an ldap record in the _msdcs.mydomain.com->dc->_ldap.tcp_ in your AD DNS zone?
>Yes, there is an _ldap record in my AD DNS zone.

 

by: HousenetPosted on 2005-10-11 at 20:33:31ID: 15065988

bleujaegel "can you join a new DC and enable GC from a remote office" Sure you can...  Typically you should not. WHY?

-You can do it because if all the required ports are open between two servers are open, there is sufficient sustained bandwidth to handle initial replication traffic, and the remote server can fully query the AD-DNS server it will work. You shouldnt because most companies do not have the bandwidth and qos controls.

-It soulds like you cannot query the Ad-dns server. If that is the case it will not work...
Try this from the remote server...
If the AD-DNS server IP is 192.168.1.2, its called srv1 and the domain is called mycorp.lan
nslookup -q-soa mycorp.lan. 192.168.1.2 <enter>
nslookup -q-ns mycorp.lan. 192.168.1.2 <enter>
nslookup -q-a srv1.mycorp.lan. 192.168.1.2 <enter>

-What were the results?

 

by: bleujaegelPosted on 2005-10-12 at 22:56:42ID: 15074908

I tried nslookup from the remote computer, but get the 'Query refused' message.  I have DNS zone transfers set to transfer to any server, but still get 'Query refused'.   On another computer on the LAN (it's not a domain member), I get the 'Can't list domain' error.  It seems as though it's getting blocked due to security reasons.  I have to figure out how to relax the security to allow a zone transfer.   I will check the security settings in group policy.  Any ideas?

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...