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Sub domain no longer around

Posted on 2005-04-12
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Last Modified: 2012-05-05
Here is the situation:

DC for blah.local is having issues because it cannot communicate with a DC from a subdomain called sub.blah.local. That server was moved to another location and now communication between the two is much more limited. Users report strange connectivity issues on both sides since they seem to not communicate well. Both servers are Win 2K, SP4, all patched up nicely.

My temporary fix was to move the users that are on sub.blah.local domain controller to another DC that has no part in this AD structure and their connectivity problems have dissapeared but I still have a server generating a ton of errors in the System log.

Same thing applies to blah.local, who cannot communicate with sub.blah.local. However, users there have no other domain to fall back to and they seem to have more problems with Exchange shutting down services every so often more than communication problems.

Should I remove the sub server from AD Site and Services, should I remove any trust relationships among the two, or what should I do?
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Question by:edentone
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6 Comments
 
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Expert Comment

by:Nirmal Sharma
ID: 13769791
What exactly your problem is? How DNS Servers and Clients settings are configured? How many domain controllers you have in both the domains? How many sites? You do not need to configure Trusts between domains because trusts between windows 2000 domains are transitive and two-way.

Tell your network structure.

Let me know.
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Author Comment

by:edentone
ID: 13772558
The problem is that the logs keep referring to a replication attempt between the two DCs. The actual text is:

Event Type: Error
Event Source: NETLOGON
Event Category: None
Event ID: 5719
Date: 4/13/2005
Time: 1:40:15 AM
User: N/A
Computer: SISYPHUS
Description:
No Windows NT or Windows 2000 Domain Controller is available for domain
SERVICES. The following error occurred:
There are currently no logon servers available to service the logon request.
Data:
0000: 5e 00 00 c0 ^..À

The question is how to either get these two domains to see each other again, or how to remove the subdomain from syncing with the main domain.
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Accepted Solution

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Nirmal Sharma earned 2000 total points
ID: 13772697
First correct the DC SRVs and then i will post later for second issue.

To verify DNS registration for domain controllers using the nslookup command

1. Open Command Prompt.
2. Type:
nslookup
3. After the previous command completes, at the nslookup (">") prompt type:
set q=rr_type
4. After the previous command completes, type:
_ldap._tcp.dc._msdcs.Active_Directory_domain_name
5. Review the output of the previous SRV query and determine if further action is needed based on whether the previous query succeeded or failed:

Ref: -
http://www.microsoft.com/resources/documentation/WindowsServ/2003/standard/proddocs/en-us/sag_DNS_tro_VerifyDomainSrvLocRRs.asp

Follow any or all steps to re-register DC SRVs: -

1. Run netdiag /fix
2. Run dcdiag /fix
3. manually import DC SRVs from \windows\system32\config\netlogon.dns
4. or follow these steps: -

Please follow the steps. Everything should work fine: -

1. Stop Netlogon service.
2. Open DNS Console.
3. Delete Active Directory Integrated Zone.
4. Stop and Start DNS Service.
5. Close and Re-open DNS Console.
6. Re-create DNS Zone (domain_name)
7. Start Netlogon service.
8. issue ipconfig /registerdns.

Let me know.
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LVL 3

Author Comment

by:edentone
ID: 13808225
I will try it out tomorrow and post what happens. Thanks!
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LVL 3

Author Comment

by:edentone
ID: 13886238
Problem solved thanks to your tips.
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LVL 35

Expert Comment

by:Nirmal Sharma
ID: 13917585
Thanks!
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