[itdiscuss] DNS Problems

[Kevin Brunson]

Typically it is a good idea to have each DC point to itself for primary DNS by the loopback address 127.0.0.1.  If you have more than one DC, put another DC as the secondary DNS.

In DHCP, go to Properties of the DHCP server.  On the DNS tab, make sure "Dynamically update DNS A and PTR records for DHCP clients that do not request updates" and I would also suggest checking "Always dynamically update DNS and PTR records".  On the Advanced tab, click Credentials and make sure there is an account in there.  Otherwise dynamic DNS updating won't work.

Kevin Brunson
Senior Systems Engineer
Higher Ground Technologies
901-333-7777

From: discuss-bounces at itdiscuss.org [mailto:discuss-bounces at itdiscuss.org] On Behalf Of blloyd at buskercom.com
Sent: Tuesday, February 17, 2009 8:12 AM
To: discuss at itdiscuss.org
Subject: Re: [itdiscuss] DNS Problems

Would you use the actual IP of the server or the loop-back address?



Bill Lloyd
IT Manager
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2567 Athens Hwy.
Gainesville, GA 30507
Phone: 770-417-1604
Fax:     770-417-1747
Cell:     404-379-6963

blloyd at buskercom.com
This email and any accompanying attachments may contain confidential and proprietary information. If you are not the intended recipient, you are requested to delete this entire communication immediately. Emails cannot be guaranteed to be secure or free of errors or viruses. The sender does not accept any liability or responsibility for any problems that may result from emails you receive.
From: discuss-bounces at itdiscuss.org [mailto:discuss-bounces at itdiscuss.org] On Behalf Of Jason Hand
Sent: Tuesday, February 17, 2009 8:23 AM
To: 'IT Discussion Forum'
Subject: Re: [itdiscuss] DNS Problems

DHCP should be reporting the assigned IP addresses to the DNS server.  First thing I would check is DNS event log for errors.  Next make sure that you don't have any misconfiguration of your DNS.  DC's should always point to themselves first for primary dns on NIC card.  Check also to make sure that you do not have any orphaned DC's or DNS servers listed in AD.  You can check that by looking in your DNS configuration and see if there are any servers listed as DC's that shouldn't be. If you go to AD Sites and Services, what servers are listed as replicating with each other?  When you try to have it replicate there, does it pass?

Most of the time it is a simple NIC configuration issue.  Either the workstations do not point to the DC's or the DC's are not configured properly so that they can first make sure they are kept up to date and then replicating those changes to other DC's.

-Jason

________________________________
From: discuss-bounces at itdiscuss.org [mailto:discuss-bounces at itdiscuss.org] On Behalf Of blloyd at buskercom.com
Sent: Tuesday, February 17, 2009 8:10 AM
To: discuss at itdiscuss.org
Subject: [itdiscuss] DNS Problems
I'm having DNS problems on my network.  Normally DDNS should kick in to keep my DNS server up to date with the IPs of my DHCP clients.  However, my DNS servers are not staying up to date with the information for these clients.  Does anyone have an idea on how to trouble-shoot this problem?

Thanks,



Bill Lloyd
IT Manager
[cid:image001.jpg at 01C990DD.DE2E53C0]

2567 Athens Hwy.
Gainesville, GA 30507
Phone: 770-417-1604
Fax:     770-417-1747
Cell:     404-379-6963

blloyd at buskercom.com
This email and any accompanying attachments may contain confidential and proprietary information. If you are not the intended recipient, you are requested to delete this entire communication immediately. Emails cannot be guaranteed to be secure or free of errors or viruses. The sender does not accept any liability or responsibility for any problems that may result from emails you receive.

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