Solved

DNS reverting back to non-existent servers

Posted on 2014-10-01
3
223 Views
Last Modified: 2014-10-21
We recently changed IP addresses at a site. When user logs in or when I do an ipconfig /release /renew they get the correct DNS settings from DHCP but after a few minutes it reverts to the old DNS servers addresses. The IP address doesn't change on the workstation or gateway just the DNS. We inherited this network so suggestions on where I can look for old DNS records would be appreciated. We have a Cisco Catalyst 4948 Core switch and this is trunked to HP Procurve 2610 switch. Using Widows 2012 server for DHCP.
0
Comment
Question by:SargentControls
3 Comments
 
LVL 32

Expert Comment

by:it_saige
ID: 40355805
Starting at the client, have you checked the NIC Properties for TCP/IP Version 4?

Have you checked the hosts file (although, I don't actually believe that changes the DNS settings)?

Try adding ipconfig /flushdns and ipconfig /registerdns to your command tree; i.e. - ipconfig /release && ipconfig /flushdns && ipconifg /renew && ipconfig /registerdns

You can also run:

netsh interface ipv4 show config

To see if anything looks out of place.

-saige-
0
 
LVL 23

Assisted Solution

by:Dr. Klahn
Dr. Klahn earned 250 total points
ID: 40355995
Look at the Group Policy for both Computer / Administrative / Network.  Under DNS you'll find several options that allow locking down DNS servers.  All of them should be set "not enabled."
0
 
LVL 5

Accepted Solution

by:
Daniel Kline earned 250 total points
ID: 40356108
In addition to the suggestions above, make sure you remove the old subnets from the Sites in AD.
0

Featured Post

How to improve team productivity

Quip adds documents, spreadsheets, and tasklists to your Slack experience
- Elevate ideas to Quip docs
- Share Quip docs in Slack
- Get notified of changes to your docs
- Available on iOS/Android/Desktop/Web
- Online/Offline

Join & Write a Comment

Even if you have implemented a Mobile Device Management solution company wide, it is a good idea to make sure you are taking into account all of the major risks to your electronic protected health information (ePHI).
If your business is like most, chances are you still need to maintain a fax infrastructure for your staff. It’s hard to believe that a communication technology that was thriving in the mid-80s could still be an essential part of your team’s modern I…
The viewer will learn how to successfully create a multiboot device using the SARDU utility on Windows 7. Start the SARDU utility: Change the image directory to wherever you store your ISOs, this will prevent you from having 2 copies of an ISO wit…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

759 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now