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Name Resolution after re-subnetting

Posted on 2016-08-25
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Last Modified: 2016-08-26
Comcast replaced their router last week and for some reason the could not set the LAN IP Address to where the old one was (192.168.0.2) so I had to re-subnet the network around the router (got to love Comcast). The network isn't that big so I didn't think it would take that long but I am running it to name resolution issues. One user complained her scanning was slow and referring to the server by IP brought the speed back so something is going on with name resolution.

It is a 2012 R2. The server is the DNS and points to itself. Here are some symptoms:

1) When I open up a command prompt on the server and ping itself (ping Server) what I get back are 4 "Reply from ::1: time<1ms"
2) In the forward lookup zone I have two NS Records of servers long past. How do you delete those?

I missed changing something from the old IP to the new. Any ideas?
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Question by:LockDown32
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4 Comments
 
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Accepted Solution

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Stephen McTigue earned 2000 total points
ID: 41770827
Have you tried the following option within DNS:

1. Scavenge Stale Resource Records
2. Update Server Data Files
3. Clear Cache

See screenshot attached showing the location within DNS.

I hope this is helpful.
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Expert Comment

by:Stephen McTigue
ID: 41770830
Here's the screenshot
MS_DNS_options.PNG
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LVL 15

Author Comment

by:LockDown32
ID: 41770837
No screen shot attached but I knew where the options were. Will let you know if it worked.
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LVL 15

Author Comment

by:LockDown32
ID: 41771904
It wasn't name resolution. It was indexing. Caused everything to run slow. Thanks for the input.
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