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Nslookup Fails 2008R2 on ESXi

Posted on 2013-11-20
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Last Modified: 2013-11-24
I have one virtual 2008R2 server.  It was doing just fine.  Today DNS resolution began to fail.  All the other virtual servers, same vSwitch, vLAN, DNS servers, subnet, ESXi host, are fine.  I pull the vNIC, wipe hidden devices, reboot, add a new vNIC, don't connect it yet.  Configure the appropriate static.  Then connect it to the vSwicthc.  NSlookup works fine.  Great?  No.  Give it five minues and NSlookup begins to fail again.  Wash, rinse, repeat.

ESXi 5.0
VMware tools are installed

I appreciate the help!
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Question by:whoam
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7 Comments
 

Author Comment

by:whoam
ID: 39661916
Oh, and I can pin IP's all day long.
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Author Comment

by:whoam
ID: 39661920
IP v6 is disabled
Provider order - Tried both RD session host and MS Network at the top.
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Author Comment

by:whoam
ID: 39661926
The NIC is recognized as being on a "Domain Network"
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LVL 16

Assisted Solution

by:PaciB
PaciB earned 250 total points
ID: 39663146
Hi,

Is it possible for you to copy paste the exact response when the nslookup fails ?
By the way, what are you requesting in your NSLOOKUP ? Which name ?

Have a good day
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Accepted Solution

by:
compdigit44 earned 250 total points
ID: 39670125
Have you install any windows updates recently?
What type of vNic are you using in the VM? Have you tried using VMXNET3 or if already using it tring E1000?
Have you viewed the host and VM's log files for errors/
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Author Comment

by:whoam
ID: 39673184
All, ended up being port exhaustion on the virtual switch.  System had been upgraded since 3.0 days, only 160 ports.  Bumped to 1060 ports and all is well.

Thanks!
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Author Closing Comment

by:whoam
ID: 39673187
Solutions were just beginning to be developed when I found the error/solution.
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