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Duplicate nameon network error after switching to new file server

I recently moved our 2 file share server from Win2k3 to Win2k8.  I built up the 2k8 boxes, robocopied all the files from the old servers to new servers, changed the name of the old servers, removed them from the domain, renamed the 2 new servers to the exact same name as the old servers, and updated dns.  Everything is working fine across the board, no user complaints, etc.  However, I am getting an error message in the event log.

"A duplicate name has been detected on the TCP network.  The IP address of the computer that sent the message is in the data. Use nbtstat -n in a command window to see which name is in the Conflict state."

Also, I am having a hard time installing the Backup Exec agent on either server which may or may not be related.  "Attempt to connect to server \\server failed with the following error:  Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed.  Disconnect all previous connections to the server or shared resource and try again.

Any idea what would be causing this?
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rufustmac
Asked:
rufustmac
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2 Solutions
 
NJComputerNetworksCommented:
Use nbtstat -n in a command window to see which name is in the Conflict state
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NJComputerNetworksCommented:
Some other users with a similar event error:  http://www.eventid.net/display.asp?eventid=4319&eventno=554&source=NetBT&phase=1


Maybe one of these will apply to your situation.
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rufustmacAuthor Commented:
This is what I get when I nbtstat -n.

Local Area Connection:
Node IpAddress: [156.42.1.11] Scope Id: []

                NetBIOS Local Name Table

       Name               Type         Status
    ---------------------------------------------
    FILE01  <00>  UNIQUE      Registered
    A            <00>  GROUP       Registered
    FILE01  <20>  UNIQUE      Registered

Local Area Connection 2:
Node IpAddress: [156.42.1.12] Scope Id: []

                NetBIOS Local Name Table

       Name               Type         Status
    ---------------------------------------------
    FILE01  <00>  UNIQUE      Registered
    A            <00>  GROUP       Registered
    FILE01  <20>  UNIQUE      Registered
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rufustmacAuthor Commented:
I just figure it out.  I am stupid.  The 2nd NIC is supposed to be on a different subnet and I miss typed the IP when configured it.  After changing that it is fine.
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NJComputerNetworksCommented:
Yes, the conflict can be clearly seen in the NBTSTAT - n output...
nbtstat.png
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ChiefITCommented:
Good answer NJComputerNetworks:

I think it best to take this one one step further and find out why mulithoming the DC is a good idea in this case.

You know that mulithoming a DC is problematic, at best.
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ChiefITCommented:
I recommend full credit to NJcomputers split between two answers. One diagnosed the problem. The other indicated the fix:

NJComputers: ID: 26106827
And
NJComputers: ID: 26111878
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rufustmacAuthor Commented:
I apologize, I didn't even click on the link provided by NJComputers as I had already resolved the problem so I didn't think to check his solutions before awarding points.  I have no issue with awarding full points Administrator.  Once again, my misktake.
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