netbios resolution/registration problem

I have a W2K3 file server that servers image files to other servers
booted with DOS boot disks. This server has worked fine for years but
now it will not. This is what I observe:

From the DOS clients I issue a NET USE command and depending on
whether I use the name or IP I get a different response. If I use the
name i get this error:
51: The specified computer is not recieving requests

if I use the IP I get this error:
53: Computer name specified in path cannot be located

That first message makes me think it's a netbios name issue or netbios
resolution issue so I log on the server and look around but everything
looks correct. The name LYNX is the only name for the server so there
are no other NETBIOS names configured. The netbios helper and server
services are started. The correct wins server is configured and
netbuei over TCP/IP is turned on. So the server seems correctly
configured.

I ran Wireshark on the server to sniff packets as I ran these NET USE
commands and when I use the server name it replied to the client with
an NBSS packet that said "NEGATIVE SESSION RESPONSE NO LISTENING ON
CALLED NAME." That also makes me think it's a netbios resolution
issue.

So on the server I run NBTSTAT -RR to reregister but the name never
appears in wins. Running wireshark I can see the release but I never
see it try to register. So it releases it's 00 registration and its
20 registration but it never attempts to renew those registrations.
If I do -RR On any other system I see the renews immediately after the
release.

If anybody has any suggestions on what might be causing this problem I
would appreciate the help. It's a very frustrating problem.

Thanks!

If net view receives system error 51, this is NetBIOS issue. I would check
the server service or make sure the file sharing is enabled. This search
result may help.

System ErrorsSystem error 51 has occurred - The remote computer is not
available System error 51 and 67 System error 52 - You were not connected
because a duplicate name ...
www.chicagotech.net/systemerrors.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
<(E-Mail Removed)> wrote in message
news:255d49a9-6a1e-4b9f-959a-(E-Mail Removed)...
>I have a W2K3 file server that servers image files to other servers
> booted with DOS boot disks. This server has worked fine for years but
> now it will not. This is what I observe:
>
> From the DOS clients I issue a NET USE command and depending on
> whether I use the name or IP I get a different response. If I use the
> name i get this error:
> 51: The specified computer is not recieving requests
>
> if I use the IP I get this error:
> 53: Computer name specified in path cannot be located
>
> That first message makes me think it's a netbios name issue or netbios
> resolution issue so I log on the server and look around but everything
> looks correct. The name LYNX is the only name for the server so there
> are no other NETBIOS names configured. The netbios helper and server
> services are started. The correct wins server is configured and
> netbuei over TCP/IP is turned on. So the server seems correctly
> configured.
>
> I ran Wireshark on the server to sniff packets as I ran these NET USE
> commands and when I use the server name it replied to the client with
> an NBSS packet that said "NEGATIVE SESSION RESPONSE NO LISTENING ON
> CALLED NAME." That also makes me think it's a netbios resolution
> issue.
>
> So on the server I run NBTSTAT -RR to reregister but the name never
> appears in wins. Running wireshark I can see the release but I never
> see it try to register. So it releases it's 00 registration and its
> 20 registration but it never attempts to renew those registrations.
> If I do -RR On any other system I see the renews immediately after the
> release.
>
> If anybody has any suggestions on what might be causing this problem I
> would appreciate the help. It's a very frustrating problem.
>
> Thanks!

On Apr 8, 8:59*pm, "Robert L. \(MS-MVP\)" <blinNoEmailPle...@mvps.org>
wrote:
> If net view receives system error 51, this is NetBIOS issue. I would check
> the server service or make sure the file sharing is enabled. This search
> result may *help.
>
> System ErrorsSystem error 51 has occurred - The remote computer is not
> available System error 51 and 67 System error 52 - You were not connected
> because a duplicate name ...
> * * *www.chicagotech.net/systemerrors.htm
>

The server service was on and I restarted the service as well as the
server. Absurdly, I fixed it by switching NICs but nothing else
changed and the problem went away. Now when I run NBTSTAT -a I see
all the info i would expect. I don't yet know why that worked but
indeed it did.