NBNS Name query failure - Why?

  • Thread starter Thread starter Danckel
  • Start date Start date
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Danckel

Hi,
I have the following local network problem. I got two computers
connected by an Internet/Router which acts as the DHCP Server and is
called "fritz.box" with fixed IP 192.168.178.1. Both computers run
Windows XP. Computer 1 is called "Inspiron" and gets the IP
192.168.178.20. Compuer 2 gets the IP 192.168.178.21. Until recently
everything worked fine, but now the two computers are unable to
connect (network-browsing).

I observed the following:
ping www.yahoo.com: works fine
ping fritz.box: works fine (fritz.box is the router)
ping inspiron: does not work (inspiron has IP: 192.168.178.20 )
ping 192.168.178.20: works!!!!
nslookup inspiron: works!!???!!! Returns the right IP:
192.168.178.20 .
net view inspiron: does not work (system error 53)
net view 192.168.178.20: works!!!!

Wireshark reports the following network packages exchange following
the command "ping inspiron":

192.168.178.21 192.168.178.1 NBNS Name query NB INSPIRON<00>
192.168.178.1 192.168.178.21 ICMP Destination unreachable (Port
unreachable)

same kind of response about my network "MSHOME"
192.168.178.21 192.168.178.1 NBNS Refresh NB MSHOME<1e>
192.168.178.1 192.168.178.21 ICMP Destination unreachable (Port
unreachable)

"ping fritz.box" returns
192.168.178.21 192.168.178.1 DNS Standard query A fritz.box
192.168.178.1 192.168.178.21 DNS Standard query response A
192.168.178.1
with the subsequent Echo ICMPs

I turned off any firewall.

My question is: which device is at fault and how can I repair it? I
have no idea and would be grateful for any advice

danckel
 
Found the solution and I think it interesting enough to report it
here:

Cause of the problem: Node type is setup Peer-Peer (reported by
ipconfig /all)

Solution: go to Start | Run | regedit.
Go to:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netbt\Parameters

If either of the following values are present, delete them:

NodeType;
DhcpNodeType.
Then re-boot.

Answer found at http://www.chicagotech.net/Networking/nodetypeissue1.htm

I have no idea how the registry entry entered into my system. Would
love to know how and why. Anyway, perhaps it will help some other
victim.

best,
Danckel
 
Thank you for the feedback. We have found some software may change the node type.

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
Found the solution and I think it interesting enough to report it
here:

Cause of the problem: Node type is setup Peer-Peer (reported by
ipconfig /all)

Solution: go to Start | Run | regedit.
Go to:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netbt\Parameters

If either of the following values are present, delete them:

NodeType;
DhcpNodeType.
Then re-boot.

Answer found at http://www.chicagotech.net/Networking/nodetypeissue1.htm

I have no idea how the registry entry entered into my system. Would
love to know how and why. Anyway, perhaps it will help some other
victim.

best,
Danckel
 
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