Re: Troubleshooting Netbios
From: Robert Neville (Robert_Neville31o_at_y@ho0.com)
Date: 10/15/04
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Date: Fri, 15 Oct 2004 00:30:29 -0700
Chuck,
Thanks for all the support and information. Yet I am still bouncing
off the walls in frustration. Browstat was a great tip; yet I have not
gotten it to work (apparently, "browstat status" does not work on my
machine). Basically, my plan now is to remove the network adapter and
reset TCP/IP. Then I plan on re-installing Windows if the situation is
not resolved.
The Ping test now returns the following results.
On the desktop,
----------------------
ping 127.0.0.1 PASS
ping localhost PASS
ping 192.168.1.100 PASS
ping Tarzan PASS
ping 192.168.1.101 PASS
ping Jane FAIL
On the laptop,
----------------------
ping 127.0.0.1 PASS
ping localhost PASS
ping 192.168.1.101 PASS
ping Jane PASS
ping 192.168.1.100 PASS
ping Tarzan FAIL
On the Laptop
'--------------------------------------------------------------------------------------------------------------------
' ipconfig /all
'--------------------------------------------------------------------------------------------------------------------
Windows IP Configuration
Host Name . . . . . . . . . . . . . . : Jane
Primary Dns Suffix . . . . . . . . . :
Node Type . . . . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . . : No
WINS Proxy Enabled. . . . . . . .: No
DNS Suffix Search List. . . . . . . :isp.isp.net ERASED
Ethernet adapter Local Area Connection 2:
Connection-specific DNS Suffix. . . . . . . : isp.isp.net
ERASED
Media State . . . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . . . . : SMC Compact USB
to Ethernet converter
Physical Address. . . . . . . . . . . : 00-xx-ERASED
Dhcp Enabled. . . . . . . . . . . . . . . : Yes
Auto-Configuration Enabled . . . . . . . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.101
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . .. : 192.168.0.1
Lease Obtained. . . . . . . . . :Friday, October 15, 2004
On 14 Oct 2004 16:18:15 -0500, Chuck <none@example.net> wrote:
>On Thu, 14 Oct 2004 13:16:28 -0700, Robert Neville <Robert_Neville31o@y@ho0.com>
>wrote:
>
>>My networking issues have not subsided. These problems have gotten
>>worse during troubleshooting process. My network idiosyncrasies began
>>after upgrading my laptop with Windows XP Corporate SP2. In summary,
>>my network uses Netbeui protocol for accessing the file shares (drive
>>shares). Both computers have drive shares with permissions. The
>>internet connection works fine.
>>
>>Now the computer cannot ping each other; only ping themselves.
>>
>>On the desktop,
>>----------------------
>>ping 127.0.0.1 PASS
>>ping localhost PASS
>>ping 192.168.1.100 PASS
>>ping Tarzan PASS
>>ping 192.168.1.101 FAIL
>>ping Jane FAIL
>>
>>On laptop,
>>----------------------
>>ping 127.0.0.1 PASS
>>ping localhost PASS
>>ping 192.168.1.101 PASS
>>ping Jane PASS
>>ping 192.168.1.100 FAIL
>>ping Tarzan FAIL
>>
>>
>>Then I ran some additional tests with Nbtstat, which I still do not
>>fully comprehend.
>>
>>On the Desktop
>>'--------------------------------------------------------------------------------------------------------------------
>>' ipconfig /all
>>'--------------------------------------------------------------------------------------------------------------------
>>
>> Windows IP Configuration
>>
>> Host Name . . . . . . . . . . . . : Tarzan
>> Primary Dns Suffix . . . . . . . :
>> Node Type . . . . . . . . . . . . : Unknown
>> IP Routing Enabled. . . . . . . : No
>> WINS Proxy Enabled. . . . .. : No
>>
>> Ethernet adapter Local Area Connection 2:
>>
>> Media State . . . . . . . . . . . : Media disconnected
>> Description . . . . . . . . . . . : 3Com 3C920B-EMB
>>Integrated Fast Ethernet Controller
>> Physical Address. . . . . . . : 00-xx-ERASED
>>
>> Ethernet adapter Local Area Connection 1:
>>
>> Connection-specific DNS Suffix . :
>> Description . . . . . . . . . . . : NVIDIA nForce MCP
>>Networking Adapter
>> Physical Address . . . . . . . . : 00-xx-ERASED
>> Dhcp Enabled.. . . . . . . . . . : No
>> IP Address. . . . . . . . . . . : 192.168.0.100
>> Subnet Mask . . .. . . . . . . . : 255.255.255.0
>> Default Gateway . . . . . . . . : 192.168.0.1
>> DNS Servers . . . . . . . . . . : 192.168.0.1
>>
>>'--------------------------------------------------------------------------------------------------------------------
>>' nbtstat -a Tarzan
>>'--------------------------------------------------------------------------------------------------------------------
>>
>>Local Area Connection 1:
>>Node IpAddress: [192.168.0.100] Scope Id: []
>>
>> NetBIOS Remote Machine Name Table
>>
>> Name Type Status
>> ---------------------------------------------
>> TARZAN <00> UNIQUE Registered
>> TARZAN <20> UNIQUE Registered
>> JUNGLE <00> GROUP Registered
>> JUNGLE <1E> GROUP Registered
>> JUNGLE <1D> UNIQUE Registered
>> ..__MSBROWSE__.<01> GROUP Registered
>>
>> MAC Address = 00-xx-ERASED
>>
>>On laptop,
>>
>>'--------------------------------------------------------------------------------------------------------------------
>>' nbtstat -A 192.168.0.101
>>'--------------------------------------------------------------------------------------------------------------------
>>Local Area Connection 1:
>>Node IpAddress: [192.168.0.101] Scope Id: []
>>
>> Host not found.
>>
>>'--------------------------------------------------------------------------------------------------------------------
>>' nbtstat -n
>>'--------------------------------------------------------------------------------------------------------------------
>>Local Area Connection 1:
>>Node IpAddress: [192.168.0.101] Scope Id: []
>>
>> No names in cache
>>
>>
>>I have several questions.
>>
>>How does one view the LMHOSTS file? What purpose does it serve in
>>simplistic terms?
>>
>>How does one reset (or renew) the Netbios? Does the process involve
>>resetting the TCP/IP protocol?
>>
>>How does one troubleshoot the Computer Browser service?
>>
>>I am beyond frustration at this point. I need some people to shed some
>>light on the situation. People's comments help me in my web search.
>>Network site contain a lot of information and I continually overlook
>>relevant points since I am quickly reading this information. The
>>process is like looking for a needle in a haystack. Let's make the
>>troubleshooting simple. Remember this may be a SP2 thing.
>
>Robert,
>
>Regarding LMHOSTS, you need to know that there are two name resolution products
>used by Windows computers - DNS and WINS.
>
>DNS is used by all computers, Mac, Windows, Unix, etc. It provides TCP/IP
>addresses for any named computer. You CAN supplement DNS (which is a server
>based procedure) with the HOSTS file on your computer.
>
>WINS is used ONLY by Windows computers. It provides TCP/IP addresses for any
>Windows computer. You CAN supplement WINS (also a server based procedure) with
>the LMHOSTS file on your computer.
>
>The HOSTS and LMHOSTS files are relevant because if they contain garbage (or
>worse yet, out-of-date information), when you ping, you could be pinging against
>invalid addresses. Or addresses for other computers.
>
>Now, if you are going to get the best advice from this forum, you should start
>by removing NetBEUI and using NetBIOS Over TCP/IP (NBT). Windows networking
>(Win 98, NT, ME, 2000, XP) all use TCP/IP for a networking protocol, and NBT as
>an interface between TCP/IP and file sharing (Client for Microsoft Networks /
>File and Printer Sharing for Microsoft Networks). NetBEUI contains duplicate
>components to TCP/IP, and complicates your network needlessly.
>
>If you look at the network components list (Local Area Connection Properties),
>you should see the following items:
>Client for Microsoft Networks
>File and Printer Sharing for Microsoft Networks
>TCP/IP
>(optional QoS Packet Scheduler)
>
>In Windows XP, you can reset TCP/IP.
>http://support.microsoft.com/?id=299357
>
>Start - Run - "cmd". Type "netsh int ip reset c:\netsh.txt" into the command
>window.
>
>There is no reset of NetBIOS Over TCP/IP, as there are no settings for NBT. But
>you can enable / disable it using TCP/IP Properties - Advanced - WINS.
>
>Make sure the browser service is running on each XP computer. Control Panel -
>Administrative Tools - Services. Verify that the Computer Browser, and the
>TCP/IP NetBIOS Helper, services both show with Status = Started.
>
>The Microsoft Browstat program will show us what browsers you have in your
>domain / workgroup, at any time.
>http://support.microsoft.com/?id=188305
>
>You can download Browstat from either:
><http://www.dynawell.com/reskit/microsoft/win2000/browstat.zip>
><http://rescomp.stanford.edu/staff/manual/rcc/tools/browstat.zip>
>
>Browstat is very small (40K), and needs no install. Just unzip the downloaded
>file, copy browstat.exe to any folder in the Path, and run it from a command
>window.
>
>For more information about the browser subsystem (very intricate), see:
>http://support.microsoft.com/?id=188001
>http://support.microsoft.com/?id=188305
><http://www.microsoft.com/technet/prodtechnol/winntas/deploy/prodspecs/ntbrowse.mspx>
>
>I share your frustration with web searches in general, and folks telling you to
>"Google It" in particular.
>
>You can view both Hosts and LMHosts, which are both text files, in folder
>"C:\WINDOWS\system32\drivers\etc".
>
>Your including IPConfig for Tarzan would be more useful if you also do the same
>for Jane. Comparing the two may help find the problem.
>
>With a connectivity ping problem (both ip address and name pings failing), the
>problem is very likely the firewall (SP2 on both Jane and Tarzan?). Make sure
>that you enabled the File and Printer Sharing exception in Windows Firewall
>Configuration (from Security Center). You should Edit the Scope of FPS to your
>Subnet too.
>
>Cheers,
>Chuck
>Paranoia comes from experience - and is not necessarily a bad thing.
- Next message: Hans-Georg Michna: "Re: Console Messages No Longer Supported?"
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- In reply to: Chuck: "Re: Troubleshooting Netbios"
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