Q194169: SNMP Process Object Returns the Incorrect Value

Article: Q194169
Product(s): Microsoft Windows NT
Version(s): 4.0
Operating System(s): 
Keyword(s): 
Last Modified: 10-AUG-2001

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

The Object Identifier (OID) for the Process Instance Name counter does not
return the correct value when sending an SNMP Get or Walk. Also, when walking
the process OID tree when there are multiple processes with the same name, the
SNMP walk will go into an endless loop.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT Server version 4.0.
We are researching this problem and will post new information here in the
Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Performance Monitor objects can be created by using the Perfmib utilities from
the Windows NT 4.0 Resource Kit. The following steps can be used to create a
Management Information Base (MIB), which exposes the Performance Monitor process
objects:

1. From an MS-DOS prompt, run the Perfmib.reg utility from the Windows NT 4.0
  Resource Kit. This will create the appropriate registry entries for the
  Perfmib.dll extension agent.

2. Build a Perfmib.mib and a Perfmib.ini file using the Per2mib.exe utility from
  the Windows NT 4.0 Resource Kit. For example, from an MS-DOS prompt, run the
  following command:

  perf2mib perfmib.mib perfmib.ini process 300 proc

  This creates a Perfmib.mib file and a Perfmib.ini file. These files are used
  to expose the performance monitor process instance object.

3. Stop the SNMP service by doing either of the following:

   - From an MS-DOS prompt, run the following command:

     net stop SNMP

     -or-

   - Stop SNMP by using the Services utility in Control Panel.

4. Rename the mib.bin file, found in the System32 folder, to mib.old.

5. Compile a new mib.bin file, which will include the perfmib.mib file created
  earlier in step 2, by performing the following steps:

  a. From an MS-DOS prompt, set the default folder to the Windows NT 4.0
     Resource Kit folder (for example, type: CD %ntreskit%).

  b. Run the following command:

     mibcc -n o%ntreskit%\mib.bin -t -w2 smi.mib lmmib2.mib mib_ii.mib
     perfmib.mib

6. Copy the following files from the Windows NT 4.0 Resource Kit folder
  (%ntreskit%) to the System32 folder (%SystemRoot%\System32 folder):

  Mib.bin
  Perfmib.bin
  Perfmib.ini
  Perfmib.dll

7. Start the SNMP service by doing either of the following:

   - From an MS-DOS prompt, run the following command:

     net start SNMP

     -or-

   - Start SNMP by using the Services utility in Control Panel.

After the new MIB that contains the performance monitor process instant objects
is created, it can be tested by using the Snmputil.exe utility found in the
Microsoft Windows NT 4.0 Resource Kit. To test the MIB do the following:

1. From an MS-DOS prompt, run the following command to change your default to
  the resource kit directory:

  CD %ntreskit%

2. Use the Snmputil utility to walk the process OID tree:

  Run the following command:

  snmputil walk localhost public .1.3.6.1.4.1.311.1.1.3.1.1.300.1.1

Results: If there are two processes with the same name, the utility will loop
indefinitely. As long as there are not two processes with the same name, the
utility will successfully walk the tree but it will not display the process
instance name (.1.3.6.1.4.1.311.1.1.3.1.1.300.1.2); this value will be skipped.


Additional query words:

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Keywords          :  
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : :4.0
Issue type        : kbbug
Solution Type     : kbpending

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