SNMP OID for Logical Disk instance Name Returns Wrong Value

• Microsoft Windows NT Server version 4.0

SYMPTOMS

The object ID, or OID, for the logical disk instance name does not return the correct value when issuing an SNMP get or walk command.

STATUS

Microsoft has confirmed this to be a problem in Windows NT Server version 4.0.

MORE INFORMATION

Performance Monitor objects can be created by using the PERFMIB utilities from the Windows NT 4.0 resource kit. Perform the following steps to create a Management Information Base (MIB), which exposes the performance monitor logical disk objects:

1. From an MS-DOS command prompt, run the Perfmib.reg utility from the Windows NT 4.0 resource kit. This creates 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 command prompt, run the following command:

   perf2mib perfmib.mib perfmib.ini LogicalDisk 250 disk

   This creates a Perfmib.mib file and a Perfmib.ini file. These files are used to expose the Performance Monitor logical disk objects.



3. From an MS-DOS command prompt, stop the SNMP service by performing one of the following:
   
   
   1. Run the following command:

      net stop SNMP

   
   
   or
   
   
   2. Click Start, point to Settings, click Control Panel, and then double-click Services. Select the SNMP service from the list and then click Stop.
   
   
   



4. Rename the mib file to Mib.old. This file is found in the System32 folder.



5. Compile a new Mib.bin file, which includes the Perfmib.mib file created earlier in step 2. To do this:
   1. From an MS-DOS command prompt, set the default directory to the Windows NT resource kit folder. For example: CD %ntreskit%
   
   
   
   2. 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 resource kit folder (%ntreskit%) to the System32 folder (%SystemRoot%\System32):
   • Mib.bin
   
   
   
   • Perfmib.bin
   
   
   
   • Perfmib.ini
   
   
   
   • Perfmib.dll
   
   
   



7. From an MS-DOS command prompt, start the SNMP service. To do this, perform one of the following:
   1. Run the following command from an MS-DOS command prompt:

      net start SNMP

   
   
   or
   
   
   2. Click the Start button, point to Settings, click Control Panel, and then double-click Services. Select SNMP from the list, and then click Start.
   
   
   

1. From an MS-DOS command prompt, run the command CD %ntreskit%, to change your default to the resource kit folder.



2. Use the SNMPUTIL utility to walk the logical disk OID tree. To do this, run the following command at an MS-DOS command prompt:

   snmputil walk localhost public .1.3.6.1.4.1311.1.1.3.1.1.250.1.1

   
   
   Results: This will successfully walk the tree, but it does not display the logical disk instance name - .1.3.6.1.4.1.311.1.1.3.1.1.250.1.2 - this value is skipped.

REFERENCES

For more information, please see the following Microsoft Knowledge Base article:

Q139488 How to Set Up Windows NT SNMP Performance Counter Agent Extension

Additional query words:

Keywords :
Version : winnt:4.0
Platform : winnt
Issue type : kbbug