How to Setup Windows NT SNMP Performance Counter Agent Extension

• Microsoft Windows NT Workstation version 3.51
• Microsoft Windows NT Server version 3.51
• Microsoft Windows NT Resource Kit versions 3.51 and 4.0
• Microsoft Windows NT Server version 4.0
• Microsoft Windows NT Workstation version 4.0

SUMMARY

This article explains how to setup the Windows NT SNMP Performance Counter Agent extension provided in Windows NT Resource Kit versions 3.51 and 4.0. This agent extension makes the performance data counters available through SNMP.

MORE INFORMATION

To get the Memory, Processor, Network Segment, and PhysicalDisk Performance Monitor counters via SNMP, you can run Perfm.bat, provided in the Windows NT Resource Kit version 4.0, or use the following steps:

1. Create a PERFMIB.INI configuration file with PERF2MIB.EXE:

   - This file specifies the performance counters to expose through SNMP

        and the Object Ids (OID) to access them.
   

   - Execute the following command:

           PERF2MIB MEM.MIB %systemroot%\SYSTEM32\PERFMIB.INI Memory 300 mem
           (continued line)  Processor 302 proc
   
      - PERF2MIB creates a PERFMIB.INI file with Memory and Processor
        counters. The MEM.MIB file is also created. MEM.MIB can be used by
        SNMP management tools to get the counters OID.
   
      - The PERFMIB.INI file must reside in the same default directory as the
        SNMP.EXE process, otherwise the Perfmib DDL initialization fails.
   
   

2. For Windows NT 4.0:

       - Register Perfmib.reg in the Registry (in case you do not wish to
         create it, Perfmib.reg has been provided on the Resource Kit CD).
         This can be performed by creating the following keys with Registry
         Editor (Regedit.exe or Regedt32.exe) or by copying the following
         registry information into a file called Perfmib.reg and running
         "regini perfmib.reg" (Regini.exe is a utility in the Resource Kit).
   

   For Windows NT 3.51:

   Modify the registry settings to use this extension DLL:

         a. Run Registry Editor (REGEDT32.EXE).
   

         b. From the HKEY_LOCAL_MACHINE subtree, go to the following key:
   

               \System\CurrentControlSet\Services\SNMP
               \Parameters\ExtensionAgents
   
         c. Create a new value entry:
   
               Name:   3
               Type:   REG_SZ
               Data:   SOFTWARE\Microsoft\Perfmib\CurrentVersion
   
         d. Create a new key and new value to get the dll name:
   
               Subtree:    HKEY_LOCAL_MACHINE
               Key Name:   \Software\Microsoft\Perfmib\CurrentVersion
               Name:       Pathname
               Type:       REG_EXPAND_SZ
               Data:       %SystemRoot%\System32\perfmib.dll
   
            NOTE: Copy this Perfmib.dll from the Resource Kit to the system
            directory.
   
   

3. Start the SNMP service.

4. Add Perfmib.mib to your management station using the method provided by the manufacturer of your management station.

5. Collect performance counters. For example to get the memory counters information with snmputil tool, issue the following command:

   SNMPUTIL walk agent public<space>.iso.org.dod.internet.private (continued line) .enterprises.microsoft.software.1.3.1.1.300.

   where <space> is a blank space (press spacebar).