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Last Updated December 16, 2003

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Simple Network Management Protocol (SNMP)

Simple network management protocol (SNMP) provides the ability to remotely troubleshoot and monitor hubs, routers, and other devices without having to be physically present at the device itself. Windows NT and Windows 2000 do not come with an SNMP management console, so a third-party console may be necessary for SNMP to be useful. Microsoft does provide two useful resource kit utilities, SNMPUtil (which is a command-line SNMP query utility), and SNMPMon (which is a command-line utility that can query and log SNMP counters over time and can be configured with a text file.)

Where to Start....
Getting Started with the SNMP Service 
Sample Chapter 5 from Windows NT SNMP, published by O'Reilly & Associates, Inc describes how to install, uninstall, configure, and test the Microsoft Windows SNMP service, and how the SNMP service works with the Win32 and SNMP APIs. Source: Microsoft TechNet

Implementing the Microsoft SNMP Service
Sample Chapter 10 from MCSE Training Guide: TCP/IP, Second Edition, published by New Riders Publishing. Describes how to install and configure the SNMP Service. Source: Microsoft TechNet

Microsoft SNMP Services 
Sample Chapter 12 from MCSE: TCP/IP for NT Server 4 Study Guide, published by Sybex, Inc Explains the purpose of SNMP and the different operations performed by an SNMP agent and an SNMP manager; defines Management Information Base (MIB); and shows you how to install and configure the Microsoft SNMP service. Source: Microsoft TechNet

Network Management and Monitoring 
Sample Chapter 5 from Windows NT, Heterogeneous Networking, published by MacMillan Technical Publishing. What you need to know to manage and monitor your network: utilities and tools you need, plus a discussion of the SNMP manageable agent included with WindowsNT

Network Management for Microsoft Networks Using SNMP 
Sample Chapter 11 from Windows NT : TCP/IP, published by New Riders Publishing. The documentation currently available from Microsoft on implementing TCP/IP in a Windows environment is largely insufficient, as are the available third-party materials. This leaves a large information deficit for the readers to fill in for themselves, especially at the high-end of the market. Source: Microsoft TechNet

SNMP Boy - Monitoring Windows 2000 with SNMP
An internal Microsoft web page maintained by Otto Helweg which demonstrates the ability of SNMP and MRTG to monitor Windows 2000.

The Simple Web
Provides links and information on network management, including software, RFCs and tutorials. The focus is on SNMP and Internet management, but people interested in other management technologies will also find interesting information

Translating SNMP Traps 
Translating SNMP Traps You can use Systems Management Server (SMS) to translate Windows NT events into Simple Network Management Protocol (SNMP) traps. SNMP is the network management protocol of TCP/IP, which you can use to monitor the activity of various Windows NT resources on your network. Source: Microsoft TechNet

Understanding SNMP
Uses and goals of Simple Network Management Protocol (SNMP). Source: Windows & .NET Magazine (May 1997)

Useful Articles
Description of the Mrinfo.exe Tool for Command-Line Access to Multicast Routing
Microsoft Knowledge Base Article: 225158 - Mrinfo.exe is the only multicast command-line tool included with Windows 2000. You can use this tool to query a multicast router for information about its interfaces and neighbors.

Keeping SNMP's Secrets Safe
A useful network service can also prove useful to attackers. Source: Network Magazine (April 1999)

Microsoft SNMP Traps and SQL Server 7.0
Microsoft Knowledge Base Article: 245166 - The extended stored procedures xp_snmp_raisetrap and xp_snmp_getstate used to raise Simple Network Management Protocol (SNMP) traps in previous SQL Server versions are no longer available in SQL Server 7.0 

WMI Returns a Generic Event Instead of a Specific Trap
Microsoft Knowledge Base Article: 255161 - Windows Management Instrumentation (WMI) may return a generic Simple Network Management Protocol (SNMP) event instead of a specific event. 

How to Articles
HOW TO: Configure Network Security for the SNMP Service 
Microsoft Knowledge Base Article: 313381 - This step-by-step article describes how to configure network security for the Simple Network Protocol Service  (SNMP).

HOW TO: Configure Security for a Simple Network Management Protocol Service 
Microsoft Knowledge Base Article: 315154 - This step-by-step article describes how to configure traps on a Simple Network Management Protocol (SNMP) service. You can configure the SNMP service to send a trap when it receives a request for information that does not contain the correct community name and does not match an accepted host name for the service. 

How to Troubleshoot SNMP Security Issues
Microsoft Knowledge Base Article: 200885 - If Simple Network Management Protocol (SNMP) is not responding and you have implemented SNMP security, you can use the steps in this article to help you troubleshoot the issue.

How to Use the Snmputil.exe Tool to Verify the Microsoft SNMP Agent Configuration
Microsoft Knowledge Base Article: 232663 - You can use the Snmputil.exe tool in the Microsoft Windows NT Resource Kit to verify that the SNMP service has been correctly configured to communicate with SNMP management stations.

Troubleshooting Articles
Network Load Balancing Cluster no Longer Responds to Simple Network Management Protocol Requests
Microsoft Knowledge Base Article: 280307 - Under the following conditions, when all hosts in an Network Load Balancing (NLB) cluster are stopped and then started again, the cluster no longer responds to Simple Network Management Protocol (SNMP) requests: 

SNMP Service Will Not Start with Event ID: 7024
Microsoft Knowledge Base Article: 158770 - The SNMP service fails to start and displays the following message: EVENT ID: 7024 Description: The SNMP Service terminated with service specific error 3 

SNMP Status for Printers Is Not Displayed with SPM Printing
Microsoft Knowledge Base Article: 198176 - After you create a local printer by using the Transmission Control Protocol/Internet Protocol (TCP/IP) Standard Port Monitor (SPM) on your Windows 2000-based server running Microsoft Internet Information Server (IIS), when you try to view this printer's properties by using your Web browser program, the detailed device status is unavailable on the Web page for that printer. Note that this may occur even though the SNMP Status is enabled for the port. 

SNMP Storage Information Is Not Updated Dynamically 
Microsoft Knowledge Base Article: 295587 - When you use Simple Network Management Protocol (SNMP - to query the free space on a disk, the values are not updated unless you stop and restart the SNMP service. 

Snmptrap.exe Ignores Trap Messages That Are Larger Than 8192 Bytes
Microsoft Knowledge Base Article: 301945 - The Snmptrap.exe tool is a client process that receives SNMP trap messages. When a trap message is larger than 8 kilobytes (KB), Snmptrap.exe may not process the message correctly. 

SNMP Traps Not Properly Received by Windows 2000
Microsoft Knowledge Base Article: 253302 - A program that is running in Windows 2000 that uses the SnmpMgrGetTrapEx function to receive Simple Network Management Protocol (SNMP) traps may not appear to be receiving them 

Tcpmon Deadlocks in Windows 2000 If SNMP Printers Do Not Respond
Microsoft Knowledge Base Article: 260948 - If there are many Simple Network Management Protocol (SNMP) printers on a cluster using the standard TCP/IP port monitor and one or two printers enter a state in which the SNMP agent does not respond, the cluster does not fail over. 

Windows 2000 SNMP Registry Entries Are Saved in Plain Text Format and Are Readable
Microsoft Knowledge Base Article: 266794 - Microsoft has released a tool that corrects the permissions on the SNMP Parameters registry values in Microsoft 2000. The default permissions could allow a malicious user to gain additional privileges on an affected machine. 

WMI Returns a Generic Event Instead of a Specific Trap
Microsoft Knowledge Base Article: 255161 - Windows Management Instrumentation (WMI - may return a generic Simple Network Management Protocol (SNMP - event instead of a specific event.) 


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