DOCUMENT:Q124431 08-AUG-2001 [winnt] TITLE :SNMP Traps Sent to Wrong Port PRODUCT :Microsoft Windows NT PROD/VER:3.50 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation version 3.5 - Microsoft Windows NT Server version 3.5 ------------------------------------------------------------------------------- SYMPTOMS ======== If you install Windows NT 3.5 over Windows NT 3.1, SNMP traps are not received by your network agent. If you have access to a network monitor or sniffer, you can see the traps being sent to the wrong port. CAUSE ===== Under Windows NT 3.1, builds 511 and 528, the entry in the SERVICES file for SNMP-TRAP was set (incorrectly) to port 167. The SERVICES file under Windows NT 3.5 has the entry for SNMP-TRAP correctly set to port 162. The SERVICES file is copied only if the file does not already exist when you upgrade to Windows NT 3.5. Since it exists from the Windows NT 3.1 installation, the new SERVICES file with the corrected port number is not copied. This was not a problem under Windows NT 3.1 is because SNMP did not look in the SERVICES file to determine which port to use. The SNMP that ships with Windows 3.5 does look in the SERVICES file to determine which port to use for sending SNMP traps. RESOLUTION ========== Edit the SERVICES file in the %SYSTEMROOT%\SYSTEM32\DRIVERS\ETC directory and change the SNMP-TRAP entry from snmp-trap 167/udp snmp to: snmp-trap 162/udp snmp STATUS ====== Microsoft has confirmed this to be a problem in Windows NT version 3.5. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. Additional query words: prodnt blue screen ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNTWsearch kbWinNT350search kbWinNTW350 kbWinNTW350search kbWinNTSsearch kbWinNTS350 kbWinNTS350search Version : 3.50 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.