DOCUMENT:Q139841 08-AUG-2001 [winnt] TITLE :SNMP Returns Corrupt MAC Address PRODUCT :Microsoft Windows NT PROD/VER:3.51 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation version 3.51 ------------------------------------------------------------------------------- SYMPTOMS ======== SNMP on Windows NT Workstation return a corrupt value when the Interface Object's MAC address is read. SNMP returns four or five bytes of the six byte address. MORE INFORMATION ================ The following command line entries will reproduce the problem. Notice that the Windows NT server returns a correct value for ifPhysAddress.2 while the two workstations return corrupt information. C:\users\default>snmputil walk public .1.3.6.1.2 Windows NT Server 3.51 Service Pack 2: Variable = interfaces.ifTable.ifEntry.ifDescr.2 Value = OCTET STRING - Intel EtherExpress PRO Adapter Variable = interfaces.ifTable.ifEntry.ifPhysAddress.2 Value = OCTET STRING - <0x0><0xaa><0x0><0xb5><0x1a><0x95> Windows NT Workstation 3.51 Service Pack 1: Variable = interfaces.ifTable.ifEntry.ifDescr.2 Value = OCTET STRING - Intel EtherExpress 16 Miniport/ Variable = interfaces.ifTable.ifEntry.ifPhysAddress.2 Value = OCTET STRING - <0x0><0xaa><0x0>7?<0xce> Windows NT Workstation 3.51 Service Pack 2: Variable = interfaces.ifTable.ifEntry.ifDescr.4 Value = OCTET STRING - Intel EtherExpress PRO Adapter Variable = interfaces.ifTable.ifEntry.ifPhysAddress.2 Value = OCTET STRING - <0x0><0xaa><0x0>`<0xd3><0xce> STATUS ====== Microsoft has confirmed this to be a problem in Windows NT Workstation version 3.51 We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. Additional query words: prodnt tcpip sp1 sp2 media access control ====================================================================== Keywords : kbnetwork Technology : kbWinNTsearch kbWinNTWsearch kbWinNT351search kbWinNTW351search kbWinNTW351 Version : 3.51 ============================================================================= 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.