KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q139841: SNMP Returns Corrupt MAC Address

Article: Q139841
Product(s): Microsoft Windows NT
Version(s): 3.51
Operating System(s): 
Keyword(s): kbnetwork
Last Modified: 08-AUG-2001

-------------------------------------------------------------------------------
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 <computernmae> 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 1986-2002.