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Q137968: Perfmon and Network Monitor Counters Show Incorrect Values

Article: Q137968
Product(s): Microsoft Systems Management Server
Version(s): winnt:1.0,1.1,3.5,3.51
Operating System(s): 
Keyword(s): kb3rdparty kbnetwork
Last Modified: 18-JUL-2002

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The information in this article applies to:

- Microsoft Systems Management Server versions 1.0, 1.1 
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SYMPTOMS
========

Under heavy stress situations, Windows NT computers running Network Monitor or
Performance Monitor on a Token Ring 16Mb network with a NetFlx Eth/TR II network
interface card (NIC) return zero for the following performance counters:

Perfmon Network Segment Object:

  % Broadcast frames
  % Multicast Frames
  % Network utilization
  Broadcast frames received/second
  Multicast frames received/second
  Total bytes received/second

Network General

  % Broadcast frames
  % Multicast Frames
  % Network utilization
  Broadcast frames received/second
  Multicast frames received/second
  Total bytes received/second

This typically occurs when network utilization is continuously greater than 70-80
percent.

NOTE: The Performance counters do appear after a short period of time to recover
as the values start to again increment but they never fully recover in that the
values appear extremely low.

CAUSE
=====

The NetFlex II NIC stops responding (hangs) and the counters are reset to 0.


RESOLUTION
==========

This problem has been corrected in the latest Service Pack for Windows NT
version 3.51. Windows NT now polls the NIC every 2 seconds to check for a hung
condition. If hung, it is reset, but not into promiscuous mode. This problem
does not happen when the NIC is running in normal mode.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT version 3.51. This
problem was corrected in the latest Windows NT 3.51 U.S. Service Pack. For
information on obtaining the Service Pack, query on the following word in the
Microsoft Knowledge Base (without the spaces):

  S E R V P A C K

Additional query words: netmon prodnt prodsms NetFlex II Perfmon

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Keywords          : kb3rdparty kbnetwork 
Technology        : kbSMSSearch kbSMS100 kbSMS110
Version           : winnt:1.0,1.1,3.5,3.51

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