Microsoft KB Archive/170818

= El59x Driver Shows Only Inbound Traffic with Network Monitor =

Article ID: 170818

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT 4.0 Service Pack 3

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This article was previously published under Q170818



SYMPTOMS
When you are using Network Monitor with a 3Com 3C59X adapter, Network Monitor may capture only the data sent to the computer using the adapter. Data sent from the computer is never displayed in Network Monitor. This occurs with the El59x.sys network card driver that ships with Windows NT version 4.0 and with Windows NT version 4.0 Service Pack 3.



RESOLUTION
Perform the following steps to resolve this problem:
 * 1) Obtain the latest version of El59x.sys from 3Com.
 * 2) Copy the new version of this driver over the previous version in the \%SystemRoot%\System32\Drivers folder.
 * 3) Restart your computer.

Please contact 3Com for additional information.



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.0 and Windows NT version 4.0 Service Pack 3. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: 3Com netmon

Keywords: kbbug kbhardware kbnetwork kbhw kb3rdparty KB170818

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