This article was previously published under Q170950
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Network connectivity to a computer using the Compaq NetFlex-3 network cardis intermittently lost and then restored every few minutes without havingto restart the system.
Depending on the application, the client or application may have to berestarted to restore the connection. If the application has open files onthe server, data may be lost.
Some applications report the lost connections. Others applications may seemto stop responding (hang) for several minutes before continuing.
On a Compaq computer running Windows NT Server version 4.0 Service Pack 3(SP3) and has a Compaq NetFlex3 network adapter and Compaq Support Software Disk (SSD) version 2.04 installed, Event Viewer may record the following events:
Event ID: 4105 Source: CpqNF31 Description: Network link is down. Please check your cabling. See documentation for more information or contact your service provider.
Event ID: 4106 Source: CpqNF31 Description: Network link has been restored.
The NetFlex-3 10/100 network PCI card is set to 100 MB/full duplex. TheNetFlex-3 driver provided with Windows NT 4.0 does not support full duplexmode at 100 MB.
To work around this problem, do one of the following:
Obtain the updated driver for the NetFlex-3 PCI card in Softpack SP3206 from Compaq.
For Windows NT 3.51 systems, get Compaq Softpack SP3302 (SSD 1.23A and NetFlex 3 driver version 3.06) from the following location:Set the NetFlex-3 card to half duplex.
For Windows NT 3.51 systems, get Compaq Softpack SP3302 (SSD 1.23A and NetFlex 3 driver version 3.06) from the following location:Set the NetFlex-3 card to 10 MB.
Microsoft has confirmed this to be a problem in Windows NT version 4.0. Weare researching this problem and will post new information here in theMicrosoft Knowledge Base as it becomes available.