Microsoft KB Archive/247609

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Article ID: 247609

Article Last Modified on 11/1/2006


  • Microsoft Windows 2000 Server

This article was previously published under Q247609


When you manually select the speed and duplex mode on a Cisco Systems Catalyst 2948G multi-layer local area network (LAN) switch, you may experience slow network performance with a Microsoft Windows 2000-based computer.


To resolve this issue, if you manually set the switch to a certain speed or duplex mode, manually configure the network adapter to use the same settings.


This behavior is by design.


When you manually set the Catalyst 2948G to 10 Full, 10 Half, 100 Full, or 100 Half, you automatically disable NWAY autodetection of duplex mode. When the network adapter is set to Auto speed/Auto Duplex, the network adapter cannot detect the duplex mode of the switch, and therefore defaults to 10 Half duplex.

Additional query words: cisco speed duplex

Keywords: kbprb KB247609