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Q12 An established wireless LAN connection is disconnected after 2~3 minutes,
and the connection is not recovered.
A1
This may be caused by channel interference. Change the channel of the AP, and
reconnect.
A2
This may be caused by selecting the 'Use IEEE 802.1x network authentication'
option when IEEE 802.1x authentication is not available.
Check the properties of the AP in the wireless network settings. If the 'Use IEEE
802.1x authentication in this network' option is selected, deselect the option on
the Authentication tab.
For more detailed information about authentication server, ask your network
administrator.
A3
If the AP is configured to 'Use network authentication (Shared Key)'
If the AP is configured to authentication shared mode, all computers to be
connected should be configured as follows:
- If you are using Windows XP, select network authentication(shared mode) in
the wireless network settings.
Click Start > Control Panel > Network and Internet Connections > Network
Connections. Right-click the Wireless Network Connection icon, and click View
Available Wireless Networks > Advanced. In the Wireless Networks tab, select
an AP in the Available Networks field and click Configure and select 'Network
Authentication (Shared Mode).
- If you are using Windows 2000, check that the network authentication mode is
configured to Share in the security settings of the wireless LAN program
(PROSet).
For more network authentication procedures, ask your AP (Access Point)
administrator.
A4
For a model with an installed 2100 11b card, check the wireless LAN driver
version installed on your computer. (Click Start > Control Panel > System >
Hardware tab > Device Manager. Under Network adapters, right-click PRO/
Wireless LAN 2100 3B Mini PCI Adapter item and click Properties > Driver tab
then check the driver version.)
When a driver of version 1.1.5.0 or lower is installed, remove the security patch
(Q815485) if it is installed.
The WPA Q815485 patch provided by Microsoft can be used only when there is
802.11x, RADIUS, or an authentication server as well as an AP and a driver that
Troubleshooting 97
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