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Chapter 9
Routine Procedures
ACM Procedures
Refer to
Restarting the Client Adapter
ACU enables you to reinitialize (or restart) the client adapter without having to reboot your computer or
eject and reinsert the adapter. For instance, if your client adapter is experiencing poor throughput, you
might want to restart the client adapter to try to force it to disassociate from the access point to which it
is currently associated in the hope that it reassociates to an access point with a stronger signal.
Note
Restarting the client adapter may cause you to lose your wireless network connection.
Follow the steps below to restart the client adapter.
Step 1
Open ACU.
Step 2
Select the Restart Card option from the Commands drop-down menu (see
Step 3
When prompted to confirm your decision, click Yes. The driver stops the client adapter's radio, writes
the configuration (although no parameter settings have been changed), and restarts the radio. The status
bar at the bottom of the ACU screen shows the client adapter losing association and then reassociating.
Turning Your Client Adapter's Radio On or Off
Your client adapter's radio can be turned on or off. Turning the radio off prevents the adapter from
transmitting RF energy. You might want to turn off the client adapter's radio in the following situations:
•
•
•
When the radio is on, it periodically sends out probes even if it is not associated to an access point, as
required by the 802.11 specification. Therefore, it is important to turn it off around devices that are
susceptible to RF interference.
Note
Your client adapter is not associated while its radio is off.
If your client adapter's radio is turned off before your computer enters standby or hibernate mode or
Note
before you reboot the computer, the radio remains off when the computer resumes. You must turn the
radio back on to resume operation.
Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows
OL-1394-07
Chapter 8
for instructions on using ACM.
You are not transmitting data and want to conserve battery power.
You have EAP-SIM authentication set up to occur transparently (the SIM card is left in the reader
and the PIN is stored in the computer), and you do not want to be billed for air time upon entering
an area that enables the client to authenticate.
You are using a laptop on an airplane and want to prevent the adapter's transmissions from
potentially interfering with the operation of certain devices.
Restarting the Client Adapter
Figure
9-6).
9-15
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Table of Contents
Troubleshooting
