AP Radio Scan

Chapter 1 FAQs and Troubleshooting

Sites FAQs and Troubleshooting

Q.In the Constraints and Goals step in the Assisted Site Survey Wizard, how do I select multiple channels in the channel list?

A.For Windows users, control-click on the channels to add them to the selection. The selected channels are highlighted.

Q.How long should the Constraints and Goals calculation step take in the Assisted Site Survey Wizard?

A.It varies depending on the amount of radio scan and client walkabout data. The more data you have, the longer it will take to calculate.

Q.Where can I see the result of the Constraints and Goals calculation in the Assisted Site Survey Wizard?

A.If the calculation was successful, you can click Next to view the result.

Q.If I don't like result of the Constraints and Goals calculation in the Assisted Site Survey Wizard, what can I do?

A.Go back and specify different constraints and goals, and then recalculate the constraints and goals.

Q.When I apply the configuration in the Assisted Site Survey Wizard, where do I see the results?

A.Check Location Manager to view the configuration changes. You might need to refresh the Location Manager window by selecting View > Refresh Data. In rare cases, the wizard might have failed to apply the configuration. In that case, check your SNMP settings, particularly the WRITE community string, for the devices.

Q.In the last step of the Assisted Site Survey Wizard, why is the Next button disabled?

A.This is the last step in Assisted Site Survey Wizard. You can close the Wizard unless you want to repeat any previous steps.

Q.How does AP Radio Scan affect an access point’s performance?

A.With all the APs configured to the same channel and at maximum power, there is some degradation in throughput. Also, while the APs step through their various power settings, there may be some loss of coverage. This only lasts for the length of the AP scan (3to 4 minutes).

Q.Is the WDS radio required to be up during an AP radio scan?

A.No, but if the WDS radio is not up, the WDS will not be part of the radio scan. If you do include the WDS radio interface in the scan job, you will see some time-outs from this interface in the logs, but the scan will work on the other interfaces as expected. If you are not using a WDS to serve clients, you can turn off the radio to exclude this interface from the scan task.

Q.Is it necessary to do an AP radio scan after a firmware upgrade to get faster and better results?

A.It is recommended (but not required) that you run AP Radio Scan after any network change. The AP Radio Scan procedure will identify which radios are capable of detecting other radios. This information is periodically collected by WLSE via the WDS, but a Radio Scan will retrieve the information immediately.

FAQ and Troubleshooting Guide for the CiscoWorks Wireless LAN Solution Engine

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