5.2 Symptom: Connection Failure
There are some information you have to know from customer and follow the
order of the questions you will know how to troubleshooting.
The procedure of the troubleshooting:
1. Check the configuration of the controller (USG/ ZyWALL/ NXC).
2. Environment Verification
3. Information collection and report the issue to the HQ.
If you don’t know how to do above the question and steps, please keep
reading.
1 Check the configuration of controller (USG/ ZyWALL/ NXC).
Clarify which kind of connection is failed.
Check the configuration which was setup the mac-filter or not.
Check the AP output power which was set to excessive AP output
power or low output power or not.
If the 802.1x authentication fails, please refer the 802.1x
troubleshooting Guide.
Check the configuration of controller to see if the router’s security is
interfering. If you were using WPA or WPA2 already, try changing the
encryption mode from TKIP to AES.
Check the AP’s configuration which was setup the RSSI threshold or
not.
If there are the logs which were indicated AP CAPWAP status is offline
or error, please refer the CAPWAP troubleshooting.
2 Environment Verification.
Make sure the wireless site survey performance is exceptionally.
Check the AP’s signal strength directly by the utility of the station. Using the
SSID scanning free application “NetSurveyor” to scan the environment and
check the AP signal and co-channel / overlapping.
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