Thank you for your quick reply. Is that possible to find out which location is this AP belong to and add the country code in controller? Because as I saw, we can set the radio channel and freq which can connect. Any suggestion? I want to solve this problem without RMA because there are a few APs got the same issues.
P.S. Tried Country code "Thailand", but cannot change the country code and show error "Error in setting country code"
You can add "HK" in the country code of the controller, HOWEVER, this is not recommended.
The reason is because if you have two (or more) countries with different regulatory domains, then only the common channels will be enabled. There are even cases when even one of your radios, like 802.11a, will be disabled.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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