Check that radios are on different frequency channels from your neighbors. Usually Cisco WLC is good about rejecting rouge channels but it would be helpful. Make sure to set good passwords for SSIDs (if not using AD PEAP authentication)
How to authenticate using open source TACACS+
Use following in tacacs.conf file:
service = ciscowlc {
role = ALL
}
Role can be set as needed.
Check System Hardware
show sysinfo
Debug upload / downloads
debug transfer trace enable
How to upgrade software on Cisco WLC
Take a backup of existing configuration:
transfer upload mode tftp
transfer upload serverip x.x.x.x
transfer upload path .
transfer upload filename backup_filename.txt
transfer upload datatype config
transfer upload start
Transfer the latest software to WLC for upgrade
transfer download datatype code
transfer download mode tftp
transfer download serverip x.x.x.x
transfer download path .
transfer download filename filename
transfer download start
Once this transfer completes:
save config
reset system (to reboot)
WLC will reboot and when it comes up, will upgrade all APs connected to it. Status of these APs can be checked. Several commands to look at stuff:
show sysinfo
show ap slots
show ap image all
show client summary
show port summary
show network summary