I tried configuring the controller so the APs auto-join in with CAPWAP but when I open the controller GUI no APs show up and I get these error messages in the AP :
config down up [*06/15/2020 22:26:13.4856] [06/15/2020 22:26:15.6000] wired0 emac 0: link up [06/15/2020 22:26:15.6500] wired0: link up [06/15/2020 22:26:15.7000] wired0: started [*06/15/2020 22:26:15.7505] aptrace_register_sysproc_fn: duplicate registeratio n for 'wired'
Can you confirm if the access-point is on the capwap mode ?
In case the access-point is in the mobility express mode you'll need to convert them:
Converting an AP from Mobility Express to CAPWAP Type
To convert a Mobility Express AP into a CAPWAP AP, ap-type capwap from mobility express to lwap
Connect to the Console Port, Telnet or SSH to the AP.
Login to the Mobility Express controller console.
Type: apciscoshell (connect to the AP console)
Login to the AP console using the username Cisco and password Cisco. Both are case-sensitive.
Type command: ap-type capwap, and confirm .