All configuration according this guide
but LAP cant discover and join WLCM .
debug from controller modul
debug capwap *Jan 02 01:22:07.585: 00:21:a0:f8:fa:d0 Received LWAPP DISCOVERY REQUEST from AP 00:21:a0:f8:fa:d0 to 00:15:2c:ea:22:a0 on port '1'
*Jan 02 01:22:07.586: 00:21:a0:f8:fa:d0 LWAPP Discovery Request AP Software Version: 0x502b200
*Jan 02 01:22:07.586: Discarding discovery request in LWAPP from AP 00:21:a0:f8:fa:d0 supporting CAPWAP
the versions of controller and LAPs is the same 5.2.157
can anybody tell me what's wrong?