I see my problem. For exemple: three ports 1/0, 1/1, 1/5. Port 1/5 plug into wired LAN and get DHCP (192.168.81.x), port 1/0 assign to VLAN (172.16.0.x) and connect to AP and port 1/1 assign to VLAN 20 the same to port 1/5. Controller IP is IP of VLAN 1.
The problem is if i plug AP into port 1/0 (IP 172.16.0.x), it runs. But if plug into port 1/1 the AP will get IP 192.168.81.x and down, the controller will never see it again even in "Monitor" tab, until i put it back to port 1/0 (VLAN 1). I reset AP 10 times, try and try but the result doesn't change.
Did i make any mistake?