I have an AIR-CT2504 & AIR-SAP1602E and I have not had any success getting the controller to see the access point. I am using one of the PoE ports to connect the two devices which does give me power but no data connection. Any help would be greatly appreciated.
Then connect your AP to a switchport configured for your WLC management vlan. (If not DHCP then you may need to assing a static IP for the AP). In this way AP should get register to your controller without any other hazzel