18
Troubleshooting the Access Point Join Process
Access points can fail to join a controller for many reasons: a RADIUS authorization is pending;
self-signed certificates are not enabled on the controller; the access point’s and controller’s regulatory
domains don’t match, and so on.
Operating status Blinking amber Software upgrade in progress
Cycling through green,
red, and amber
Discovery/join process in progress
Rapidly cycling
through red, green, and
amber
Access point location command invoked
Blinking red Ethernet link not operational
Boot loader warnings Blinking amber Configuration recovery in progress (MODE
button pushed for 2 to 3 seconds)
Red Ethernet failure or image recovery (MODE
button pushed for 20 to 30 seconds)
Blinking green Image recovery in progress (MODE button
released)
Boot loader errors Red DRAM memory test failure
Blinking red and amber FLASH file system failure
Blinking red and off Environment variable failure
Bad MAC address
Ethernet failure during image recovery
Boot environment failure
No Cisco image file
Boot failure
Cisco IOS errors Red Software failure; try disconnecting and
reconnecting unit power
Cycling through red,
green, amber, and off
General warning; insufficient inline power
Table1 LED Status Indications (continued)