16
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 blue
Software upgrade in progress
Cycling through green,
red, and off
Discovery/join process in progress
Rapidly cycling
through blue, green,
and red
Access point location command invoked
Blinking red
Ethernet link not operational
Boot loader warnings
Blinking blue
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 blue
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 blue,
green, red, and off
General warning; insufficient inline power
Table 1
LED Status Indications (continued)
Message
Type
Status
LED
Message
Meaning
