Cisco AIR-CAP3502I-A-K9 Getting Started Guide - Page 16

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