Cisco AIR-LAP1042N-E-K9 시작하기 매뉴얼 - 페이지 18
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Table 1
LED Status Indications (continued)
Message
Type
Boot loader errors
Cisco IOS errors
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.
Controller software enables you to configure the access points to send all CAPWAP-related errors to
a syslog server. You do not need to enable any debug commands on the controller because all of the
CAPWAP error messages can be viewed from the syslog server itself.
The state of the access point is not maintained on the controller until it receives a CAPWAP join
request from the access point. Therefore, it can be difficult to determine why the CAPWAP discovery
request from a certain access point was rejected. In order to troubleshoot such joining problems
without enabling CAPWAP debug commands on the controller, the controller collects information for
all access points that send a discovery message to it and maintains information for any access points
that have successfully joined it.
The controller collects all join-related information for each access point that sends a CAPWAP
discovery request to the controller. Collection begins with the first discovery message received from
the access point and ends with the last configuration payload sent from the controller to the access
point.
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Status
LED
Red
Blinking red and blue
Blinking red and off
Red
Cycling through blue,
green, red, and off
Message
Meaning
DRAM memory test failure
FLASH file system failure
Environment variable failure
Bad MAC address
Ethernet failure during image recovery
Boot environment failure
No Cisco image file
Boot failure
Software failure; try disconnecting and
reconnecting unit power
General warning; insufficient inline power