CSCur43050 APs mfg in September/October 2014 unable to join an AireOS controller

Zum Jahresenden überrascht Cisco mit einem heftigen Bug:

CSCur43050

 

Doch worum gehts beim CSCur43050?

New Aironet APs with factory installed recovery IOS are able to join the controller 8.0.100.0 and download 15.3(3)JA IOS. But after the AP reload, the APs are unable to join the controller. On the AP, logs similar to the following are seen:

*Oct 16 12:39:06.231: AP has SHA2 MIC certificate – Using SHA2 MIC certificate for DTLS.

*Oct 16 13:14:56.000: %CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: ***.***.***.*** peer_port: 5246Peer certificate verification failed FFFFFFFF

*Oct 16 13:14:56.127: DTLS_CLIENT_ERROR: ../capwap/base_capwap/capwap/base_capwap_wtp_dtls.c:496 Certificate verified failed!
*Oct 16 13:14:56.127: %DTLS-5-SEND_ALERT: Send FATAL : Bad certificate Alert to ***.***.***.***:5246
*Oct 16 13:14:56.127: %DTLS-5-SEND_ALERT: Send FATAL : Close notify Alert to ***.***.***.***:5246

Another symptom of this problem is that the AP may be able to join the 8.0.100.0 controller, download the IOS code, boot up and join the controller OK … but when it goes to upgrade to newer 8.x code, it gets stuck in a loop failing the download.

 

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