Ap's at remote location intermittently joins unjoins the WLC controller 5508. AP's getting IP's from DHCP server located at locan end.
Please find below debug logs from controller.
Anyone can help to troubleshoot teh problem and how to recover from it.
8785)since DTLS session is not established
*spamApTask0: Nov 27 10:37:28.438: 00:27:0d:eb:f5:20 DTLS connection was closed
*spamApTask5: Nov 27 10:37:32.772: 00:1d:a1:68:ec:00 Discarding non-ClientHello Handshake OR DTLS encrypted packet from 161.5.8.159:48822)since DTLS session is not established
*spamApTask7: Nov 27 10:37:32.962: 00:27:0d:eb:e9:80 Duplicate sequence number in request message
*spamApTask1: Nov 27 10:37:36.506: 00:1d:a1:68:ec:00 Discarding non-ClientHello Handshake OR DTLS encrypted packet from 161.5.9.20:48829)since DTLS session is not established
*spamApTask3: Nov 27 10:37:37.285: 00:27:0d:ec:89:40 DTLS connection was closed
*spamApTask5: Nov 27 10:37:42.311: 00:27:0d:eb:e8:70 DTLS connection was closed
*spamApTask5: Nov 27 10:37:44.758: 00:27:0d:eb:ed:30 DTLS connection was closed
*spamApTask3: Nov 27 10:37:46.673: 00:1d:a1:68:ec:00 Discarding non-ClientHello Handshake OR DTLS encrypted packet from 161.5.8.111:48844)since DTLS session is not established
*spamApTask6: Nov 27 10:37:47.151: 00:27:0d:4a:7c:50 Duplicate sequence number in request message
*spamApTask4: Nov 27 10:37:47.707: 00:27:0d:eb:e7:b0 Duplicate sequence number in request message
*spamApTask7: Nov 27 10:37:48.018: 00:27:0d:eb:e9:80 DTLS connection was closed
*spamApTask3: Nov 27 10:37:50.751: 00:1d:a1:68:ec:00 Discarding non-ClientHello Handshake OR DTLS encrypted packet from 161.5.8.137:48826)since DTLS session is not established
*spamApTask1: Nov 27 10:37:53.632: 00:27:0d:eb:e8:80 DTLS connection was closed
*spamApTask5: Nov 27 10:37:56.193: 00:1d:a1:68:ec:00 Discarding non-ClientHello Handshake OR DTLS encrypted packet from 161.5.8.172:48785)since DTLS session is not established
*spamApTask2: Nov 27 10:37:57.470: 00:27:0d:eb:f0:b0 Duplicate sequence number in request message
*spamApTask0: Nov 27 10:37:58.439: 00:27:0d:eb:f5:20 DTLS connection was closed
*spamApTask1: Nov 27 10:38:00.236: 00:27:0d:eb:e7:a0 Duplicate sequence number in request message
*spamApTask5: Nov 27 10:38:02.774: 00:1d:a1:68:ec:00 Discarding non-ClientHello Handshake OR DTLS encrypted packet from 161.5.8.159:48822)since DTLS session is not established
*spamApTask1: Nov 27 10:38:06.508: 00:1d:a1:68:ec:00 Discarding non-ClientHello Handshake OR DTLS encrypted packet from 161.5.9.20:48829)since DTLS session is not established
*spamApTask3: Nov 27 10:38:07.286: 00:27:0d:ec:89:40 DTLS connection was closed
*spamApTask0: Nov 27 10:38:07.370: 00:27:0d:eb:f5:20 Duplicate sequence number in request message
