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Try the following:- Add the AP MAC address to the WLC MAC Filter list on Security settings.- Play changing the WLC configured year if a "DTLS-3-HANDSHAKE_FAILURE" appears on the WLC log for that AP.I've just solved the same AP join issue. AP model AI...
Hello,I just have the same issue with same AP models C9120AX and controller C9800-CL version 17.6.4Finally, It was resolved by restarting the WLC.Regards.
