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Cisco Bug: CSCvt24635 - CAPWAP DTLS session closed for AP, because the DTLS server session shutdown

Last Modified

Sep 02, 2020

Products (1)

  • Cisco Aironet 1850 Series Access Points

Known Affected Releases

ap-16.12.2.0

Description (partial)

Symptom:
4800 APs are disconnecting from 9800 controller with dtls error intermittently.

Error:
%CAPWAPAC_SMGR_TRACE_MESSAGE-3-EWLC_GEN_ERR: Chassis 1 R0/0: wncd: Error in Session-IP: 172.24.50.99[5272] Mac: 5c5a.c782.1de0 CAPWAP DTLS session closed for AP, cause: DTLS server session shutdown

Note: Issue was not present when code was on 16.11.1c ES3. 
After upgrading the code to 16.12.1s issue was observed.

Conditions:
4800 series APs joined to 9800 controller.
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