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Cisco Bug: CSCuo48442 - Stale old DTLS data_encryption session histories are left on WLC

Last Modified

Nov 27, 2020

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

7.6(100.21)

Description (partial)

Symptom:
When you enable data_encryption (config ap link-encryption AP_NAME) and later disable it, you will see stale old data_encryption session history even if you did not have any APs associated to the WLC.
This was confirmed as a cosmetic bug having on impact for operations.

(Wireless Controller) >config ap link-encryption disable AP_NAME
show ap  summary 

Number of APs.................................... 0

(WISM2-hosaki) >show dtls connections 

       AP Name         Local Port        Peer IP        Peer Port                Ciphersuite          
 -------------------- ------------- ----------------  -------------     ------------------------------
                       Capwap_Data    172.23.192.254       1292           TLS_RSA_WITH_AES_128_CBC_SHA <<<<<<< This entry must be removed from the output for "show dtls connection".

Conditions:
WLC running 7.5.102.0, 7.6.100.0, 7.6.110.0.
AP1600/2600/3600 series
Enable data DTLS link encryption for APs then disable it later.

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