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Cisco Bug: CSCvs94522 - IOS AP dropping M1 keys not sending them over-the-air

Last Modified

May 29, 2020

Products (1)

  • Cisco Aironet 3700 Series Access Points

Known Affected Releases

8.5(151.0)

Description (partial)

Symptom:
- Clients will not be able to connect to a WPA2 PSK SSID
- EAPOL M2 timeout in the WLC debugs:

*osapiBsnTimer: Jan 29 12:08:35.151: cc:25:ef:1e:2a:f9 802.1x 'timeoutEvt' Timer expired for station cc:25:ef:1e:2a:f9 and for message = M2
*Dot1x_NW_MsgTask_1: Jan 29 12:08:35.151: cc:25:ef:1e:2a:f9 Retransmit 1 of EAPOL-Key M1 (length 121) for mobile cc:25:ef:1e:2a:f9
*osapiBsnTimer: Jan 29 12:08:38.215: cc:25:ef:1e:2a:f9 802.1x 'timeoutEvt' Timer expired for station cc:25:ef:1e:2a:f9 and for message = M2

- AP will drop the M1 EAPOL key, not sending it over-the-air

Conditions:
• 5520 Controller running 8.5.151.0
• 2700 APs in local mode.
- WPA2 PSK WLAN security
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