Resolution
You get this message when a client configured with no authentication settings associates to an access point configured with Open authentication with WEP or Open Authentication with EAP.
Since the access point is configured with open authentication client initially associates . But later when it sends a packet with no encryption this message is logged in the access point. Client might be another access point configured as a repeater or any wireless client. It can also happen in Bridge-Bridge topology.
Note: Even when a rogue client tries to associate you get this message . If so locate and remove the rogue. Chedck the Mac address in the error message to locate the rogue.
To address this issue,
- Match the security settings on the devices.
- Upgrade the firmware of the device.
Problem Type
Error message
Products
AP 340, 350
AP 1200
BR 340
BR 350
WLAN adapters (wireless card) / ACU (Aironet Client Utility)
