AP541N drops all clients

[Guest]

As I posted about in the other AP541N thread about degraded performance, mine did a strange client disconnect last week. It dropped all authenticated clients, but they all thought they were still connected. A quick disable/enable of the wireless card on the laptop would get the computer back on the AP. This same thing happened again today. Device information and configuration:Device: AP541NH/W: V01S/W: 1.9.1Wireless: Channel 11, Key Refresh: 0, WPA Personal, TKIP Log shows all the clients authenticating earlier in the day. Hours later, I get a rash of: Jun 21 10:30:43     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:xx had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:cc had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:bb had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:aa had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:zz had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:yy had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:xx had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:cc had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:bb had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:aa had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:zz had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:yy had an authentication failure.Jun 21 10:30:13     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:xx had an authentication failure. Followed by:Jun 21 10:30:43     info     hostapd     wlan0: STA xx:xx:xx:xx:xx:cc IEEE 802.11: deauthenticated due to inactivityJun 21 10:30:43     info     hostapd     The wireless client with MAC address 00:1b:77:94:dd:89 had an authentication failure.Jun 21 10:30:43     info     hostapd     wlan0: STA xx:xx:xx:xx:xx:bb IEEE 802.11: deauthenticated due to inactivityJun 21 10:30:43     info     hostapd     The wireless client with MAC address 00:184c:fd:26 had an authentication failure.Jun 21 10:30:43     info     hostapd     wlan0: STA xx:xx:xx:xx:xx:aa IEEE 802.11: deauthenticated due to inactivityJun 21 10:30:43     info     hostapd     The wireless client with MAC address 00:13:e8:f9:c9:f5 had an authentication failure.Jun 21 10:30:43     info     hostapd     wlan0: STA xx:xx:xx:xx:xx:zz IEEE 802.11: deauthenticated due to inactivityJun 21 10:30:43     info     hostapd     The wireless client with MAC address 00:21:5d:36:3e:c4 had an authentication failure.Jun 21 10:30:43     info     hostapd     wlan0: STA xx:xx:xx:xx:xx:yy IEEE 802.11: deauthenticated due to inactivityJun 21 10:30:43     info     hostapd     The wireless client with MAC address 00:16:6f:10:fb:9f had an authentication failure.Jun 21 10:30:43     info     hostapd     wlan0: STA xx:xx:xx:xx:xx:xx IEEE 802.11: deauthenticated due to inactivity Cycling the wireless switch on my laptop yields:Jun 21 10:33:41       info       hostapd       wlan0: STA xx:xx:xx:xx:xx:xx WPA: group key exchange completedJun 21 10:33:41     info     hostapd     The wireless client with MAC address xx:xx:xx:xx:xx:xx has been successfully authenticated.Jun 21 10:33:41     info     hostapd     wlan0: STA xx:xx:xx:xx:xx:xx WPA: pairwise key exchange completed WPAv1Jun 21 10:33:41     info     hostapd     wlan0: IEEE 802.11 STA xx:xx:xx:xx:xx:xx associated with BSSID xx:xx:xx:xx:xx:ddJun 21 10:33:41     info     hostapd     wlan0: IEEE 802.11 Assoc request from xx:xx:xx:xx:xx:xx BSSID xx:xx:xx:xx:xx:dd SSID MYAPSSIDJun 21 10:33:39     info     hostapd     wlan0: IEEE 802.11 STA xx:xx:xx:xx:xx:xx deauthed from BSSID xx:xx:xx:xx:xx:dd reason 4  I changed the channel from 11 to 9, and started having this occur like mad. Ive got it at 3 now. It was odd, as last week, this only happened once early in the week, and was fine for the rest. Same thing this week as far as it happening early in the week.....

[Guest]

Thanks for your e-mail.  I am on vacation and will respond on my return.  If you need help in my absence, please call the office at 215-968-7577.  Peter.

[Guest]

Just to update this. Since changing the channel, this has yet to happen again. So perhaps that was the fix. Quite bizarre.

[Guest]

Well, this has just happened again this morning. Same experience. Cycling the wireless switch on the notebooks reconnected them.

[Guest]

NEW FIRMWARE ALERT! Firmware v 1.9.2 is now available here:http://tools.cisco.com/support/download ... =282790482 Release notes: http://www.cisco.com/en/US/docs/wireles ... -19182.pdf Thanks for your patience!