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WAP551 : CISCO7921G deauthenticated every 2-3 minutes from WLAN and has to re-register on CME

Hello,

 

We have bought two WAP551 devices (+SG300 and a 881-Voice) to replace an old UC540 with wireless controller.

We are facing two issues (the other being discussed on a separate thread).

We have a CISCO 7921G phone connecting on VAP 1 which is SSID voice (WPA2-AES). The 7921G boots correctly, authenticate on the WLAN network, receives IP, register with CME, works for a few minutes, then I receive these errors on the WAP551 :

Oct 27 2014 00:45:51infohostapd[1068]STA c4:71:fe:d7:ab:a1 associated with BSSID 18:9c:5d:3d:6a:21 
Oct 27 2014 00:45:51infohostapd[1068]Assoc request from c4:71:fe:d7:ab:a1 BSSID 18:9c:5d:3d:6a:21 SSID voice 
Oct 27 2014 00:40:43infohostapd[1068]STA c4:71:fe:d7:ab:a1 deauthenticated for reason 16: Group key handshake timeout 
Oct 27 2014 00:40:43infohostapd[1068]Station c4:71:fe:d7:ab:a1 had an authentication failure, reason 17 
Oct 27 2014 00:35:41infohostapd[1068]STA c4:71:fe:d7:ab:a1 associated with BSSID 18:9c:5d:3d:6a:21 
Oct 27 2014 00:35:41infohostapd[1068]Assoc request from c4:71:fe:d7:ab:a1 BSSID 18:9c:5d:3d:6a:21 SSID  voice 
Oct 27 2014 00:35:36infohostapd[1068]STA c4:71:fe:d7:ab:a1 deauthenticated for reason 16: Group key handshake timeout 
Oct 27 2014 00:35:36infohostapd[1068]Station c4:71:fe:d7:ab:a1 had an authentication failure, reason 17 
Oct 27 2014 00:30:34infohostapd[1068]STA c4:71:fe:d7:ab:a1 associated with BSSID 18:9c:5d:3d:6a:21 
Oct 27 2014 00:30:34infohostapd[1068]Assoc request from c4:71:fe:d7:ab:a1 BSSID 18:9c:5d:3d:6a:21 SSID  voice 

 

And each time the 7921G has to re-register on the CME (and so does not ring half the time, or communication is broken, etc...)

On the CME I receive the following errors

Oct 26 23:50:40.791: %IPPHONE-6-REG_ALARM: Name=SEPC471FED7ABA1 Load=CP7921G-1.4.5SR1.3 Last=TCP-timeout
Oct 26 23:50:41.019: %IPPHONE-6-UNREGISTER_ABNORMAL: ephone-2:SEPC471FED7ABA1 IP:10.1.2.15 Socket:2 DeviceType:Phone has unregistered abnormally.
Oct 26 23:50:41.019: %IPPHONE-6-REGISTER: ephone-2:SEPC471FED7ABA1 IP:10.1.2.15 Socket:3 DeviceType:Phone has registered.


Please note that we tried with latest WAP551 firmware (1.1.0.4) and also with latest 7921G firmware (1.4(5)SR1.3). Did not work better with WAP551 firmware 1.0.3.4 (that it was shipped with) and older 7921G 1.4(1)SR1 firmware. The two WAP551 are in a cluster, but when only one is available it is not better.

This problem render our 7921G unusable. Most of the time you cannot make or receive calls.

Any thought ?

Best Regards,

    Xavier.

 

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