Disconnection of STA from AP AP820-L(V3)

Hi,

I have this AP configured as FAT with this version AP_RGOS 11.9(6)W3B1, Release(11160203)
Some devices disconnect and from log I have the following:

*Jul 17 08:32:34: %RSNA-6-DISCONNECT: Sta-f4d4.888e.44f5 4way handshake fail, please wait 0 seconds to try.

*Jul 17 08:32:34: %STAMG-6-STA_DEL: Client(f4d4.888e.44f5), ipv4(0.0.0.0) notify: leave AP(4881.d4ff.43d0)(Caller: rsna, reason: Wlancfg Change).

*Jul 17 08:32:49: %STAMG-6-STA_ADD: Client(f4d4.888e.44f5) notify: attach to AP(4881.d4ff.43d0).

*Jul 17 08:32:49: %RSNA-6-DISCONNECT: Sta-f4d4.888e.44f5 4way handshake fail, please wait 0 seconds to try.

*Jul 17 08:32:50: %STAMG-6-STA_DEL: Client(f4d4.888e.44f5), ipv4(0.0.0.0) notify: leave AP(4881.d4ff.43d0)(Caller: rsna, reason: Wlancfg Change).

*Jul 17 08:32:58: %STAMG-6-STA_ADD: Client(f4d4.888e.44f5) notify: attach to AP(4881.d4ff.43d0).

*Jul 17 08:32:58: %RSNA-6-DISCONNECT: Sta-f4d4.888e.44f5 4way handshake fail, please wait 0 seconds to try.

*Jul 17 08:32:58: %STAMG-6-STA_DEL: Client(f4d4.888e.44f5), ipv4(0.0.0.0) notify: leave AP(4881.d4ff.43d0)(Caller: rsna, reason: Wlancfg Change).

*Jul 17 08:33:07: %STAMG-6-STA_ADD: Client(f4d4.888e.44f5) notify: attach to AP(4881.d4ff.43d0).

*Jul 17 08:33:07: %RSNA-6-DISCONNECT: Sta-f4d4.888e.44f5 4way handshake fail, please wait 0 seconds to try.

Can you please help me to understand the reason?

Thanks

MArco

Dear sir

As we checked log, some STA device offline due to the  handshake fail that means clients input the incorrect password
so they are rejected by the AP and can not access the network

best regards,
Ross

GTAC-Ross replied at 2024-7-17 16:18
Dear sir

As we checked log, some STA device offline due to the  handshake fail that means clients i ...

Hi Ross,
when password is wrong I should receive this type of error:
Jul  3 15:15:29: %RSNA-6-DISCONNECT: Client(xxxxx.xxx.xxxx) 4way handshake fail, maybe password not correct.



in this case the reason of error seems Jul 17 08:32:58: %STAMG-6-STA_DEL: Client(f4d4.888e.44f5), ipv4(0.0.0.0) notify: leave AP(4881.d4ff.43d0)(Caller: rsna, reason: Wlancfg Change)

Thanks
Marco

Mturco84 replied at 2024-7-17 16:25
Hi Ross,
when password is wrong I should receive this type of error:
Jul  3 15:15:29: %RSNA-6-DISC ...

Dear Marco,
In this case,Jul 17 08:32:58: %STAMG-6-STA_DEL: Client(f4d4.888e.44f5), ipv4(0.0.0.0) notify: leave AP(4881.d4ff.43d0)(Caller: rsna,
reason: Wlancfg Change).
According to troubleshooting blog, It's seems like the
STA switches WLAN, logs off and logs on to the old WLAN.

You may check the detail error code in this blog.

Best regards,
Lex

GTAC-Lex replied at 2024-7-22 16:19
Dear Marco,
In this case,Jul 17 08:32:58: %STAMG-6-STA_DEL: Client(f4d4.888e.44f5), ipv4(0.0.0.0)  ...

Hi Lex,
thanks for the reply and the blog info; in the meantime I discovered that setting protocol from WPA3 to WPA/PWA2 the error disappears.
Anyway the client that disconnects is an iphone 14 that supports WPA3. So it's something to investigate with R&D
Best Regards
Marco