Ruckus R310 AP WAL_DBGID_STA_KICKOUT occurs several times a day

[magnus_idehn]

I get repeated and randomly occuring disconnects throughout the day that last between several minutes to a few seconds seconds. 

In the APs event log these message block repeat and are congruent with the times I lose connection I'm having trouble making following the meaning of these messages if its signal strength loss or some software issue

Jun 14 07:40:20 Ruckus-Unleashed kernel: FWLOG: [34938742] vap-0 AP PS: AID=1 detected out-of-sync now=3256164214 tx_waiting=3256153896 txq_depth=33
Jun 14 07:40:20 Ruckus-Unleashed kernel: FWLOG: [34938894] WAL_DBGID_STA_VDEV_XRETRY ( 0x40 )
Jun 14 07:40:21 Ruckus-Unleashed kernel: FWLOG: [34939815] WAL_DBGID_STA_VDEV_XRETRY ( 0x40 )
Jun 14 07:40:22 Ruckus-Unleashed kernel: FWLOG: [34940834] WAL_DBGID_STA_VDEV_XRETRY ( 0x40 )
Jun 14 07:40:22 Ruckus-Unleashed kernel: FWLOG: [34940952] WAL_DBGID_STA_VDEV_XRETRY ( 0x40 )
Jun 14 07:40:23 Ruckus-Unleashed kernel: FWLOG: [34941650] WAL_DBGID_STA_VDEV_XRETRY ( 0x40 )
Jun 14 07:40:23 Ruckus-Unleashed kernel: FWLOG: [34941847] WAL_DBGID_STA_VDEV_XRETRY ( 0x40 )
Jun 14 07:40:24 Ruckus-Unleashed kernel: wmi_peer_sta_kickout_event_handler:865 Kicking off STA d8:c4:6a:94:ba:64 AID 1
Jun 14 07:40:24 Ruckus-Unleashed kernel: wmi_unified_vdev_install_key_send Setting Key for Macaddress:0x64ba946ac4d8 
Jun 14 07:40:24 Ruckus-Unleashed kernel: Keyix=0 Keylen=16 Keyflags=0 Cipher=0 
Jun 14 07:40:24 Ruckus-Unleashed kernel:  Keydata=0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 
Jun 14 07:40:24 Ruckus-Unleashed kernel: wmi_peer_sta_kickout_event_handler:877 STA=d8:c4:6a:94:ba:64 AID 0 ref_cnt=(0) (after node_leave and node_free)
Jun 14 07:40:24 Ruckus-Unleashed Eved: STA-DISASSOC-REASON [wmi_peer_sta_kickout_event_handler(),868, STA kicked-out ] d8:c4:6a:94:ba:64 rx_rssi=16,ack_rssi=0,reason=0,freq=5660,chan=132,rx pkt,byte;tx pkt,byte=(557,109652,4755,838647)
Jun 14 07:40:24 Ruckus-Unleashed stamgr: tac_del_arp:dev=br0 SIOCDARP failed, errno=6 
Jun 14 07:40:25 Ruckus-Unleashed kernel: FWLOG: [34943636] WAL_DBGID_STA_KICKOUT ( 0x200 )

[michael_brado]

The "WAL_DBGID_STA_VDEV_XRETRY ( 0x40 )"message comes from excessive retries to a given client.
Each message represent 64 packets have been extensively retried by the AP to that client without receiving any Ack. 
Consecutive 512 extensive retries cause AP to kickout the client.
That's what the message means. 

Questions are, what version of Unleashed are you running, how many other APs are around this one, is your client the only one affected?

[hyosang_choi]

I had met similary syptom and log a few years ago.

At that tine the major reason was high airtime due to other aps and wips(they may active scan).

At first check airtime on your site.