Monthly disassociations

[chris_lutka_gam]

This is my first post. Please be gentle since I may not have all the terminology correct.
I have a deployment of 16 r310 APs in my environment, all using a local Unleashed management system. I set my primary network to use WPA2, open authentication, and use D-PSK (mobile friendly) for the key. There is no expiry but D-PSK is limited to 1 device.
The issue I'm encountering is that one user, about monthly, gets disconnected from his Apple iPhone to my WiFi network.
Going through the logs, I see the following entries for his device's MAC address:

Aug 28 14:26:10 HomeImportsWiFi Eved: STA-DISASSOC-REASON [ieee80211_send_mgmt(),4698,send station disassociate] b8:44:d9:xx:e1:25 rx_rssi=33,ack_rssi=0,reason=1,freq=5560,chan=112,rx pkt,byte;tx pkt,byte=(6,990,6,654)
Aug 28 14:26:05 HomeImportsWiFi Eved: STA-DISASSOC-REASON [ieee80211_send_mgmt(),4698,send station disassociate] b8:44:d9:xx:e1:25 rx_rssi=32,ack_rssi=0,reason=1,freq=5560,chan=112,rx pkt,byte;tx pkt,byte=(6,990,6,654)
Aug 28 14:25:54 HomeImportsWiFi Eved: STA-DISASSOC-REASON [ieee80211_send_mgmt(),4698,send station disassociate] b8:44:d9:xx:e1:25 rx_rssi=29,ack_rssi=0,reason=1,freq=5560,chan=112,rx pkt,byte;tx pkt,byte=(5,825,6,654)
Aug 28 10:41:38 HomeImportsWiFi Eved: STA-DISASSOC-REASON [ieee80211_send_mgmt(),4698,send station disassociate] b8:44:d9:xx:e1:25 rx_rssi=24,ack_rssi=0,reason=1,freq=2412,chan=1,rx pkt,byte;tx pkt,byte=(5,655,6,654)
Aug 28 10:41:33 HomeImportsWiFi Eved: STA-DISASSOC-REASON [ieee80211_send_mgmt(),4698,send station disassociate] b8:44:d9:xx:e1:25 rx_rssi=25,ack_rssi=0,reason=1,freq=2412,chan=1,rx pkt,byte;tx pkt,byte=(5,655,6,654)
Aug 28 10:41:27 HomeImportsWiFi Eved: STA-DISASSOC-REASON [ieee80211_send_mgmt(),4698,send station disassociate] b8:44:d9:xx:e1:25 rx_rssi=23,ack_rssi=0,reason=1,freq=2412,chan=1,rx pkt,byte;tx pkt,byte=(5,655,6,654)
Aug 28 10:41:22 HomeImportsWiFi Eved: STA-DISASSOC-REASON [ieee80211_send_mgmt(),4698,send station disassociate] b8:44:d9:xx:e1:25 rx_rssi=22,ack_rssi=0,reason=1,freq=2412,chan=1,rx pkt,byte;tx pkt,byte=(5,655,6,654)

Performing my due diligence, I did search and see many messages but they all seemed to be related to reason=8 yet mine above is reason=1. 
I put the key back in to the iPhone and everything worked as expected. My questions are:
1. What does reason=1 really mean?
2. Would it be the iPhone or the r310/Unleashed system arbitrarily disassociating the device?
3. How can I prevent this from occurring next month?
4. Should I simply regenerate a new D-PSK for the device and wait it out? (I would do this but it doesn't answer the why.)
No other iPhone in my environment is having this issue of course.

[michael_brado]

Hi and welcome Chris,

    These are normal "housekeeping" events from APs that have clients roam away from them,
to clear their association tables.  Not important or bad.  Similar question recently, other details

https://forums.ruckuswireless.com/ruckuswireless/topics/frequently-disconnect-on-unleashed-ap-as-kic...

[chris_lutka_gam]

Hi Michael,

Thanks for the reply.

I guess I didn't explain fully. It was all there in my head. It just didn't get put into print.

My issue is that the iPhone user gets disassociated from the entire network, password and all. I must put in a new password since the phone thinks the network is now a new association. The user didn't go into his WiFi settings and forget the network. It just didn't connect any longer.

What would cause the iPhone to not connect and then finally remove the cached WPA2 password? I do understand that this could very well be isolated to this one iPhone as well. I'm exploring Ruckus as one avenue.

Is there another event in the logs I should be looking for? If this was normal housekeeping, why do I see this event more than once to the same AP mere seconds apart. Did the Ruckus network not perform its housekeeping correctly the first time? The user did not move between APs. He was in his office during those times which is covered by only one AP in my Unleashed network.

I will provide more logged lines if I can but I need to be directed to filter out the junk.

[michael_brado]

This sounds more like the iPhone client issue, I have no idea how it could do that.  Only one phone has this problem?
There might be a series of housekeeping dissassociate msgs within milliseconds, that would not be unusual.

[chris_lutka_gam]

As a followup, the same user's iPad did fail one day later with the same issue whereby the device was disconnected and I'd have to put in the assigned D-PSK. I have issued new D-PSKs for the user's devices and cancelled the old ones. I'll know more in one month which seems to be the schedule for the issue to reoccur.