topic Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP. in Aerohive Migrated Content

Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

jmroy — Tue, 12 Jun 2018 01:35:14 GMT

Hi community, this is my first post.

Context :

In our company, we have a lift. There is a Windows tablet bolt on that lift. The driver of the lift goes to multiple places in the company, crossing 4-5 AccessPoint.

The APs are set in neighbor, and we see in logs when the client is being sent to a neighbor AP.

APs are 5x AP121 on 6.5r8.172694
WMM is activated

Problem :

There is a problem where the Windows tablet is being disconected from the network, like there were a roaming problem, or something. He only disconnect and reconnect the Wifi adapter and the network is coming back OK.

Logs :

When i monitor the MACADDR of the tablet, we see multiple problems.Just note that we do not have a problem where the tablet is NEVER able to connect. Disabling the wifi interface and reenabling it make it works though.

I will put a log file in attached.

Here are some highlights :

Error 1 : 4 way Handshake failure

06/11/2018 09:50:41 AM 80000B98F7E7 F09CE91673D4 INF2911 BASIC (2)Sta(at if=wifi0.1) is de-authenticated because of 4way handshake failure

06/11/2018 09:50:41 AM 80000B98F7E7 F09CE91673D4 INF2911 INFO (3)Tx disassoc (reason 2 <prior-auth-invalid>, pwr 11dBm)

06/11/2018 09:50:41 AM 80000B98F7E7 F09CE91673D4 INF2911 BASIC (4)Sta(at if=wifi0.1) is de-authenticated because of notification of driver

Error 2: ?

06/11/2018 10:15:13 AM 80000B98F7E7 F09CE91673D4 INF2911 INFO (333)Rx deauth (reason 1 <unspecified>, rssi 36dB)

06/11/2018 10:15:13 AM 80000B98F7E7 F09CE91673D4 INF2911 BASIC (334)Sta(at if=wifi0.1) is de-authenticated because of notification of driver

Error 3 ?

06/11/2018 12:15:09 PM 80000B98F7E7 F09CE91673D4 INF2911 INFO (1718)Rx deauth (reason 1 <unspecified>, rssi 32dB)

06/11/2018 12:15:09 PM 80000B98F7E7 F09CE91673D4 INF2911 BASIC (1719)Sta(at if=wifi0.1) is de-authenticated because of notification of driver

Error 4 ?

06/11/2018 12:46:25 PM 80000B98F7E7 F09CE91673D4 INF2911 INFO (1938)Rx deauth (reason 1 <unspecified>, rssi 23dB)

06/11/2018 12:46:25 PM 80000B98F7E7 F09CE91673E8 INF2911 DETAIL (1939)Rx <specific> probe req (rssi -69dB)

TESTS :

When doing a survey, i see at least 2-3 AP (with the same SSID) everywhere, for the Roaming. So there is no zone where there is no Wifi.

When i go with a laptop, i can go from one side to another side of the company with a ping -t without being disconnected from the Wifi.

Problem may be a roaming problem ? (since when i disconect and reconnect the Wifi, i am successfully being reconnect to the nearest AP)

Problem may be a channel problem ? (set automaticly).

Thank you for your help !

Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

dsouri — Tue, 12 Jun 2018 04:11:02 GMT

Hello,

When moving around with a laptop, are you holding the laptop and walking?

Could you describe the Casing/Harness the Tablet is in? Could you upload a photo?

To start troubleshooting, the first things we would look at is the RF environment and either identify or rule-out an issue.

This guide explains the steps and defines the data points you would look for:

https://thehivecommunity.aerohive.com/s/article/Radio-Frequency-Interference-NG

Happy to help,

David Souri

HiveCommunity Moderator

Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

jmroy — Wed, 13 Jun 2018 19:54:32 GMT

Hi David,

Thank you for the quick reply.

When i was testing with the laptop, yes i was walking like 10 meter, and was stopping to let my wifi adapter the time to understand changement. I went everywhere in the shop, this way.

For the casing of the tablet, i will get a photo in a couple of hours, before the diner (it is 8h52 AM in here). I will let you know.

Plus, i have someone who is taking notes to know where and at what hours a wifi problem occured. I will be able to compare with the client monitor logs of the tablet to know what happened to these hours.

I will take time to read the link you sent me so i can verify what is up relating to the interference.

Will be back with more infos !

Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

dsouri — Wed, 13 Jun 2018 21:16:35 GMT

Hi @Jean-Marie Roy ,

Please also know, at anytime we can move this over to a Support Case as I see the Domain your email belongs do has Select Level Support.

Happy to assist further, I am in Central Time so at the time of this post it is 9h16 AM

David Souri

HiveCommunity Moderator

Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

jmroy — Thu, 14 Jun 2018 00:22:03 GMT

You can move this case to a Support Case then .

Best regards,

Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

jmroy — Fri, 15 Jun 2018 01:31:28 GMT

Hi David Souri, I am waiting your follow regarding the openning of the Support Case.

Jm Roy

Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

jose_gonzalez — Fri, 15 Jun 2018 01:34:44 GMT

Try disabling wireless power management on the tablets.

Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

dsouri — Fri, 15 Jun 2018 02:07:36 GMT

Hi @Jean-Marie Roy ,

Case is created, also I had to move your Contact record to the correct company and enable Case management within HiveCommunity.

Thank you, and talk soon!

David Souri

HiveCommunity Moderator

Re: Multiple random issues with Windows tablet being disconnected from WiFi on multiple AP.

wwillingham — Mon, 18 Jun 2018 21:29:34 GMT

Also, don't forget to update the driver on the tablet. A lot of Wi-Fi issues come down to old, "flaky" drivers.