USG20W-VPN WLAN shutting down after warm up

User1

I've had the unit for more than a year and haven't had any issues so far. In the past few days though, it started disabling the WLAN after a few minutes of uptime.

There is nothing in the LOGs mentioning this, the WLAN light turns off on the front panel and the WLAN is gone.

The issues seems to be connected top the uptime of the unit and the length of the cool-down period, the longer I have it off, the longer the WLAN works afterwards. I can power up the WLAN by changing the power setting in the config section, but it doesn't stay up for long before shutting down again. All antennas are connected and are finger tight.

Attached is the CAPWAP log for the unit, I tried rebooting it and it show the AP loading, I can't see anything in regards to the shut down.
I am running 4.30(ABAR.0).
Any help would be highly appreciated, thanks!

Zyxel_Charlie

@User1

To clarify this case,

please private message configuration and diagnostic information to me.

we need you to collect Diagnostic info after the issue happened.

Go to Diagnostics, Press collect now.(Wait for 3~5 mins). Download the files from Diagnostic files field.

Charlie

User1

Hi Charlie,

we rolled back to 4.25 ABAR 1 and things look stable now. I will upgrade to 4.30 again over the weekend and collect the requested diagnostic information.

User1

After upgrading to 4.30 the unit run smoothly for 3 days and today the issue started to manifest itself again. Once it starts it is constantly turning the WiFi off. I collected the diagnostic info and rolled back to 4.25 for reliable operation.

Zyxel_Charlie

@User1
Thanks for your shared information.
We will check it internally ,so if there is any update, I will let you know.
Charlie

ddevilbiss

Hi Charlie,
I too am having the same issue where either the WiFi shuts down spontaneously or router spontaneously reboots. I am running firmware version 4.30(ABAR.0). I have collected the diagnostic logs and will private message them to you as well. In the meantime, I'll roll back the firmware to 4.25 as User1 suggests. Thanks and all the best.  

Zyxel_Charlie

@ddevilbiss and @User1 ,
The firmware which can solve this issue has been private message to you, so please check it.
Charlie

User1

Hi Charlie,

after trying to upgrade the FW to the latest version you provided over PM, I get the following error:


It seems like this was compiled for a different device.

BR.

Zyxel_Charlie

@User1
The correct firmware was private message to you,so please check it.
Charlie

edoardo_filippini

Hello.
My firwall is USG20W-VPN
Firmware version 4.31 (ABAR, 0) RELEASED 2018-03-28.
The wifi Guest (only Guest) switches off automatically after a while. The primary Wifi is turned on always. 

How to disable the auto-off of the guest ?
Thanks.

Zyxel_Cooldia

HI @edoardo_filippini,

Please change the guest wifi duration to "Always"