Why does the Wi-Fi connection with Zyxel Keenetic sometimes disappear?

Question

WiFi

I want to share a sore problem.
There are Zyxel Keenetic Ultra and ZyXEL Keenetic Giga II routers, which worked fabulously for more than a year, until 2015 hit. And then, as if in a fairy tale, problems with Wi-Fi began: the connection began to be interrupted periodically. This can be several times a day, almost immediately after turning on the router or after 6 hours of operation, no exact periodicity. If there was a connection, then gradually the pings to the router become higher than 2000 ms and then they die completely and the connection, although it hangs active, is in fact dead. Interestingly, it can come to life in a few minutes. But, usually, there are not enough nerves and I just reboot the router with a stupid turn-off and turn on. Initially, the problem appeared on the Giga II at home with wired internet. Then a couple of weeks later at work, where Yota was connected to Ultra.
If at the time of the glitch you connect to the router via Ethernet, then the Internet works wonderfully through it.
I tried to change routers in places - the problem persists regardless of the source of the Internet.
Firmware everywhere - the freshest.
Tried to disable DHCP, change channel numbers.
I didn’t just try to disable the public visibility of the SSID and filtering by mac-addresses (but since I tried to install routers in different places, this is hardly the case, although purely by symptoms it looks like the router starts to bend from something at some point over Wi-Fi).
The logs don't show anything wrong. Here's a screenshot for you:

I want to note that the moment the glitch with the connection starts at 9:22 and at this moment there are no red errors. Although I do not know what the error means, which is visible 14 minutes earlier at 9:08 in the screenshot.
In general, people, maybe someone has come across or is ready to advise something constructive (except "throw you away this Zyxel"). It's just strange that the problem manifested itself after 1 year of use and immediately on three similar devices.

Answer 1

Hello.
I solved the issue with falling off wi-fi in my own way.
In the house, they began massively installing gpon from Rostelecom, after which point 2.4 on Keenetic Extra began to periodically fall off.
Solution: On firmware 2.X, in the settings of the 2.4 GHz point, I set: Country -> Chaina, Channel -> 13
After that, wi-fi began to work stably.

Answer 2

Had a similar problem with Archer C7.
I decided this:
1. I scanned the frequencies and chose the most unloaded channel.
2. Set the transmission window to 20 MHz instead of 40.
3. Rigidly set the channel.
4. Disabled wps
5. Wpa2-psk encryption
6. Hard set dns from Google (8.8.8.8)

Answer 3

I have a similar problem with Keenetic 4G. The wi-fi is constantly falling off, while the Internet works on the wire. Either rebooting the router helps, or waiting 10-15 minutes.
The clogging of the channel has nothing to do with it. There is no other place around.

Answer 4

In general, the problem occurs when there are many other networks nearby. I gave such a router to my parents in the village, where there is one network nearby - everything works like a clock.

Answer 5

Hello!
keenetic giga ii firmware v.1.11 and v2 (latest versions), the same WiFi failures periodically began to occur since the summer of 2015. At the same time, MGTS GPONs were massively installed for all residents, their points automatically occupy frequencies 1-6-11. My Keenetic is set to auto-channel selection, with each reboot it automatically selects the least loaded channel, usually 1, 3, 6, 8, 11. I guess I need to switch to 5GHz ...

Answer 6

I have the same problem. The zyxel keenetic giga router worked like clockwork for several years, periodically updated the software and could not get enough of it. But the last 2-3 months, the Internet with wi-fi disappears, the wire works fine. Interestingly, over wi-fi, even the router itself does not respond.
Playing with channels and frequencies does not lead to obvious results, maybe better, or maybe an accident.

Answer 7

Keenetic LTE on the latest firmware - I see identical problems.
And yes, there are about 30 Wi-Fi networks in the visibility zone.