Keenetic 4G and Yota. Can I embed my own script in the router that will restart Yota when the connection is lost?

Question

linux

Hello!
Yota modem connected to Zyxel Keenetic 4G.
Under load, Yota falls off. Is it possible to embed your script (program) into the router, which would check either the modem's properties or just ping the address on the network and reboot the modem? And how difficult is it?
The firmware of the router is the latest official (V2) and all packages are also new.

Answer 1

On the latest Keenetic firmwares (including 4G) there is a component "Checking the availability of the Internet (ping checker)". In my opinion, it allows you to restart the connection in the absence of the Internet. If this does not help and you need to reboot the router, then, as already said, only on NDMS v1.1...

Answer 2

If the device supports the tftp protocol, you can upload your own script. Check the availability of the 69th TCP / UDP port on which the tftp service is listening.

Answer 3

If you change the firmware to a non-original one, for example OpenWRT, then you can do it.

Answer 4

There is still the first version of the firmware. Almost everything is possible there, but there are some drawbacks.