How to configure mikrotik to use ethernet and lte?

Question

Computer networks

I want to set up lte modem as a backup channel. I have mikrotik. And I'm trying to create 2 Route:

And when lte is set to 192.168.0.1 then the internet through lte works. When lte or ether1 is on the gateway by default, then everything works. But if I change gateway to 192.168.2.1 in Routes and

Address:
192.168.2.5/24
Network:
192.168.2.0

in addresses.
then there is no Internet, and ping issues

From 192.168.2.5 icmp_seq=2 Destination Host Unreachable

By the way, if I prescribe gateway not with the address but with the name of the interface, then the network is also not available.

Tell me why in this case the interface is not available, or throw a link to how to solve my problem (lte as a backup channel).

Answer 1

Channel reservation in Mikrotik with lte modem