Beeline 3G/LTE - what MTU?

Question

Mikrotik

Hello.
There is a 4g modem in the form of MIKROTIK SXT LTE KIT (hereinafter referred to as router-2). It is connected to another MIKROTIK router (hereinafter router-1). And my computer is already connected to router-1.

What correct MTU should be registered in router-2 (LTE modem)?
Do I need to set this value on other nodes (where MTU=1500) and on my computer, or is it enough only on the interface with an LTE modem?

Answer 1

There is no need to write MTU anywhere, on the LTE interface it will set itself as it should. Leave 1500 as is on ethernet interfaces