@David-TP They are connected directly between each other. But do you know what? One cable was broken! I did not expect that, now it is working as intended.

Hi! I am having some problems with the ethernet backhaul function. My system looks like this: ISP Modem - wire - Main Deco - wire - Satellite 1 - wire - Satellite 2 (all X50) Satellite 1 shows up...