@Sozkaynak 

Hi, can I have a picture of your current network map?

Normally there is no need for the additional setting to set up the Ethernet backhaul;

Thank you very much.

@Sozkaynak 

Hi, in this way, every time you try to connect one satellite Deco via Ethernet cable to the main Deco, the whole Deco system would turn red and lose internet connection?

--PS: just in case that you wish to connect one satellite Deco to the ZTE router instead, it would cause the whole Deco system to a loop connection and they would lose internet so that you might change the working mode on the Deco to access point, instead of the router;

Thank you very much.