@BaCsaba Take a look at this network diagram and assume there is more than one Satellite Deco hardwired to the switch: What will happen if Ethernet link between the switch and Main Deco is broken?...

@BaCsaba Please double check. Here is the thing. If you have network diagram similar to this, I have good explanation of where the issue is and how to troubleshoot it: The problem will be between...

@Adam1V I'll answer your questions in their order. Answers: 1. For Deco mesh in Access Point mode you should follow the 3rd picture. The 2nd picture is valid setup, too, but the 3rd picture will...

@BaCsaba I am familar with the symptoms you describe and they can be triggered under specific circumstances, but for that Main Deco must be connected to ISP modem/router, not through the switch....

@BaCsaba Your Deco X50s, are they connected to each other the following way:

@Paper9oll X55 is same as X50, different branding for different markets. Consider choosing between X50 and X68. Deco X50 (hardware V1) firmware has more features that could be useful, but Deco X68 is...