@chrislot Unplug Ethernet backhaul cable from Main Deco, connect router to it, configure router in Access Point mode and verify it works that way. When it does, connect Ethernet backhaul cable to one...

@chrislot If you are willing to spend under $20 US for the temporary solution, here it is: 1. Buy very inexpensive 2.4GHz WiFi router, such as TP-Link N300 WiFi Router (TL-WR841N); 2. Connect it to...

@MrChance I think I also saw this recommendation for Roomba vacuum, and I wonder why manufacturers put it in their documentation. It is only relevant for networking guru that deploys commercial grade...

@Rok088 This network configuration will work just fine.

@peterfreeth Then, please run the following test. Power off switch. Connect single client, either NAS or PC, directly to the second Ethernet port of Satellite Deco. client -> Satellite Deco -> Main...

@peterfreeth Please check if your Satellite Deco connected to the switch the following way: