Explore the guide library · Wired backhaul planning
Keep wired satellites on the main Deco’s LAN side so they follow the intended routed topology.
When Deco runs in Router mode, the main unit separates its upstream internet connection from the network it manages. A switch used for satellite backhaul belongs on the main unit’s LAN side. Treating every available Ethernet socket as equivalent can create an incorrect topology.
Draw the path before connecting
Write the order as internet gateway, main Deco, LAN switch and satellite Decos. TP-Link’s wiring guidance places wired satellites behind the main Deco in Router mode. Avoid connecting them to a switch that bypasses the main unit on its upstream side.
Label the physical cables
Identify the cable from the gateway and the cable leading to the distribution switch. If the cabinet contains similar patch leads, label both ends. A simple wiring mistake can be difficult to see once several identical cables disappear into wall sockets.
Add one satellite at a time
Complete the vendor’s initial setup for each unit, then connect the intended backhaul cable. Check the satellite’s connection type in the app before moving to the next one. This isolates the segment responsible if the network becomes unstable.
Check port roles
- Which main-unit port supplies internet access?
- Which port reaches the LAN switch?
- Are any ports reserved for IPTV or another special function?
- Does the switch port belong to the intended network?
Validate from a client
Connect a client near the satellite and confirm its expected address, gateway and internet access. Test a local resource if your household uses one. A link light alone does not prove that the correct routed network is available.
Keep the final diagram beside the network equipment or in private maintenance notes. If you later change Deco to Access Point mode, review the wiring again because the routing responsibility changes. The reliable arrangement is the one that matches the active mode, with every satellite’s upstream path understood and verified.
Sources and editorial notes
Sources checked 8–9 October 2026. Independent guidance and original illustrations; product comparisons use published specifications rather than hands-on benchmarks. Check the exact model, revision and regional documentation before changing settings.