Hi,

I have 4 decos. The main deco  and deco 2 are plugged in to the same switch(unmanaged linksys), and eth backhaul works fine between them. Deco 3 and 4 use the wifi backhaul.

Now I added two other switches(tp-link) serving 2 vlans(vlan1 and 2). The two tp-link switches are conected via trunk port. Both vlans are tested and work fine. Vlan 1 should be used for eth backhaul. The main swith(linksys) is connected to vlan1 port on the tp-link switch.

However, if i plug in the 3rd deco to the vlan 1 port, on the tp-link swith, the backhaul will not engage, instead it creates a loop.

It seems network connection will be established on both media(eth +wifi), but backhaul does not succeed.

Questions:

Should the eth backhaul work over vlan at all?

Should the eth backhaul work over multiply swiches?

Many thanks for your help in advance!

Z