05-19-2026 09:55 AM - edited 05-19-2026 09:58 AM
Hi Guys,
Have a 3 floor home which is completely automated. All the automation is connected to TP Link access points which are plugged into my Asus mesh system. Having a lot of issues so the automation guys suggested having a separate network dedicated to the automation.
Issue is that I have only one ethernet cable system running between terrace to second to first to ground floor and this was being used as a wired backhaul for my Asus mesh system.
Now, if I use that existing cabling to connect switches on each floor and then plug in my asus system to the switches and also add a TP Link router to the system which along with the TP link APs will also plug into the switches to result in a system as shown in the image, will
1. The Asus mesh network work as before?
2. Will I be able to keep the TP link and Asus systems completely separated with different IP addresses etc?
Total newbie to networking so really will appreciate any help here.
05-22-2026 04:23 AM
I am afraid I goofed two of the ASUS routers' connections:
The first ASUS router is set to AP with AiMesh (WAN/LAN or LAN).
The remaining two nodes need to be WAN/LAN or WAN ports.
All spare/remaining ports on the routers should be LAN ports to connect devices to...
05-19-2026 02:49 PM
Could you go into more detail with the automation issues you are experiencing?
There are two modems in your diagram. Do you have two ISPs? If you have one service like more typical then you'd need to get rid of one of them....
05-20-2026 09:58 AM - edited 05-20-2026 10:02 AM
I am so sorry, that TP link is a router not a modem. I have edited the image. Only a single ISP
05-23-2026 01:29 PM
I described the correct setup already. Simply put. NO, your "revised" diagram setup will NOT work. The modem has to have a direct connection to the main router's WAN port.
05-20-2026 10:54 AM - edited 05-20-2026 06:02 PM
The modem has to connect directly to your main router's WAN port and the main router's LAN port would then be connected to a switch. (The main router has to assign DHCP addresses) You could just bypass that first switch if it's not needed for Ethernet ports.
The ASUS routers will work in mesh (with each other if mesh capable) with them connected to a switch with one set up as a router. Personally, I would just set up all routers after your main as APs as it's less confusing and usually offers better performance. The only time I would use mesh is if no Ethernet connection is available and making a wireless mesh desirable for extending WiFi with each capable unit.