Hi,

I am quite new to network design and totally new to extending reach of a router, which is the aim of my question.

We have 2x ASUS RT-AX86U Pro Routers. The "Router A" is on the ground level of a building (quite in the middle of it) and is connected directly with a LAN cable to a FritzBox Cable Modem. The other Asus router, the "Router B", is 30m away in a different building and on the first floor.

The aim is to connect the A and B router, so they both use the FritzBox internet. B router is supposed to also be a running under the A router. So A and B are not siblings, but B is a child of A. We are not allowed to mount anything on the outside of the buildings.

It seems like the "TP-Link Pharos Serie CPE210 Outdoor WLAN Access Point" would be a solution. Also given that is seems that I can use is without an additional PoE box till 60m.

1.) Do I understand it correctly, that I can plug in the CPE210 with a LAN cable directly into my router and still get 60m extension out of it? (we do have power in the rooms, so it would not be a problem, but if we can save a device and cost, it would be nice)

2.) Will it be sufficient / overkill to use the CPE210. They need to be behing windows that have direct line of sight (must be inside). The one on the first flow might potentiall be partially hidden behind the wall as well.

3.) Do I need a sending CPE210 and receiving one as well? I would think 2 make a cleaner network on the B-Router side, as I could go into the "internet  port" with a lan cable, rather than having the router being a receiver of the remote signal and routing within the building as well (actually not sure if that is even possible?)

So my idea is the following:

Internet ---cable--- Fritzbox ---cable--- Router A ---cable--- CPE210 ~~~air~~~ CPE210---cable--- Router B

Does it make sense like that?

Is there a better (and still cost effective) solution?

Thanks in advance!