Hi @diste

CPE510 is just an access point, it cannot do routing. 

In your network, you need a router or switch to do the stick. 

We have an example for tplink router:

How to set up router on a stick with Omada gateway and L2 switch

diste wrote

I need to connect two networks:

1) 192.168.1.0/24 - switch - modem - cpe510 AP

2) 192.168.2.0/24 - switch - cpe510 C

I connected the 1 and 2 with 2 cpe510 in mode AccessPoint - Client.
It works fine in network 2 : I can reach internet and all devices of network 1.

In network 1 I cannot reach any device of network 2, even if I define a route for 192.168.2.0/24 with gateway the cpe510 

There is a way to reach both networks from both sides?