The most stable way to connect between two wireless routers is to use a network cable!

If there is no network cable to connect between two routers, it is possible to consider using a power line to transmit network signals. The following conditions need to be met: it should not cross the meter, it is best not to use an air switch, there should not be too many household appliances between routers, and the power cat should be plugged into the wall as much as possible. WiFi 6 Wireless Router

Network cable connection method
The home main router connects to the broadband internet port of the optical cat. If the optical cat is in routing mode, the WAN port of the main router automatically obtains the IP address; If the optical cat is in bridging mode, then the main router's WAN port PPPOE dials to obtain the IP address. Wifi 5 Wireless Router

WAN port connecting to LAN port
The secondary router is used as the secondary router of the main router, and the WAN port of the secondary router is connected to the LAN port of the main router; As long as the management IP addresses of the primary, secondary routers, and optical cats are not in conflict, and are not in the same network segment, otherwise it is easy to cause IP address conflicts and unable to use the network.
Choose appropriate methods based on the family environment. The network cable connection is the most stable; There is a defect in the connection of the power cable, and it is necessary to pay attention to the interference of household appliances; There is wireless interference in wireless bridging. 5G CPE