A common solution is to connect two routers on the same fibre optic line. In this article, Axarfusion will guide you through the steps to achieve this configuration and ensure that both routers work in harmony to give you a seamless browsing experience. In the basement, there is the ONT+residental gateway device that converts the light impulses to Ethernet. Check the specs, that the advertised wavelengths and desired distance/length match. Assuming you don't. Informatec Digital » Resources » How to connect two routers on the same network step by step Using a second router allows you to extend WiFi coverage and add LAN ports while maintaining a single, well-structured network.