To set up your router for fiber internet quickly, connect the router to your fiber modem, access the router's settings via a web browser, and input the provided ISP credentials. Make sure to update the firmware, configure Wi-Fi security, and customize your network name for optimal performance. With. Fiber optic technology represents a revolutionary advancement in connectivity, transmitting data via pulses of light through thin strands of glass or plastic fibers. In this guide, we'll walk you through how to. BSNL usually configures your ONT during installation, so most people never need to open its settings page at all. However, there are a few situations where you may have to log in.