D-Link router and fiber optic cable are working properly

If your D-Link router and fiber optic cable are working properly, ensure correct configuration and network settings to achieve full internet connectivity.Verify Physical ConnectionsEven if the hardware is functioning, confirm that the fiber optic cable is securely connected to the Optical Network Terminal (ONT) and that the ONT is linked to your D-Link router's WAN port via an Ethernet cable. Check that all devices are powered on and that the router's LED indicators show normal operation (solid white for most D-Link models) to confirm proper connectivity .Check Router and Network SettingsIP Address Conflicts: Ensure each device on your network has a unique IP address to prevent connectivity issues .DNS Settings: Adjust your router's DNS settings if web pages fail to load or speeds are slow .Wi-Fi Configuration: Verify that your SSID is broadcasting and that the password is correct. Reconnect devices if necessary .Firmware Updates: Ensure your router firmware is up to date to avoid compatibility or performance issues .Test Direct ConnectionTo isolate potential issues, connect a computer directly to the ONT using an Ethernet cable. If the internet works, the problem may lie in the router configuration. If it does not, contact your ISP to check for outages or ONT issues .Optimize Wi-Fi PerformancePosition the router centrally and away from interference sources.Consider using Wi-Fi extenders or mesh systems for larger areas .Restart both the router and connected devices to refresh network settings .Contact Support if NeededIf all hardware and settings are correct but connectivity issues persist, reach out to D-Link customer support or your ISP for further assistance . They can help diagnose configuration problems, firmware issues, or service interruptions. By following these steps, you can ensure that your D-Link router and fiber optic connection provide reliable, high-speed internet access.