To configure a router with a static IP for fiber optic connections, you need to assign a fixed IP to your WAN interface, set the subnet mask and gateway, and ensure proper routing for connected devices.

Step 1: Access Your Router's Admin Panel

Connect your computer to the router via Ethernet or Wi-Fi. Open a web browser and enter the router's IP address (commonly 192.168.0.1 or 192.168.1.1) to log in with your admin credentials . Some routers, like TP-Link, use https://tplinkwifi.net/ for access .

Step 2: Configure the WAN Interface

For fiber optic connections, the router's WAN interface must be set to use the static IP provided by your ISP. Enter the following details:

• IP Address: The static IP assigned by your ISP.
• Subnet Mask: Defines the network range (usually provided by your ISP).
• Default Gateway: The ISP's gateway IP.
• DNS Servers: Either your ISP's DNS or public DNS like Google (8.8.8.8, 8.8.4.4), . If your router is connected directly to a Fiber Jack, ensure the port connected to the fiber modem is configured for the static IP, while the router itself may still use DHCP internally for LAN devices .

Step 3: Configure LAN and DHCP Settings

• Assign a LAN IP for your router that is within a different subnet than the WAN IP to avoid conflicts.
• Enable DHCP for devices on your local network, or assign static IPs to specific devices if needed for servers or remote access .

Step 4: Set Up Static Routes (Optional)

If you have multiple routers or a complex network, configure static routes to ensure traffic reaches the correct destination. Enter:

• Network Destination: The target network IP.
• Subnet Mask: Usually 255.255.255.0 for a network or 255.255.255.255 for a single device.
• Gateway: The router or device that forwards traffic to the destination.
• Interface: The router interface connected to the network .

Step 5: Save and Test

After entering all settings, save the configuration and reboot the router if necessary. Test connectivity by pinging the gateway or accessing the internet. For static routes, verify by accessing the destination IP directly .

Tips for Fiber Connections

• Ensure the router's firmware is up to date for optimal performance.
• Avoid IP conflicts by keeping static IPs outside the DHCP pool.
• For multiple static IPs, assign one as the gateway and configure remaining devices with static routes pointing to it . By following these steps, your router will consistently use the static IP, providing stable connectivity and easier network management for fiber optic internet.