Why Use a Wired Connection for Long Distances?
Extending a network wirelessly over 80 meters is often unreliable due to signal attenuation and interference from walls, furniture, and other electronic devices. A wired connection eliminates these variables by providing a dedicated pathway for data. When you connect two routers via LAN, the second router acts as an access point rather than a standalone gateway. This setup ensures that all devices connected to the secondary router receive the full bandwidth available from your main internet service provider.
The primary advantage of this approach is stability. Unlike wireless repeaters that cut your speed in half by communicating with the main router on the same frequency, a wired LAN connection maintains the original speed and latency characteristics of your network. For an office setting where employees may be conducting video conferences, transferring large files, or using cloud-based applications, this consistency is essential. It also reduces the load on your primary router, allowing it to focus on managing the core network traffic efficiently.
Preparation and Hardware Requirements
Before beginning the installation, you need to gather the necessary hardware. You will require two TP-Link routers, one functioning as the main router and the other as the secondary access point. The most critical component is an Ethernet cable long enough to span the 80-meter distance. Standard Cat5e or Cat6 Ethernet cables support Gigabit speeds up to 100 meters, so they are fully capable of handling this distance without significant signal loss. If you do not have a pre-made cable of this length, you may need to order a custom-cut patch cable or use professional-grade cabling installed through conduits.
Ensure that both routers are powered off before making any physical connections. This prevents potential electrical surges or configuration conflicts during the initial setup phase. Additionally, verify that your main router is properly configured and providing internet access to devices in the primary area. You should also determine the IP address range of your existing network, typically something like 192.168.0.x or 192.168.1.x, as this will dictate how you configure the secondary device to avoid conflicts.
Configuring the Secondary Router
The configuration process involves changing the settings of the secondary router before it is connected to the main network. Start by connecting a computer directly to the secondary TP-Link router using another Ethernet cable. Access the router's admin panel by typing its default IP address into a web browser; common defaults are 192.168.0.1 or 192.168.1.1. Log in with the administrator credentials, which are often found on a label attached to the device.
Once logged in, navigate to the Wireless Settings section. Here, you should set the SSID (network name) and password. You can choose to use the exact same SSID and password as your main router to allow devices to roam seamlessly between the two networks, or you can create a distinct name like "Office_Ext" to manually select which network you prefer. After setting the wireless parameters, proceed to the LAN settings. Change the local IP address of the secondary router to an address within your main network's subnet but outside the DHCP range. For example, if your main router is 192.168.1.1 and its DHCP range starts at 192.168.1.100, set the secondary router to 192.168.1.2.
Next, disable the DHCP server on the secondary router. This is the most crucial step. If both routers try to assign IP addresses, your network will experience conflicts, leading to connectivity issues. By disabling DHCP on the secondary unit, you ensure that only the main router handles IP assignment, maintaining a single, coherent network structure.
Physical Installation and Final Steps
After saving all changes, disconnect the computer from the secondary router. Run the long Ethernet cable from the main router to the location of the secondary router. Connect one end of the cable to a LAN port on the main router and the other end to a LAN port on the secondary router. Do not use the WAN or Internet port on the secondary router for this connection, as that would create a separate sub-network. Once connected, power on the secondary router.
Verify the connection by checking if the wireless lights on the secondary router are active. Test the coverage by connecting a device to the new Wi-Fi network and browsing the internet. You should see full signal strength and normal internet speeds. If you encounter issues, double-check that the DHCP server is indeed disabled and that the IP address does not conflict with other devices on the network.
This setup provides a robust extension of your office network. For more information on connecting routers to PCs or troubleshooting DSL modem issues, you might find related guides helpful, such as Connect Router to PC: Step-by-Step Guide for Network Setup or Troubleshooting DSL Modem and DHCP Out of Range Issues.
Frequently Asked Questions
Can I use the WAN port on the second router?
No, you should always use a LAN port on the secondary router when connecting it to the main router via Ethernet. Using the WAN port creates a double NAT situation, which can cause connectivity problems and prevent devices on the secondary network from accessing resources on the primary network. Always plug the cable into one of the four yellow LAN ports, not the blue WAN port.
Will this setup slow down my internet speed?
No, a wired LAN connection does not inherently slow down your internet speed. In fact, it is much faster and more stable than wireless repeating methods. The only potential bottleneck would be the quality of the Ethernet cable used; however, standard Cat5e or Cat6 cables easily handle Gigabit speeds over 80 meters without degradation.
How do I choose between the same or different Wi-Fi names?
If you want devices to automatically switch to the stronger signal as you move around the office, use the same SSID and password on both routers. However, note that some older devices may not roam smoothly between them. If you prefer manual control or have specific security requirements, use different names like "Office_Main" and "Office_Guest" to clearly distinguish between the two access points.
What happens if I forget to disable DHCP on the second router?
If DHCP is enabled on both routers, they will compete to assign IP addresses to devices on the network. This results in IP conflicts, where devices may receive invalid IP configurations, leading to intermittent connectivity, inability to access the internet, or failure to print to shared network printers. Always ensure DHCP is disabled on the secondary access point.
Can I use a wireless bridge instead of an Ethernet cable?
While wireless bridges exist, they are generally less reliable for an 80-meter distance due to potential interference and signal loss. A wired Ethernet connection provides a dedicated, shielded path for data, ensuring maximum stability and speed. If running a cable is impossible, consider using directional wireless CPEs designed for point-to-point links, but understand that this may introduce latency compared to a wired solution.