Connecting the wiring of an old router directly to another new router is usually feasible, but it depends on your network setup requirements and connection method. The following are several possible scenarios and corresponding configuration methods: 1. As a secondary router (sub router)
This is the most common usage method, especially when the wireless signal or wired ports of your primary router (which may be the router provided by your ISP or the first router you set up yourself) are insufficient to cover the entire home or office.
-Wired connection: You can connect the LAN port of the old router to the WAN port of the new router. Then, you need to configure the WAN connection type on the new router (which may be dynamic IP, static IP, or PPPoE, depending on your network environment and the settings of the old router).
-Wireless connection (as a bridge or relay): If your new router supports bridge or relay mode, you can wirelessly connect the new router to the network of the old router. This method does not require a physical connection, but may slightly slow down the network speed. 2. Switch mode
If you only want to add wired ports without requiring additional wireless network coverage, you can configure the old router to switch mode.
-Leave the WAN port of the old router idle, or unplug the Ethernet cable from any LAN port of the old router (ensuring it does not affect the existing network).
-Connect all devices that need to be connected to the LAN port of the old router through Ethernet cables.
-Shut down the DHCP server of the old router (which is usually important when the new router is already managing the entire network to avoid IP address conflicts). matters needing attention
-IP address conflict: Ensure that the IP address of the new router is not in the same network segment as the old router (and its management interface), or if you use the old router as a switch, ensure that the DHCP service does not conflict with the existing network.
-Security settings: Set strong passwords and secure wireless network encryption (such as WPA3) for the new router.
-Performance considerations: Using old routers as relays or bridges may slightly slow down network speed, especially if the wireless connection quality between them is poor.
It is feasible to connect the wiring of a router to a new router, but the specific configuration depends on your network requirements and the chosen connection method.