Modern operating systems such as Windows 10, have a fairly intelligent algorithm for selecting a network source, but sometimes the user requires forced control over this process. A common situation arises when a laptop or desktop PC automatically connects to a wireless network, ignoring the connected device. Ethernet-cable, which leads to slower or more unstable connections. This is especially true for gamers and those working with large files, where every millisecond of ping time is crucial.
The problem is not so much in the physical connection, but in the logic of the network adapters and their metrics. operating system The device itself decides which interface to use to access the global network, and sometimes this choice is not in favor of a wired connection. Understanding how to manage these settings will ensure you reap the benefits of a stable cable while avoiding interference and radio channel congestion.
In this article, we will look at not only the mechanical connection, but also software methods that will force the computer to prioritize local area network (LAN)You'll learn how to change interface metrics, disable unnecessary adapters, and diagnose potential driver errors. This comprehensive approach will solve even the most challenging problems.
Physical connection and initial diagnostics
The first and most obvious step is to establish a physical connection between your device and the router. You will need a cable like VIT-4 (often simply called twisted pair) with connectors RJ-45 at both ends. One end is inserted into the port LAN on the back of the router, and the other into the corresponding port on the motherboard of your computer or laptop. It's important to make sure you use the correct port. LAN, and not WAN, which is usually intended for the incoming signal from the provider.
After connecting the cable, pay attention to the indicators next to the network port. If they light up or start blinking (usually orange or green), physical contact has been established successfully. LEDs They indicate the presence of a link and data transfer activity. If the lights are off, try replacing the cable or reconnecting it to a different router port, as one of them may be faulty.
βοΈ Checking the physical connection
However, even with the lights on, Windows may continue to use Wi-Fi. The system sees two active connections and selects one based on internal algorithms. It often happens that wireless adapter was already connected before and saved the profile, so the OS prefers not to break the existing connection, even if a faster wired equivalent appears.
Automatic priority of network interfaces
In most cases, manual intervention in Windows 10 settings is not required, since the system prioritizes a wired connection by default. TCP/IP protocol The Ethernet interface is configured so that its metric is typically lower (meaning higher priority) than that of wireless adapters. If you've connected a cable but your internet connection remains on Wi-Fi, it's possible that your system settings have become corrupted or there's a driver conflict.
To check the current status, press the key combination Win + R, enter the command ncpa.cpl and press Enter. The "Network Connections" window will open, where you will see a list of all available adapters. Here, it is important to pay attention to the statuses: "Connected" should be Ethernet, and Wi-Fi can have a status of "Connected" or "Disconnected." If both are active, the system should theoretically allow traffic through the cable.
Sometimes, simply restarting network services helps. Open a command prompt as administrator and enter the command to reset the TCP/IP stack:
netsh int ip resetAfter running the command, you must restart your computer. This will clear the network settings cache and force Windows to re-evaluate connection priorities. Reset settings Often solves problems when the system gets stuck using the wireless interface.
Why is Windows ignoring the cable?
Windows 10 uses automatic interface metrics. If the wireless card driver reports a higher signal quality or if the wired connection is detected as a "Public Network" with restrictions, the priority may shift. Resetting the TCP/IP stack forces a recalculation of these parameters.
Manually setting the interface metrics
If the automation doesn't work, you'll have to intervene manually in the priority selection process. An interface metric is a numerical value that Windows Used to determine the order in which routes are used. The lower the number, the higher the priority. We'll force the minimum metric for a wired adapter and the maximum for a wireless one.
Open the network connections window again through ncpa.cplFind your Ethernet adapter, right-click it and select "Properties." In the list of components, find and select the line Internet Protocol version 4 (TCP/IPv4), then click the "Properties" button. In the window that opens, click "Advanced" in the lower right corner.
At the bottom of the "Advanced IP Settings" window, you'll see a checkbox next to "Automatically assign metrics." Uncheck it and enter the value in the "Interface metric" field. 10This is guaranteed to be a high priority. For the Wi-Fi adapter, follow the same steps, but set the metric, for example, 50 or higher.
After applying the settings, click "OK" in all open windows. The changes take effect immediately; a reboot is usually not required, but it is recommended to completely reset the routing tables. Now your computer will always select the cable connection if it's connected, regardless of the Wi-Fi signal strength.
Managing adapters via Device Manager
A more radical, yet effective method is to software-disable the wireless module when using a cable. This will not only redirect traffic but also free up system resources that radio moduleThis method is especially useful for laptops where you need to save battery life or eliminate radio interference.
To do this, right-click the "Start" button and select "Device Manager." Expand the "Network adapters" branch. Find your wireless adapter in the list (usually contains the words Wireless, Wi-Fi or 802.11). Right-click on it and select "Disable device".
After this, the Wi-Fi icon will disappear from the taskbar, and all traffic will go through the cable. To return to wireless mode, you'll need to go back to the Device Manager and select "Enable Device." This is ideal for stationary workstations where Wi-Fi is used only occasionally.
| Parameter | Wired (Ethernet) | Wireless (Wi-Fi) | Influence on choice |
|---|---|---|---|
| Stability | High | Medium/Low | Cable is preferable for gaming |
| Speed ββ(max) | 1 Gbps - 10 Gbps | Depends on the standard (up to 2.4 Gbps) | The cable maintains speed better. |
| Latency (Ping) | Minimum (1-3 ms) | High (10-50 ms) | Critical for online shooters |
| Noise immunity | Full | Low (neighbors, microwaves) | The cable is not susceptible to noise |
Using the command line for routing
For advanced users who want full control, there is the ability to manage the routing table through the console. Command route allows you to set specific traffic paths. However, in the context of simply switching Wi-Fi to cable, it's more important to ensure the default gateway is set correctly.
Open Command Prompt (cmd) and enter the command route printYou will see a list of interfaces and active routes. Pay attention to the line 0.0.0.0 with a mask 0.0.0.0 β this is the default route. The "Gateway" column should contain your router's IP address, and the "Interface" column should contain the IP address assigned to your network card (Ethernet).
If you see that the default route is routed through the Wi-Fi interface, you can delete it and add a new one, but it's easier to use the reset command described above or change the priority through the GUI. Manually editing the route table requires caution, as an error can lead to complete loss of network access.
β οΈ Attention: When working with a team
routeBe extremely careful. Incorrectly deleting the default route can break the connection to the router, requiring you to reboot your computer or reset your network settings to restore access.
Diagnosis and solution of typical problems
Sometimes, even if the cable is connected and the metrics are set correctly, the internet still doesn't work or works slowly. First, check your network card drivers. Go to the motherboard or laptop manufacturer's website and download the latest driver for LAN controllerOutdated drivers may not handle interrupts correctly or may not support power-saving modes.
It's also worth checking your power settings. In Device Manager, under the network adapter properties, go to the "Power Management" tab. Uncheck "Allow the computer to turn off this device to save power." Windows 10 sometimes mistakenly puts the network card to sleep, thinking it's not being actively used, which leads to connection drops.
If the problem persists, try temporarily disabling your antivirus or firewall. Sometimes third-party security programs block network access through new interfaces, considering them potentially dangerous (for example, public ones). A process of elimination can help identify the software conflict.
β οΈ Attention: Operating system and driver interfaces are subject to update. If the menu paths described differ, use Windows settings search or consult your hardware manufacturer's documentation.
Frequently Asked Questions (FAQ)
Do I need to turn off Wi-Fi manually when connecting a cable?
Ideally, Windows 10 will automatically switch to cable connection, as it has a higher priority. However, if you want to ensure no lag or save battery life on your laptop, manually disabling Wi-Fi is the best solution.
Why is the speed via cable lower than via Wi-Fi?
This is an abnormal situation. Possible causes: a damaged cable (working only at 100 Mbps instead of 1 Gbps), an old router with Fast Ethernet ports (100 Mbps), or incorrect duplex settings in the adapter properties. Check that the adapter settings are set to 1.0 Gbps Full Duplex And Auto Negotiation.
Is it possible to use Wi-Fi and cable at the same time for different tasks?
Yes, this is possible, but it requires complex routing table configuration. For example, you could configure the system so that torrents are downloaded via a cable while the browser uses Wi-Fi. However, for the average user, it's simpler and more reliable to use a single active interface.
How can I find out which interface my traffic is going through right now?
Open Task Manager (Ctrl+Shift+Esc) and go to the Performance tab. This will display graphs for Ethernet and Wi-Fi. The active interface will show real-time activity as you load a page or file.