It often happens that after changing internet providers or purchasing a new, modern router, the old device ends up gathering dust on a shelf, even though it's still fully functional. Many users don't even realize that outdated model can be turned into a useful tool for extending the coverage of a wireless network. Instead of throwing away the equipment, it can be used as access point or repeater, significantly improving signal quality in distant rooms.
The process of integrating old equipment into a new infrastructure requires attention to detail in configuring IP addresses and operating modes. The main condition for a successful connection is the absence of DHCP server conflicts between the main and second routers.If you ignore this, devices on the network may stop receiving correct addresses, and the internet will disappear for all devices. In this article, we'll discuss safe and proven methods for connecting devices of different generations.
There are several use cases: creating a wired bridge for stability or setting up a wireless bridge for freedom of movement. The choice of a specific method depends on your device model and the availability of cable runs between rooms. Below, we'll cover each step in detail so you can choose the best option for your situation.
Preparing equipment and resetting settings
Before performing any modifications, you must reset the secondary device to its factory defaults. This is a critical step, as old configurations may contain incorrect DNS data or outdated passwords that will prevent proper operation in the new environment. Locate the button on the device's case. Reset, it is usually recessed into the case, and press it with a paper clip for 10-15 seconds until the indicators blink simultaneously.
After the reset, connect your computer to the old router using a LAN cable, plugging it into any available port other than the WAN port (unless you plan to use it as the input port). Now you need to find the device's IP address to access the control panel. Check the sticker on the bottom of the case: it indicates the default address, often this is 192.168.0.1 or 192.168.1.1, as well as login and password for authorization.
Once you've logged into the web interface, make sure you're seeing the standard welcome page and not your provider's saved settings. If the interface is in a foreign language, look for the toggle in the upper-right corner or in the menu. System ToolsAt this stage, it's important to remember your current IP address, as we'll be changing it later to avoid conflicts with the main router.
☑️ Preparing the router for reconfiguration
Changing your IP address to avoid conflicts
The most common mistake when connecting a second router is having the same IP address on both devices on the same network. If your primary router distributes addresses in the range 192.168.1.x, then the second one needs to be assigned an address from the same subnet, but outside the DHCP range of the main device. For example, if the main router has the address 192.168.1.1, ask the second one 192.168.1.250.
To change the address, go to the LAN settings section, which may be called Network, LAN or Local area networkEnter the new static address in the IP Address field. After applying the settings, the router will reboot, and you'll need to enter the new address in your browser to access its menu. Don't skip this step, or your network will become unstable.
It's also important to disable the DHCP server on the second device if you're using a LAN port connection. Only the main router should be responsible for address distribution. Find the appropriate option in the menu. DHCP Server and select the option Disable or Disable. This will turn the old device into a simple Wi-Fi switch.
⚠️ Note: After changing your router's IP address, your computer may lose connection to it. Simply re-enter the new address in your browser's address bar to continue setup. The old address will no longer be valid.
Setting up a wireless network and security
Now you need to configure the radio module parameters. Go to the section Wireless or Wireless mode. Here you need to set the network name (SSID). You can name it the same as your main network to create a unified space (roaming will work only slightly), or give it a unique name, for example, by adding the suffix "_Ext" to identify which access point you're connected to.
Pay special attention to security settings. Select the encryption type. WPA2-PSK or WPA3, if the device supports more modern standards. Using legacy encryption WEP It's strongly discouraged to use a password on an open network, as this makes your data vulnerable to interception. Create a complex password that contains both letters and numbers.
In the channel settings (Channel) it is better to select the value Autoso that the router automatically selects the least congested frequency band. However, if you notice interference, you can manually set a channel different from the main router's channel (for example, 1, 6, and 11 for the 2.4 GHz band) so that they don't interfere with each other.
Connection diagram via LAN cable (Access point mode)
The most stable way to use an old router is to connect it to the main device via a cable. You'll need a twisted pair cable, crimped at both ends. Plug one end of the cable into the LAN port of the main router, and the other end into the LAN port of the old router (assuming DHCP is disabled on it, as described above). If DHCP is not disabled, the cable should be plugged into the WAN port, but this requires setting the connection type to "Dynamic IP."
Let's consider the scenario with DHCP disabled and connected to a LAN port. In this case, the old router functions as switch with Wi-Fi antennas. All devices connected to it will receive IP addresses from the main router and be on the same subnet. This allows you to open files on computers connected to different devices and use shared printers.
To test functionality, connect your smartphone to the new access point. If internet is available and the speed meets expectations, the setup was successful. A cable connection ensures minimal speed loss and no lag, which is critical for online gaming or watching 4K video.
| Parameter | Main router | Old router (AP mode) |
|---|---|---|
| IP address | 192.168.1.1 | 192.168.1.250 (static) |
| DHCP Server | On | Turned off |
| Connecting the cable | Any LAN port | Any LAN port |
| SSID (Wi-Fi Name) | Home_WiFi | Home_WiFi_Ext |
Setting up a wireless bridge (Repeater mode)
If running a cable isn't possible, you can try setting up your old router in repeater or bridge mode (WDS Bridge). This feature allows the device to receive and transmit a wireless signal over the air. However, it's important to note that not all older models support this mode, and those that do may not work reliably with routers from other manufacturers.
To configure, find the item in the menu Wireless Mode or Opening hours and select Repeater or BridgeAfter this, the device will prompt you to scan for available networks. Select your primary network from the list and enter its password. The old router will attempt to connect to the primary network and continue broadcasting the signal.
When using a wireless bridge, internet speeds for clients connected to the second router can drop by 50% or more, as the radio channel operates in half-duplex mode (it receives and transmits alternately). Furthermore, latency (ping) will increase, which can be noticeable in games.
Why does the repeater cut the speed?
In repeater mode, the radio module is forced to split its time between receiving data from the main router and transmitting it to the client. Essentially, the channel operates twice as slowly, as it can't listen and talk simultaneously.
⚠️ Note: WDS (Wireless Distribution System) mode often requires both routers to be the same model or at least from the same manufacturer. Mixing routers (for example, TP-Link and ASUS) may prevent the wireless bridge from working.
Troubleshooting and speed testing
After completing the setup, you need to ensure everything is working correctly. Connect your laptop or smartphone to the old router's network and run a speed test, such as using Speedtest. Compare the results with the test results from the main router. The acceptable speed drop for a cable connection is no more than 10%, while for a wireless bridge, it can be up to 50-60%.
If devices aren't receiving IP addresses or don't have internet access, check the logs on the primary router. The MAC address of the old device may be blocked or filtered. Also, make sure the gateway and DNS addresses are configured automatically on client devices. In rare cases, updating the firmware of the old router to the latest available version may help.
Pay attention to equipment heating. Older models can run hotter than modern counterparts under constant load. Ensure good ventilation and avoid placing the router on soft surfaces or in direct sunlight. Overheating can lead to intermittent connection loss and the need for a reboot.
Frequently Asked Questions
Is it possible to connect two routers from different manufacturers via Wi-Fi?
Technically, this is possible using WDS mode, but in practice, compatibility is rarely ensured. Range extension protocols are often proprietary. It's more reliable to use Client Mode, if supported by the firmware, or to extend the cable.
Will IPTV work through a second router?
Yes, if you're using a LAN cable connection and have disabled DHCP on the second device, multicast traffic will pass through it transparently. IPTV will likely not work or will be very slow in wireless repeater mode.
Do I need to update the firmware of my old router?
This is recommended, but not required, if the device is stable. An update may add support for new encryption standards or fix security bugs, but on very old models, the new firmware may actually slow things down.
Why can't my computer see files on a network drive through a second router?
You most likely haven't disabled DHCP on the second router or connected a cable to the WAN port, creating two different subnets. Make sure all devices are on the same network (e.g., 192.168.1.x) and have the same subnet mask.