Expanding the coverage of a home network often becomes necessary when the standard signal isn't sufficient for the entire home or office. The most effective way to solve this problem is to combine two routers into a single infrastructure. This not only increases the range but also improves connection stability in remote rooms.
There are several proven methods for establishing such a connection: using an Ethernet cable for maximum speed or creating a wireless bridge for flexible placement. The choice of a specific method depends on the room layout, the availability of cables, and the technical specifications of your equipment.
In this article, we'll examine both options in detail, focusing on properly configuring IP addresses and DHCP servers to avoid network conflicts. You'll learn how to turn an old router into a powerful access point and properly distribute traffic between devices.
Choosing a connection scheme: cable or Wi-Fi
Before setting up, you need to decide on the network topology. There are two main options: a wired connection, which provides maximum throughput, and a wireless connection, which eliminates the need to run cables throughout the apartment.
The wired method, often referred to as LAN-to-LAN or LAN-to-WAN, guarantees stable speeds, unaffected by interference and wall thickness. It's an ideal choice for permanent installations where twisted pair cabling can be installed discreetly. In this case, the second router functions as a Wi-Fi switch.
Wireless mode, or WDS Bridge / Repeater mode is convenient where cutting grooves in walls is not allowed. However, it's important to keep in mind that the speed in such a network may be lower due to data transmission losses over the air. It's also important that both devices support the standard. WDS or had a client mode function.
⚠️ Important: When choosing a wireless bridge, ensure both routers operate on the same frequency (2.4 GHz or 5 GHz). Mixing frequencies in bridge mode often results in unstable performance or a complete loss of connection.
When choosing a cable, keep its length in mind: standard Category 5e twisted pair cable is limited to 100 meters. Exceeding this distance will result in signal degradation, requiring the use of fiber optics or active network equipment.
Preparatory stage: reset and update
Before attempting complex settings, it's crucial to clean both devices. Conflicts between old settings, saved provider profiles, and non-standard IP addresses can render all efforts useless.
Start with the main router, which is already connected to the internet. Make sure it is assigning IP addresses and that the network connection is working properly. Write down its current IP address (usually 192.168.0.1 or 192.168.1.1) and password from the admin panel.
The second router, which will act as an extender, must be completely reset. Find the button on the device's case. Reset (often recessed into the case), press it with a paperclip for 10-15 seconds until the indicators blink simultaneously. This will restore factory settings.
☑️ Equipment preparation
After the reset, connect your computer to the second router and check if you receive an IP address from it. If the addresses match those of the primary router, a conflict will occur, so changing the IP address of the second device is a mandatory step before merging them.
Method 1: Connecting routers with a cable (LAN-WAN)
This method is the most common and reliable. In this setup, the second router creates its own subnet, acting as a router. A cable is connected from the LAN port of the main device to the WAN (Internet) port of the secondary device.
To begin, connect your computer to the second router and log into its web interface. First, change the local network IP address so that it doesn't match the main router's address. For example, if the main router has the address 192.168.1.1, ask the second one 192.168.1.2 or 192.168.1.254.
Next, you need to configure the WAN connection type. Select Dynamic IP (DHCP). In this mode, the second router will automatically obtain an address from the first device. Make sure the DHCP server on the second router is enabled, but its address pool does not overlap with the first router's address pool if you plan on complex segmentation, although this often works out of the box in cascade mode.
After saving the settings, connect the devices with a cable: port LAN the first router is connected to the port WAN (often blue) of the second one. Computers connected to the second router will now be on a separate subnet but will have internet access through the first one.
Method 2: Access Point Mode (LAN-to-LAN)
More technically correct for a home network is the access point mode (Access Point). In this case, both routers are on the same subnet, the devices see each other, network printers and media servers (DLNA) work.
The setup begins similarly: log into the second router's interface. Find the section LAN and change the IP address to a free one in the network of the first router (for example, 192.168.1.2). After this, it is important to turn off DHCP server on the second device. Only the main router will be responsible for address distribution.
The physical connection in this mode is different: the cable is plugged into the port LAN first router and into the port LAN second. The WAN (Internet) port on the second router remains free. Some modern models have a software switch for the operating mode in Access point mode, which automatically disables DHCP and changes the logic of port operation.
| Parameter | Main router | Second router (Access point) |
|---|---|---|
| IP address | 192.168.1.1 | 192.168.1.2 |
| DHCP server | On | Turned off |
| Connecting the cable | LAN port | LAN port (or WAN, if there is an autoswitch) |
| SSID (Wi-Fi Name) | Home_Wifi | Home_Wifi (for roaming) |
The advantage of this setup is that devices will automatically switch between routers (though not instantly, as in mesh systems). This creates a unified logical network, simplifying file and printing management.
Wireless bridging (WDS)
If cable laying is not possible, the technology is used WDS (Wireless Distribution System). It allows you to connect two routers over the air. The main router distributes Wi-Fi, and the second router receives this signal and distributes it further or transmits it via cable to a PC.
On the main router, you need to set the wireless network channel (e.g., 1, 6, or 11), as WDS doesn't work with automatic channel selection. You also need to enable WDS and add the MAC address of the second router to the list of trusted devices.
On the second router, in the wireless mode settings, select Bridge Mode or WDSLaunch a network search, find the main router's signal, and connect to it by entering the password. It's important that the network names (SSIDs) and passwords match if you want to simulate a single network, but the channels must be exactly the same.
⚠️ Note: Speed in WDS mode may drop to 50% of the nominal value, as the radio module simultaneously receives and transmits data. This method is less preferable for high-speed tasks.
Not all manufacturers support the WDS standard, and equipment from different brands (for example, TP-Link and ASUS) may not communicate with each other via this protocol. In such cases, it's best to use the universal repeater mode (Repeater), if it is supported by the firmware.
Why is WDS often unstable?
The WDS protocol is a non-standard extension. Each vendor implements it differently, adding proprietary headers to data packets. This means that "native" routers from the same brand perform more reliably than a combination of different brands.
Setting up Wi-Fi for seamless roaming
To ensure that two routers are recognized by devices as a single network, the wireless settings must be configured correctly. The key is to have the same network name (SSID) and password on both devices.
However, simply assigning the same name isn't enough. Devices (smartphones, laptops) may lock onto a distant router with a weak signal while ignoring a nearby one. To minimize this effect, it's recommended to separate channels. On the 2.4 GHz frequency, use non-overlapping channels: 1, 6, and 11.
On the first router, set channel 1, and on the second, channel 6 or 11. Transmission power (Tx Power) on the second router can be reduced slightly so that devices switch to the main router more quickly when approaching it.
- 📡 SSID: Network name must be identical (case sensitive).
- 🔐 Safety: The encryption type must be the same (recommended) WPA2-PSK/AES).
- 🔑 Password: The password string must match exactly.
- 📶 Channels: They must be different to avoid interference.
Modern standards 802.11k/v/r (often labeled as Fast Roaming or Mesh in firmware) help devices switch between access points faster. If your routers support these technologies, be sure to enable them.
Common problems and their solutions
During setup, users often encounter typical errors. The most common of these is an IP address conflict. If both routers have the same address 192.168.0.1, the network will not work. Always change the address of the second device before connecting to the first.
Another issue is the lack of internet access on the second router's clients. Check whether DHCP is enabled on the second device (for a LAN-to-WAN setup) or disabled (for a LAN-to-LAN setup). Also, make sure the second router's WAN settings don't contain any old provider settings (PPPoE, L2TP), which could block it from receiving an address from the main router.
If your Wi-Fi speed is slow, check if you are in the Wi-Fi only mode. 802.11b/gSet the mode to mixed mode. b/g/n or ac. Also make sure the channel width is set to 20 MHz for 2.4 GHz (for stability) or 40/80 MHz for 5 GHz (for speed).
⚠️ Note: Settings interfaces may vary depending on the firmware version and manufacturer (Asus, TP-Link, Keenetic, MikroTik). Look for sections titled "Operating Mode," "Operating Mode," or "Network Mode."
In case of complete loss of access to the settings of the second router after merging the network, use the button Reset to return to factory settings and repeat the setup procedure again, connecting to it directly, without connecting to the first router.
Is it possible to connect routers from different manufacturers?
Yes, it is possible to connect routers from different brands (for example, TP-Link and ASUS), but only via a wired connection (LAN-to-LAN or LAN-to-WAN). Wireless bridging (WDS) mode usually requires equipment from the same manufacturer, as the implementation protocols may differ.
Will the internet speed decrease on the second router?
When connected via cable (Cat 5e or higher twisted pair), there is virtually no speed loss. When connected wirelessly (bridge/repeater mode), speed can drop by up to 50% due to the nature of the radio channel operating in half-duplex mode.
Do I need to configure a second router if it will be in another room?
Yes, it's best to perform basic setup (changing the IP address and disabling DHCP for access point mode) by connecting the second router to a computer next to the first. After setup, the configurations are saved, and the device can be moved to the desired location.
What to do if devices cannot see each other on the network?
Check that the second router's built-in firewall isn't blocking local connections. Ensure you're using a LAN-to-LAN configuration with DHCP disabled for the second router so all devices are on the same network segment.