Expanding wireless network coverage is often a pressing need in large apartments, multi-story buildings, or offices. The primary router's signal may not reach distant rooms, causing constant connection drops and slow speeds. Using a second router as a repeater or access point is an effective and cost-effective solution that eliminates "dead zones" without running additional cables throughout the entire building.
However, simply connecting a second device to the first does not guarantee stable operation. Incorrect configuration This can lead to IP address conflicts, where devices don't understand which router should be providing them with internet settings. As a result, users will experience constant packet loss or a complete loss of internet access, despite a full signal strength.
In this article, we'll take a detailed look at the two main ways to connect equipment: via a wired connection (the most stable option) and over the air (Wireless Bridge). You'll learn how to correctly change IP address second device, disable unnecessary services and set up seamless roaming for comfortable movement around the premises.
Selecting a connection diagram and preparing equipment
Before configuring interfaces, it's necessary to determine how the devices will be physically connected. There are two main scenarios: a cable connection (Ethernet) and a Wi-Fi connection. The first option is preferred as it provides maximum speed and stability, while the second is used where cable installation is not possible.
To implement a wired circuit, you will need a patch cord of sufficient length. One end of the cable is connected to the port. LAN the main router, and the second one into the port WAN (if using a router diagram) or LAN (If the second router functions as a switch/access point) of the secondary device. It's important to determine the topology in advance, as it determines the sequence of actions in the web interface.
⚠️ Important: Make sure the firmware on both devices is updated to the latest version. Manufacturers frequently release patches that fix security vulnerabilities and improve wireless module stability.
If you choose a wireless connection, the second router must support the mode WDS (Wireless Distribution System) or client mode. Not all budget models can function as a repeater out of the box, so checking the specifications on the manufacturer's official website is a mandatory preparation step.
Reset settings and log in to the administrator interface
Setting up a network from scratch always begins with clearing the secondary router's configuration. This will prevent the inheritance of old settings that could conflict with the current network architecture. To reset, locate the reset button on the device's body. Reset (often recessed into the body) and hold it for 10-15 seconds until the indicators blink simultaneously.
After rebooting, connect your computer to the second router via cable or Wi-Fi, using the information on the sticker on the bottom of the device. In the browser's address bar, enter the default address, most often 192.168.0.1 or 192.168.1.1To log in, use the standard login and password, usually admin/admin.
☑️ Preparing to set up the network
It's important not to mix up the devices during setup. If you connect to the primary router thinking you're setting up a second one, you could disrupt your existing network. It's recommended to disconnect the internet cable from the primary router during setup to avoid IP address confusion.
Changing the IP address of the secondary router
The first critical step is to change the secondary device's local IP address. By default, both routers have the same address (e.g. 192.168.1.1), which will lead to a network conflict. You need to go to the section Network → LAN and change the last digit of the address.
If the address of the main router 192.168.1.1, then the second device should be assigned an address 192.168.1.2 Or any other address in the same subrange that isn't occupied by other devices. After applying the settings, the router will reboot, and you'll need to use the new address to access its interface.
| Parameter | Main router | Secondary router (after configuration) | Comment |
|---|---|---|---|
| IP address | 192.168.1.1 | 192.168.1.2 | Must be in the same subnet |
| Subnet mask | 255.255.255.0 | 255.255.255.0 | Same on all devices |
| DHCP Server | Enabled | Disabled | Critical for LAN-to-LAN design |
| Wi-Fi SSID | Home_Net | Home_Net | For seamless roaming |
Changing your IP address is a fundamental operation. Without a unique IP address for each network node, data transfer between them will become impossible., as the information packets won't know where exactly to go. After changing the address, be sure to reconnect to the router by entering the new IP in your browser.
Configuring a DHCP server to avoid conflicts
Protocol DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to connected devices. There should only be one active DHCP server on the network—usually the primary router, which receives internet from the ISP. If a secondary router also tries to assign addresses, chaos ensues: devices will receive incorrect gateways and be unable to access the internet.
For correct operation in access point mode (LAN-LAN scheme), you need to find the section DHCP Server in the secondary router settings and select the option Disable (Disable). Save the settings. After this, all devices connected to the second router will request an IP address from the main device.
⚠️ Note: Interfaces from different manufacturers (TP-Link, Asus, Zyxel, Keenetic) may call this feature differently. Look for options such as "DHCP Server," "Address Allocation," or "Automatic IP Configuration."
Some modern models have a special "Access Point" mode. If you switch the router to this mode via Operation Mode, it will automatically disable DHCP and change the necessary network settings. This is the easiest way for beginners, without requiring manual adjustments to every parameter.
LAN-WAN Connection Diagram: Creating a Subnet
There is an alternative connection method where the cable from the main router is inserted into the port WAN (Internet) secondary. In this case, the second router creates its own subnet. This is useful if you want to isolate devices connecting to the second router from devices on the primary network (for example, for a guest network or IoT devices).
With this scheme, the secondary router's IP address on the global network will be determined by the primary router, and its own LAN segment should be different. For example, if the primary network 192.168.1.x, then the secondary router in the WAN settings should receive an address automatically, and its local network should be, for example, 192.168.2.1.
Why can't devices see each other in a LAN-WAN setup?
When connecting via the WAN port, NAT (Network Address Translation) is enabled. Devices on the second network can see the internet, but they cannot see printers or media servers connected to the first router, as they are located in different logical segments.
The advantage of a LAN-WAN setup is its simplicity: often, simply connecting a cable and no further configuration is required if DHCP is enabled by default on the second router. However, double NAT (Network Address Translation) can cause problems with online gaming or torrent clients, reducing connection performance.
Setting up a wireless bridge (WDS) without cables
If cable installation is not possible, use WDS technology. Both routers must support this feature. On the primary router, you must set a fixed Wi-Fi channel (e.g., channel 6 for 2.4 GHz), as WDS does not work with automatic channel selection.
On the secondary router in WDS mode, start a network search, select the primary router's SSID, and enter the password. The secondary device will then "receive" the signal and transmit it further. Speeds in this mode may be lower than with a wired connection, especially if a single radio module is used for both reception and transmission.
For maximum efficiency, place the second router within a strong signal range of the first. If it's in a "dead zone," it won't have anything to boost, and endpoint speeds will be extremely low. The optimal location is midway between the primary router and the poor coverage area.
Setting up network names (SSID) and security
To create the effect of a single network, it's recommended to set the same names (SSIDs) and passwords on both routers. This will allow devices to automatically switch between access points depending on signal strength. However, standard Wi-Fi roaming isn't completely seamless: a device may "catch" on to a weak signal from a distant router until the connection is completely lost.
It is important to use the same encryption type (recommended WPA2-PSK or WPA3) and the same password. If one router uses WPA2 and the other uses WPA3, some older devices may not connect at all or may constantly lose the network when moving between coverage areas.
Also, make sure that the broadcast channels don't overlap if the routers are located close to each other. For the 2.4 GHz band, use non-overlapping channels 1, 6, and 11. If the primary router broadcasts on channel 1, it's best to assign the secondary router to channel 6 or 11 to minimize interference.
Frequently Asked Questions (FAQ)
Is it possible to connect routers from different manufacturers, for example, TP-Link and Asus?
Yes, you can. Ethernet and Wi-Fi protocols are standardized. The main thing is to configure IP addresses correctly and disable DHCP on the secondary device. WDS mode also often works across different brands, but in access point mode (LAN-to-LAN), compatibility is always 100%.
Why did the internet disappear on all devices after connecting a second router?
Most likely, there's an IP address conflict. Make sure the LAN port addresses on the primary and secondary routers are different (e.g., 192.168.1.1 and 192.168.1.2). Also, make sure you haven't created a loop by connecting two LAN ports on the same device with cables.
Do I need to configure a second router if I just plug the cable into the WAN port?
If you connect the cable to the WAN port, the second router will operate as a separate network. Internet access will be available automatically if it's set to "Dynamic IP." However, to expand a single network (so that the printer is visible to everyone), it's better to use a LAN-to-LAN setup with DHCP disabled.
Will my internet speed decrease when using a second router?
With a wired connection (LAN-to-LAN), there's virtually no speed loss. Using a wireless bridge (WDS), the speed can drop to 50% of the original, as the radio module is forced to alternate receiving and transmitting data on the same frequency.