In a modern apartment or country house, situations often arise where the power of a single device is insufficient to provide a stable signal to all rooms. Thick concrete walls, a complex layout, or simply a large area create "dead zones" where the internet is either unavailable or operates with critical errors. The solution is to intelligently connect two routers into a single network.
Company D-Link offers a wide range of equipment that enables various network setups. This can include a wired connection for maximum speed or a wireless connection for flexible deployment. Proper configuration not only boosts the signal but also intelligently distributes the load between clients.
In this article, we will examine the technical nuances of setting up a connection between two routers. D-LinkYou'll learn about the differences between operating modes, IP address assignment features, and methods for resolving equipment conflicts. We'll cover both traditional wired networks and modern wireless coverage extension technologies.
Selecting a suitable equipment connection scheme
Before starting any physical work, you need to determine the topology of your future network. There are two main connection methods: via LAN ports and via a WAN port. The choice depends on the role the second router will play in your infrastructure.
The LAN-to-LAN setup assumes that the second router will act as a switch or access point. In this mode, all devices are on the same subnet, can see each other, and can exchange files. This is ideal for creating a unified namespace.
The LAN-WAN configuration creates a cascade, where the second router creates its own subnet. This is useful if you need to isolate some devices from the main network, such as a guest segment or smart home equipment. However, this configuration can pose challenges with port forwarding and printer access.
⚠️ Please note: When using the LAN-WAN scheme, you get double NAT (Network Address Translation), which can negatively affect online gaming, torrents, and video conferencing.
Cable selection is also important. To connect routers, use category A twisted pair cable. Cat5e or higher if gigabit speeds are required. Old cables Cat5 They will limit the speed to 100 Mbps, which will become a bottleneck for the entire system.
Preparatory work and resetting the settings
Before connecting the second router to the first, it must be restored to its factory default state. This will prevent conflicts due to old settings, incorrect passwords, and reserved IP addresses. Ignoring this step often results in devices being unable to find each other.
To reset, find the hole marked on the back panel ResetPress it with a paperclip and hold the button for about 10-15 seconds until the indicators blink simultaneously. After this, the device will reboot and return to factory settings.
☑️ Preparing a second router
For models D-Link DIR-320, DIR-615 or newer DIR-825 it's often a combination admin/admin or an empty string.
It's best to configure the second router in isolation from the main internet connection. Connect your computer to any LAN port of the device you're configuring and access the web interface using the address provided in the documentation. This is usually 192.168.0.1 or 192.168.1.1.
Setting up a second router in access point mode
Access Point mode is the most stable and recommended way to extend a wired network. In this mode, the second router simply broadcasts the Wi-Fi signal, while the main router handles IP address distribution.
The first step is to change the IP address of the second device so that it doesn't conflict with the main router. If the main router has an address 192.168.0.1, the second one needs to be assigned an address from the same subnet, but outside the DHCP range, for example 192.168.0.2.
Next you should turn off the server DHCP on the second device. This is a critical step: leaving two active DHCP servers on the same network will cause the devices to receive incorrect gateway settings and lose internet access.
Why can't you leave two DHCP servers?
The DHCP protocol doesn't have a busy check mechanism. If two servers appear on the network, they will begin issuing addresses simultaneously. A computer might receive an IP address from the second router, but the default gateway will remain from the first (or vice versa), resulting in complete loss of access to the global network.
Now configure your wireless network settings. It is recommended to set the same SSID (network name) and password, same as on the main router, if you want seamless roaming. However, the Wi-Fi channels should be different to avoid interference.
After saving the settings, connect the LAN port of the main router to the LAN port of the second router. Computers connected to the second device will now receive IP addresses from the main router and have full access to network resources.
Using Repeater Mode
If running cable between floors or rooms isn't possible, a wireless connection can be used. Repeater mode allows a second router to receive the Wi-Fi signal and transmit it further, expanding coverage.
Not all models D-Link support this mode natively. The function is often called WDS (Wireless Distribution System) or Client modeIn modern firmware D-Link a quick setup wizard may be present Wi-Fi Repeat.
To set up, log into the second router's interface, find the wireless network section and select the operating mode. Access point or RepeaterIn the list of available networks that opens, select your primary network and enter its password.
The effectiveness of such a connection depends on the signal quality at the location where the second router is installed. If it's located in an area where the phone barely has a signal, there's no point in extending the connection. Place the extender at the edge of the strong signal.
⚠️ Please note: When using a wireless bridge, the actual connection speed on the second router's clients may drop to 50% of the main channel's speed due to the nature of half-duplex data exchange.
When setting up WDS, ensure that both routers have the same frequency channels and encryption types. Mixed security modes (e.g., WPA/WPA2 mixed) can sometimes cause bridge stability issues.
Cascade connection via WAN port
Connecting via a WAN (Internet) port creates a separate local area network within the main one. It's similar to connecting a regular computer to a router, except the computer is replaced by the entire network of a second router.
In this case, the IP addresses of the subnets should not match. If the main network 192.168.0.x, then the network of the second router should be, for example, 192.168.1.xChange the LAN interface address of the second device in the corresponding settings section.
Connect the cable from the LAN port of the main router to the WAN port (blue) of the second router. In the WAN settings of the second router, select the connection type. Dynamic IP (DHCP)The device will automatically receive an address from the main router and connect to the Internet.
This configuration is useful for isolating devices. However, devices connected to the second router will not be able to see devices connected to the first. Establishing file sharing will require complex static route configuration.
The double NAT created by this setup can interfere with some online services, VoIP, and gaming consoles. If you don't experience issues with specific applications, this method is perfectly viable for simple internet access.
Optimizing wireless coverage and channels
After physically connecting the two routers D-Link It's important to configure the radio modules correctly. The main goal is to minimize interference between devices, especially if they are located relatively close to each other.
There are only three non-overlapping channels available in the 2.4 GHz band: 1, 6, and 11. If the main router is operating on channel 1, the second router must be switched to channel 6 or 11. Automatic channel selection often works incorrectly in static conditions.
The situation is simpler for the 5 GHz band: there are many free channels, and they rarely overlap. However, the 5 GHz signal penetrates walls less effectively, so a second router in this range only makes sense within direct line of sight or in an adjacent room.
Transmitter power can also be adjusted. If the routers are close together, it makes sense to reduce the power to 50-75% to prevent interference. If they are farther apart, set it to maximum.
| Parameter | Main router | Second router (LAN-LAN) | Second router (LAN-WAN) |
|---|---|---|---|
| IP address | 192.168.0.1 | 192.168.0.2 (static) | 192.168.1.1 (another subnet) |
| DHCP Server | On | Turned off | On |
| Connecting the cable | LAN port | LAN port | WAN (Internet) port |
| Access to resources | Full | Full (one network) | Limited (two networks) |
Don't forget to update firmware routers to the latest version. Manufacturer D-Link periodically releases updates that improve wireless connection stability and patch security vulnerabilities.
Frequently Asked Questions (FAQ)
Is it possible to connect D-Link routers of different models?
Yes, model compatibility doesn't matter. You can connect the old one DIR-320 with the new DIR-825The main thing is that both devices support standard Ethernet and Wi-Fi protocols. Settings are configured individually for each device.
Why doesn't the second router distribute internet via Wi-Fi?
Most likely, the security or channel settings don't match. Check that the encryption type (WPA2-PSK) and password on the second router match the settings you configured for client mode, or make sure the cable is connected correctly depending on the selected setup (LAN-to-LAN or LAN-to-WAN).
Do I need a separate password for the second router?
If you've configured a LAN-to-LAN network with the same network name (SSID), devices will switch between routers automatically, and you won't need to enter a separate password. If the network names are different, you'll need to select the new network and enter its password on the client device.
How do I access the second router's settings after connecting?
After setting up and connecting to the shared network, you'll need to know the IP address you assigned to the second router (e.g., 192.168.0.2). Enter this address in your browser to access its management interface. If you forget the address, you'll have to reset it using the Reset button.