Often, owners of apartments with large areas or complex layouts face the problem of internet from the provider Rostelecom It works great, but the Wi-Fi signal doesn't reach distant rooms. The standard equipment provided by the provider is usually sufficient for a one-bedroom apartment, but in a three-room apartment or a two-story building, "dead zones" begin to appear, where pages don't load and video cuts out.
The solution to this problem is to use an additional router, for example, a popular brand TP-LinkInstead of purchasing expensive mesh systems, you can intelligently connect your provider's main router and an additional one. TP-Link router, turning the latter into a powerful access point. This allows you to expand your wireless network coverage and ensure a stable signal throughout your home.
This article describes in detail the process of setting up a network connection. We'll discuss how to avoid IP address conflicts, properly distribute channels, and set up a unified network for seamless device roaming. You'll learn which cable to use and the order in which to perform actions in the web interface.
Selecting a connection diagram and preparing equipment
Before accessing the settings, you need to physically connect the devices. There are two main connection methods: cable (LAN-to-LAN or LAN-to-WAN) and Wi-Fi (repeater mode). For maximum speed and stability, a wired connection is recommended, as it doesn't cut speed in half, as is often the case with wireless extensions.
You'll need a patch cord (network cable). It should be long enough to reach from the main router. Rostelecom to the place of installation of the new one TP-LinkIf you plan to use the second router specifically as an access point, it's important to understand the difference between ports. The primary device assigns IP addresses, while the secondary device only broadcasts the signal.
Prepare both devices for use: connect them to a power source and wait for them to boot up (usually 1-2 minutes, until the system lights stop flashing). Also, make sure you have access to a computer or smartphone to configure the settings.
⚠️ Attention: Router interfaces Rostelecom (Sagemcom, Sercomm, Eltex) and TP-Link Menu items may vary depending on the year of manufacture and firmware version. The layout of menu items may vary, but the logic remains the same.
Setting up the main Rostelecom router
The first step is to check your default gateway settings. You need to make sure it's enabled on your provider's router. DHCP serverIt automatically assigns IP addresses to all connected devices. If you disable this function on the main router, the entire network will lose internet access.
Go to the settings of the main router (usually at 192.168.1.1 or 192.168.0.1) and find the section Local area network or LANWrite down or remember the device's IP address; you'll need it in the next step. Also, check the DHCP address range to see which IP addresses are available.
It's recommended to lock down the IP address of the primary router, as when connecting a second device, its address will need to be changed to avoid conflicts. If both routers have the address 192.168.1.1, the network will not work.
Make sure you know the password for your main router's Wi-Fi network if you plan to set up a wireless connection between devices in the future, although a cable is preferable.
Changing the IP address on a TP-Link router
Now let's move on to the setup TP-LinkDon't connect it to the router with a cable yet. RostelecomConnect to a Wi-Fi network TP-Link (or via a LAN cable to a computer) and log into the web interface. The login address is often indicated on a sticker on the bottom of the case, usually this is tplinkwifi.net or 192.168.0.1.
The first step is to change the secondary router's local network IP address. It should be in the same subnet as the primary router, but not the same. For example, if the primary router Rostelecom has the address 192.168.1.1, then TP-Link you need to set the address 192.168.1.2 or 192.168.1.254.
To do this, go to the menu Net (Network) -> LANEnter the new value in the IP address field. After saving the settings, the router will reboot, and you'll need to log in to its interface using the new address.
☑️ IP addressing check
This procedure is critical. If the addresses match, a conflict will occur, and one of the devices will stop responding. Changing the address allows the system to recognize that these are different nodes on the same network.
Disabling the DHCP server on TP-Link
The most important step in creating a unified network is disabling IP address sharing on the secondary device. Your setup should only have one "sharing" device—the provider's router. TP-Link will also start distributing addresses, devices will receive incorrect gateway data and lose Internet access.
In the interface TP-Link (by new IP address) find the section DHCP or DHCP settings. Select an option Disable (Disable) or uncheck "Enable DHCP server." Save the changes.
After that the router TP-Link It turns into a simple access point and switch. It will forward all IP address requests from connected clients to the main router. Rostelecom.
⚠️ Warning: After disabling DHCP and saving the settings, you may lose connection to the router TP-LinkIf your computer receives an address from the main router, and you try to log in using the old IP address, connect the cable only to the LAN ports.
The device is now ready for physical connection to the main network. Make sure the settings are saved, and you can proceed with switching.
Physical connection and Wi-Fi setup
Take a network cable. Plug one end into any available port. LAN on the router Rostelecom. Connect the other end to the port. LAN on the router TP-Link. WAN (Internet) port on TP-Link There is no need to use it in this circuit unless you are setting up a complex NAT cascade, which is excessive for home signal amplification.
After connecting the cable, the LAN port indicators should light up or blink. Now let's set up the wireless network. Go to the section Wireless mode (Wireless). Set the network name (SSID). For user convenience, it's best to name it the same as your main network but add "_EXT" or leave the same name for pseudo-roaming.
It's important to configure broadcast channels. If the primary router operates on channel 1, it's best to select channel 6 or 11 for the secondary router to prevent them from overlapping and interfering with each other. This is especially important in apartment buildings.
Set the same encryption type (usually WPA2-PSK) and password as your main router if you want devices to switch automatically. While true seamless roaming (802.11r/k/v) requires support from both devices, using the same password will make things easier for both devices.
Comparison table of operating modes and ports
To avoid confusion when connecting cables, let's organize port information. Incorrectly connecting a cable to a WAN port can create an isolated subnet where devices cannot see each other.
The table below shows the main differences in connections for different purposes. For our purpose—signal amplification—only the first row is suitable.
| Opening hours | Where to insert the cable from the main router | DHCP status on TP-Link | Result |
|---|---|---|---|
| Access point (amplification) | LAN port | Disabled | One network, everyone can see each other |
| Cascade (two routers) | WAN (Internet) port | On | Two different networks, double NAT |
| Repeater mode (without cable) | Without cable | Disabled (automatically) | Air expansion, loss of speed |
Use the LAN port on both devices to create a transparent bridge. In this case, TP-Link It simply acts as a switch with antennas. All devices connected to it will be on the same subnet as the main router's devices.
Diagnostics and troubleshooting
After setup, check the network. Connect your smartphone to a Wi-Fi network within range. TP-LinkCheck if the IP address is assigned within the range of the main router. If the address begins with 169.254.xx, DHCP is not working or the cable is damaged.
If you have internet but the speed is slow, check the cable quality. Gigabit speeds require all eight wires in the cable. Also, make sure the routers aren't positioned close to each other or near microwaves, which can cause interference.
In some cases, your computer's antivirus or Windows Firewall may be blocking access to settings. Try temporarily disabling them for diagnostic purposes. A reset may also help. TP-Link to factory settings using the Reset button and repeat the procedure.
What should I do if I can't access TP-Link settings after changing my IP address?
If you've changed your router's IP address but your computer can't open the settings page, try manually entering a static IP address on your computer's network card in the same subnet (e.g., 192.168.1.50), clearing the DNS cache with the ipconfig /flushdns command, or using incognito mode in your browser.
Regularly check the temperature of the devices. When active, two routers can become hot, leading to instability. Ensure they are well-ventilated.
Is it possible to connect routers via Wi-Fi without a cable?
Yes, this is called WDS Bridge or Repeater mode. However, in this case, the internet speed on the second router will drop by at least half, since it receives and transmits data over the same channel. A cable connection is always preferable.
Do I need to reset my Wi-Fi password on TP-Link?
This isn't required, but it's recommended. If you want your phone to automatically switch between routers, the network name (SSID) and password must match. If the names are different, you'll have to manually select the network from the list of available ones.
Why did the internet disappear on all devices after connecting TP-Link?
Most likely, there's an IP address conflict. Make sure you changed the LAN IP on the secondary router before connecting the cable and disabled its DHCP server. Two devices with the same IP address will not work on the same network.
Will any cable be suitable for connecting routers?
For speeds up to 100 Mbps, four wires are sufficient, but modern plans and gigabit ports require a Cat5e or higher cable, which utilizes all eight wires. The cable length should not exceed 100 meters.