Using an old or additional router to extend your wireless network coverage is a proven way to improve connection quality in remote rooms or at your dacha. Model DIR-300 NRU from the company D-LinkDespite its age, it still successfully functions as an access point if the main router lacks powerful antennas or operates on a different standard. You don't need to buy expensive equipment if you can intelligently configure your existing resources.
The essence of the method is to transform DIR-300 NRU From a standalone router to a simple switch with Wi-Fi hotspot functionality. In this scenario, all devices on your local network will receive IP addresses from the main router while on the same subnet, allowing access to shared folders and printers. Following the correct sequence will avoid address conflicts and connection interruptions.
Before beginning software configuration, you need to prepare the physical infrastructure. Make sure the cable from your ISP or main router is working properly and the LAN port on your computer is functioning correctly. It is important to understand, that it is best to perform the setup using a direct wired connection to avoid signal loss when changing wireless network settings.
Preparing equipment and resetting settings
The first step before starting the configuration is to perform a full reset of the secondary router. DIR-300 NRU to factory defaults. This is necessary to eliminate the influence of old routing rules or conflicting IP addresses that may have been left over from the previous owner or provider. To do this, locate the recessed hole marked Reset.
Plug in the router and wait for it to finish booting (the lights should be steady). Use a paperclip or thin object to press and hold the reset button for 10-15 seconds until the lights flash simultaneously. After this, the device will reboot, and you'll be able to connect to it using the default settings.
- 🔌 Connect your computer to any port
LAN(yellow) on DIR-300 NRU patch cord. - ⚡ Make sure your PC's network card is configured to obtain an IP address automatically.
- 📶 Turn off Wi-Fi on your computer to ensure a wired connection during setup.
- 🔄 Check the indicators: the indicator for the connection to the port into which the cable is plugged should be on or blinking.
Once physically connected, open any browser and enter the device's default address in the address bar. Typically, for equipment D-Link This 192.168.0.1 or 192.168.1.1If the page does not open, check your TCP/IP settings or try resetting again by holding the button a little longer.
Initial interface setup and IP address change
After logging into the web interface, the system may request a login and password. This is the default for most firmware versions. DIR-300 NRU login is used admin, and the password field remains blank. If this information doesn't match, the reset may have been unsuccessful, and you'll need to repeat the procedure. After logging in, you'll see the control panel, the interface of which may differ depending on the firmware version.
The most critical step is changing the IP address of the router itself. DIR-300 NRUThe thing is that the main router is most likely already using the address 192.168.0.1 or 192.168.1.1Leaving the secondary device's address the same will cause a conflict and the network will stop working. You need to change the secondary router's address so that it's in the same subnet as the primary router, but not the same.
⚠️ Note: If your primary router has the address 192.168.0.1, then the DIR-300 NRU needs to be assigned the address 192.168.0.2 or 192.168.0.254. If the primary router is 192.168.1.1, then assign 192.168.1.2 to the secondary router.
To change the address, go to the menu Setup (Settings) -> Network Settings (Network settings) or LANFind the field IP Address and enter the new static address there. Leave the subnet mask unchanged, usually it's 255.255.255.0After applying the settings, the router will ask you to reboot, and to continue managing it, you'll need to enter the new address in your browser.
☑️ Check network settings
Setting up a wireless Wi-Fi network
Now that the network address has been changed, you need to configure the wireless settings. Go to the section Wireless Settings (Wireless Network). Here you can set the network name (SSID) and security settings. You can name the network the same as your main one for seamless roaming (although full roaming without a controller won't work; devices will switch automatically), or give it a unique name to identify which access point you're connected to.
In the security section, select the encryption type WPA2-PSKThis is the most reliable and compatible standard for home use. In the field Pre-Shared Key (Security Key) Create and enter a complex password consisting of letters and numbers. Avoid using simple combinations or birthdays, as this weakens the security of your local network.
Pay attention to your wireless network channel. If you're in an apartment building, the airwaves may be heavily polluted by neighboring routers. DIR-300 NRU supports operation in the 2.4 GHz band. It is recommended to select channels 1, 6, or 11, as they do not overlap, or leave the mode Auto, if the firmware can select the least loaded channel.
- 📡SSID: The name of your network that will be visible when searching for Wi-Fi.
- 🔒Security Mode: Be sure to select WPA2-Personal (AES).
- 🔑Password: Password must be at least 8 characters long.
- 📶Channel Width: 20 MHz channel width provides a more stable signal in noisy conditions.
Disabling the DHCP server
This is perhaps the most important technical point in the entire manual. In access point mode DIR-300 NRU The router shouldn't distribute IP addresses to connected devices. This function should only be performed by the primary router. If DHCP servers are running on both devices, the network will be in chaos: devices will receive incorrect gateway addresses and won't be able to access the internet.
Find the section in the menu Network Settings or LAN, where the DHCP settings are located. You need to uncheck the box Enable DHCP Server (Enable DHCP server). After saving this setting, the router will stop issuing addresses, and all client requests will go directly to the main router.
After disabling the DHCP server and saving the settings, the router DIR-300 NRU It will ask you to reboot again. After rebooting, a computer connected via cable may lose connection because it no longer automatically receives an address from the router. This is normal. You will need to either reconnect the cable, temporarily assign a static IP address to the computer for further testing, or proceed directly to the final connection.
⚠️ Warning: If you forget to disable DHCP on the secondary router, devices on the network may randomly disconnect from the Internet or stop seeing the network altogether.
Physical connection and operation check
At this stage, software configuration DIR-300 NRU Complete. Now you need to connect the devices correctly with a cable. Take a patch cord (Ethernet cable). Connect one end to any available port. LAN (yellow) on the main router. Connect the other end to the port as well. LAN (yellow) on configured DIR-300 NRU.
The WAN port (blue or red) on the secondary DIR-300 NRU router is not used in this diagram! Connecting a cable to the WAN port will cause the device to attempt to operate as an independent router, creating its own subnet, and devices behind it will not be able to see the main network without a complex forwarding setup.
After connecting with a cable, the LAN port indicators on both devices should light up or blink, indicating a link. Wait about a minute for the devices to exchange packets. Now try connecting your smartphone or laptop via Wi-Fi to the newly created network. If the connection is successful and internet access is available, the setup is working correctly.
| Parameter | Main router | Secondary (DIR-300 NRU) |
|---|---|---|
| Opening hours | Router | Access point (AP) |
| IP address | 192.168.0.1 (example) | 192.168.0.2 (example) |
| DHCP Server | On | Turned off |
| Cable | From the provider | LAN-LAN connection |
What to do if there is no internet access through the secondary router?
Check that the subnet mask matches on both devices. Make sure the cable is working properly. Try assigning a static IP address from the primary network range to your computer and test the ping to the gateway. Also, check if the primary router is blocking new devices by MAC address.
Possible problems and their solutions
During setup, common situations may arise that require intervention. For example, devices may connect to Wi-Fi, but display "No Internet Access." This most often means that DHCP is still enabled. DIR-300 Or the cable is connected to the WAN port. Check these two points first.
Another common problem is low data transfer speed. Model DIR-300 NRU It has Fast Ethernet ports (100 Mbps), so you won't get speeds higher than that, even if your provider's plan allows for higher speeds. Furthermore, older Wi-Fi modules may limit wireless speeds to 54 or 150 Mbps.
If you can't access the secondary router's settings after changing the IP address, make sure your computer is on the same subnet. Temporarily assign a static address to your PC's network card, for example, 192.168.0.50 (if the router has become 192.168.0.2), and try opening the web interface again. After setting it up, set the network settings to "automatic."
- 🚫 Problem: IP address conflict. Solution: Change the secondary router's IP address to a unique one.
- 🚫 Problem: No internet connection on clients. Solution: Disable DHCP on the DIR-300 NRU.
- 🚫 Problem: The settings menu won't open. Solution: Check the gateway IP address and subnet of your PC's network card.
Can the DIR-300 NRU be used to boost the signal over the air (client mode)?
Technically, some firmware versions support client or bridge mode (WDS), but on older models like NRU, this feature is often unstable or absent. A wired connection between routers is more reliable and stable. If cable installation is not possible, modern mesh systems are a better option.
What is the default password for D-Link DIR-300 NRU?
In most versions the password field should be empty and the login should be adminSome new firmware versions or factory-installed devices may have a unique password on a sticker on the bottom of the case, but this is rare for NRU models.
Why is the Wi-Fi speed through the second router lower than through the first?
The DIR-300 NRU model belongs to the N150 class, meaning the theoretical wireless speed is up to 150 Mbps, but in practice, it's around 40-60 Mbps. Furthermore, older antennas and encryption standards may impose their own limitations. Higher speeds require AC or AX equipment.