How to connect two Wi-Fi routers into one network: a complete guide with diagrams

• Go to Wireless Mode → WDS Settings.
• Click Search and select the main router network.
• Enter the Wi-Fi password of the main router.
• In the section LAN Disable the DHCP server.
• Save the settings and reboot the router.

Setting for ASUS:

1. Open Wireless Network → Bridge.
2. Select mode WDS Only or Hybrid (if you need access to the settings of the auxiliary router).
3. Enter the MAC address of the main router (you can find it on a sticker or in Status → Wireless Network).
4. Set up the same SSID, channel, and security type as your main router.

⚠️ Attention: When using WDS, the connection speed between routers will be halved, since one channel is used for receiving and transmitting data simultaneously. For example, if the main router is 300 Mbps, there will be a connection between the routers 150 Mbps.

WDS optimization for stability:

• 📌 Set a fixed channel (not Auto) on both routers.
• 🔄 Reduce Beacon Interval to 50 (by default 100) for fast roaming.
• 📶 Turn off WMM (Wi-Fi Multimedia) if connection interruptions are observed.
How to check WDS support?
If there is no section in the router's web interface WDS or Bridge, check the model specifications on the manufacturer's website. Alternatively, the mode Client or Repeater, but they create a separate subnet.-->
5. Connecting via Client mode (wireless)
If your router does not support WDS, use the mode Client (or Universal RepeaterIn this case, the secondary router connects to the main router as a client, but creates its own Wi-Fi network (you can configure the same SSID for roaming).
Step-by-step instructions
1. Connect to the secondary router via cable.
2. Go to Wireless Mode → Operating Mode (or Operation Mode).
3. Select Client or Universal Repeater.
4. From the list of available networks, select the SSID of the main router and enter the password.
5. In the settings LAN Disable the DHCP server (if you need a single network).
6. Save the settings and reboot the router.
Client mode features:
• ✅ Easier to set up than WDS.
• ✅ Works on most routers, including older models.
• ❌ Creates double NAT, what can interfere:
  • Online games (for example, CS:GO, Dota 2).
  • IP telephony (for example, Zadarma, Mango Office).
  • Access to network drives (NAS) or cameras.
How to avoid double NAT:
1. On the secondary router, disable DHCP.
2. Assign it an IP from the main router's subnet (for example, 192.168.1.2).
3. Connect the router to the main one via the port LAN (Not WAN!).
⚠️ Attention: In mode Client Some router features (such as guest Wi-Fi or parental controls) may not be available. Check the documentation for your model.
6. Cable connection (LAN-to-LAN)
The most reliable and fastest method is to connect routers via Ethernet cable. This is suitable if it's possible to run a cable between the devices (for example, through walls or baseboards).
Requirements:
• Cable twisted pair (categories Cat 5e or higher).
• Cable length up to 100 meters (for longer lengths you need a switch or amplifier).
Step-by-step instructions:
1. On the main router:
   • Leave all settings as default (DHCP enabled).
   • Connect the cable to any port LAN (Not WAN!).
On the auxiliary router:
• Disable DHCP: LAN → DHCP Server → Disable.
• Assign a static IP (eg. 192.168.1.2) in the settings LAN.
• Connect the cable to the port LAN (Not WAN!).
• Set up Wi-Fi with the same SSID and password as your main router (for roaming).
Connection diagrams:
• 🔌 LAN Port → LAN Port - both routers in the same subnet (recommended).
• 🔌 LAN Port → WAN Port — creates double NAT (not desirable).
Advantages of LAN-to-LAN:
• ⚡ Maximum speed (up to 1 Gbps with cable Cat 6).
• 🔄 No signal loss (unlike WDS).
• 🛡️ Stable connection without interference.
How to lay cables discreetly:
• 🏠 Use cable channels or baseboards with a niche for cables.
• 🔌 Lay the cable under the floor covering (linoleum, laminate).
• 🚪 For interior doors use door adapters.
7. Setting up roaming between routers
If you've combined routers with the same SSID, devices (smartphones, laptops) should automatically switch between them depending on signal strength. However, this often doesn't happen due to incorrect settings.
How to ensure seamless roaming:
1. Same Wi-Fi settings:
   • SSID (network name).
   • Password.
   • Security type (WPA2-PSK or WPA3).
   • Channel (fixed, not Auto).
2. Different channels for 2.4 GHz and 5 GHz:
   • For 2.4 GHz select channels 1, 6 or 11 (do not intersect).
   • For 5 GHz use non-DFS channels (eg 36, 40, 44, 48).
Setting the signal strength:
• Reduce the transmit power (Transmit Power) on 70–80%so that devices don't get stuck on a distant router with a weak signal.

Roaming problems and their solutions:

Problem	Cause	Solution
The device does not switch to a nearby router.	The switching threshold is too high	Reduce Roaming Aggressiveness (in firmware DD-WRT or OpenWRT)
Connection breaks when switching	Various security settings	Make sure both routers have the same encryption type (AES or TKIP)
Low speed when roaming	Intersecting channels	Set up channels 1, 6, 11 For 2.4 GHz

Roaming check:

1. Install the application on your smartphone Wi-Fi Analyzer (Android) or AirPort Utility (iOS).
2. Check which router the device is connected to at different points in the apartment.
3. If switching does not occur, reduce the signal strength on the routers.
⚠️ Attention: Some devices (especially older smartphones or printers) don't work well with roaming. In this case, you can use different SSIDs for each router, but you'll have to switch manually.
8. Typical errors and their elimination
Even with proper setup, problems can still arise. Let's look at the most common errors and how to fix them.
1. There is no internet access on the secondary router
• 🔍 Cause: DHCP is disabled on the main router or there is an IP address conflict.
• 🛠️ Solution:
  • Check that DHCP is enabled on the main router.
  • Assign a static IP address to the secondary router from the main router's subnet (e.g. 192.168.1.2).
2. Devices don't see each other on the network
• 🔍 Cause: Different subnets or double NAT.
• 🛠️ Solution:
  • Disable DHCP on the secondary router.
  • Connect routers via ports LAN-LAN, and not LAN-WAN.
3. Low speed between routers
• 🔍 Cause: Channel interference or weak signal (for WDS).
• 🛠️ Solution:
  • Change your Wi-Fi channel to a less busy one (use Wi-Fi Analyzer).
  • Reduce the distance between routers or use a cable.
  • Turn it off WMM And 802.11n/ac in the Wi-Fi settings (if speed is not critical).
4. The router constantly reboots
• 🔍 Cause: IP address conflict or unstable firmware.
• 🛠️ Solution:
  • Update the firmware on both routers.
  • Reset to factory settings and set up again.
  • Check the power supply (it may not have enough power).
5. Access to the secondary router settings is not working.
• 🔍 Cause: The router's IP address conflicts with the main one or DHCP is disabled.
• 🛠️ Solution:
  • Connect to the router via cable.
  • Assign yourself a static IP (eg. 192.168.1.100) and try to log in 192.168.1.2.
  • If it doesn't help, reset the settings using the button Reset.

Problem diagnosis:

1. Check it out ping between routers:

   ping 192.168.1.2

   If packets are lost, the problem is with the connection (cable or Wi-Fi).

2. Look at the router logs (System Tools → Logs) for errors.
3. Disable your firewall or antivirus software on your PC—they may be blocking network traffic.

⚠️ Attention: If you use routers from different manufacturers (for example, TP-Link And ASUS), check the compatibility of WDS or Client modes. Some models do not work together due to different protocol implementations.

FAQ: Frequently Asked Questions

Is it possible to combine routers from different manufacturers?

Yes, but with some reservations:

• For WDS Both routers must support this mode (check the documentation).
• For LAN-to-LAN Compatibility is not important - the main thing is to configure the IP addresses correctly.
• In mode Client There may be problems with roaming due to different protocol implementations.

Routers of the same brand (for example, two) work best ASUS with support AiMesh).

How to check if routers are successfully combined?
Follow these steps:
1. Connect to the secondary router's Wi-Fi.
2. Check your internet access (open the website).
3. Make sure that devices from different subnets can see each other (for example, ping from a laptop to a printer).
4. In the web interface of the main router, look at the list of connected devices (clients from both routers should be displayed).
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