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The topic of today's technology guide is: how to connect two or more routers.
There are several common scenarios where connecting multiple routers becomes necessary. Here are a few examples:
- I'm a local tycoon with a large house that has 200 flats (WiFi signal doesn't reach every corner).
- I'm the boss of a big company with 200 employees (routers need to support a large number of users).
- I have to place a router in each room (many devices require network access).
To connect multiple routers, there are generally two wired methods: LAN-WAN cascading and LAN-LAN cascading. However, for most setups, especially in small to medium environments, **LAN-WAN cascading** is recommended due to its simplicity and effectiveness.
Let’s start by understanding how LAN-WAN cascading works. The first main router connects directly to the WAN port of the second router via an Ethernet cable, allowing the second router to access the internet. In this configuration, the second router functions as a true router. To set it up:
1. Ensure the primary router is connected to the internet.
2. Log in to the management interface of the secondary router (default IP is usually 192.168.1.1).
3. Go to **Network Parameters > WAN Port Settings**.
4. Change the **WAN Port Connection Type** to **Dynamic IP**.
5. Save the settings and restart the router.
Once restarted, the second router will be able to access the internet through the primary one.
Next, you should configure the **LAN settings** of the secondary router to avoid IP conflicts. For example, change the default IP address from 192.168.1.1 to something like 192.168.0.1 or 192.168.2.1. After saving, the router will restart automatically.
After logging back in with the new IP, go to **DHCP Settings** and enable the DHCP server. Set the address pool to match the new network segment (e.g., 192.168.0.2 to 192.168.0.254). This ensures that devices connected to the second router can receive IP addresses properly.
At this point, both routers are successfully connected using LAN-WAN cascading. You can repeat this process to add more routers if needed.
But what if you don’t want to use cables? That’s totally fine! If you prefer a wireless setup, you can use **Wireless Bridge (WDS)** to connect the routers without wires.
Here’s how to do it:
1. Make sure the primary router is configured with a specific **SSID**, **channel**, and **encryption settings**.
2. Log in to the secondary router and change its **LAN IP address** to a different network segment (e.g., 192.168.1.2) to prevent IP conflicts.
3. Restart the router and log in again with the new IP.
4. Go to **Wireless Settings > Basic Settings** and enable **WDS**.
5. Click **Scan** to find the primary router’s SSID.
6. Select the primary router’s SSID, set the same **channel** and **encryption settings**, then click **Connect**.
7. Disable the **DHCP Server** on the secondary router to avoid IP conflicts.
Once done, the two routers will be connected wirelessly, creating a seamless network coverage.
Tips:
- Most modern wireless routers support multi-router cascading. Brands like D-Link and TP-Link are great choices for home or small office use.
- While switches are more efficient for enterprise-level setups, for home use, connecting 2 to N routers via LAN-WAN or WDS is practical and effective.
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