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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. For example, you might be a local "tyrant" living in a large house with 200 flats, where the Wi-Fi signal doesn't reach every corner. Or you could be managing a big company with 200 employees, requiring a router that can handle many users. Another situation is when you have to place a router in each room due to a high number of devices needing network access.
When it comes to connecting multiple routers, there are two main wired methods: LAN-WAN cascading and LAN-LAN cascading. However, for most commercial use cases, the recommended method is **LAN-WAN cascading**.
Let’s start by understanding how LAN-WAN cascading works. In this setup, the first router (the primary one) connects directly to the second router’s **WAN port** using an Ethernet cable. This makes the second router act as a secondary router, effectively extending the network. The connection is done by plugging a cable from the **LAN port** of the first router into the **WAN port** of the second router.
Here’s how to set it up:
1. Ensure the **primary router** is working and has internet access.
2. Log in to the **management interface** of the **second router**. The default IP address is usually `192.168.1.1`. If not sure, check the back of the router or its manual.
3. Go to **Network Parameters > WAN Port Settings**. Change the **WAN Connection Type** to **Dynamic IP**, then save and restart the router.
4. After restarting, go to **LAN Port Settings** and change the IP address of the second router to a different network segment, such as `192.168.0.1` or `192.168.2.1`. Save and restart again.
5. Log in using the new IP address and configure the **DHCP settings**. Set the address pool to match the new network segment (e.g., `192.168.0.2` to `192.168.0.254`).
Once everything is set, your second router will be connected via LAN-WAN cascading. You can repeat this process to add more routers if needed.
But what if you don’t want to deal with all those cables? That’s where **wireless bridging** comes in. Using WDS (Wireless Distribution System), you can extend your network wirelessly.
In this case, the **first router** is the main one, and the **second router** acts as a wireless bridge. To do this:
1. Log in to the **main router** and note down the **SSID**, **channel**, and **encryption settings**.
2. Log in to the **secondary router** and change its **LAN IP address** to something like `192.168.1.2` to avoid conflicts.
3. Go to **Wireless Settings > Basic Settings**, enable **WDS**, and scan for available networks.
4. Select the **SSID** of the main router, set the same **channel**, and enter the **same encryption details**.
5. Disable the **DHCP server** on the secondary router to prevent IP address conflicts.
After saving and restarting, your second router should now be bridged wirelessly to the first. This method is ideal if you want to avoid running cables.
Some tips:
- Most modern routers support multi-router cascading. Brands like D-Link and TP-Link are great for home or small office setups.
- If you're setting up a large network, consider using switches instead of multiple routers for better performance.
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