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There are cases when you need to connect a second router in series to one already installed and working router. For example, to connect neighbors, or expand the coverage area of ​​a wireless WiFi network. For an inexperienced user, this simple task can be confusing. But in fact, everything is done very simply. There are two options for connecting a second router through an existing router:
- wired
- wireless
Let us consider both methods in detail.

Connect the router to the router using a cable

The wired version, that is, connecting a second router via a network cable, is suitable for any model and is especially convenient at large distances - 50-120 meters. Its meaning is that you include the second router in the LAN port of an existing one, that is, expand its network.
There are two connection schemes:

That is, we connect the WAN port (for some it is signed as the Internet) of the second router with a free LAN port of the first. In this case, on the second device, you need to configure the connection type Dynamic IP (Dynamic IP).

He will have his own LAN, from which the network of the first router will be perfectly visible. But from there the grid of the second router will not be visible.

We will cable the LAN port of the second router to the free LAN port of the first. With this connection method, both routers will be on the same local network and the clients connected to them should see each other without problems. The only caveat is that the IP addresses of the routers can match. The fact is that on most Wi-Fi routers, the default IP address is 192.168.1.1 (on some models, such as D-Link, this address may be: 192.168.0.1). Therefore, you need to go to the web interface of the second router and change the IP address in the LAN settings section of the LAN:

For example, at 192.168.1.2 (it is clear that the first will have 192.168.1.1, respectively).
It is also necessary to disconnect the DHCP server on the second router without fail, otherwise it will turn out that there will be 2 active DHCP servers on the same subnet, which cannot be allowed!

Connecting a second router via WiFi as a repeater

Many modern wireless routers are able to work in repeater mode and support WDS technology. Then the second router can be connected to the first as a repeater to expand the coverage area of ​​the WiFi network. It’s very convenient that you don’t need to change anything on the first device.
You just need to go into the settings of the second router, select the repeater mode (or enable WDS):

After that, select the WiFi of the first router and connect to it. Of course, to connect you need to know the password to its Wai-Fai network and enter it in the settings.
Well that's all. If you haven’t made a mistake anywhere, now the second router is connected to the first and distributes its Wi-Fi network.

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