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Connecting two WiFi routers in one house (WiFi amplification)

Would you like to know how to connect two WiFi routers together? If two network routers are connected, you can use this to amplify the WiFi signal. However, two separate networks can also be networked. How this works is described here.

Connecting two WiFi routers - Nowadays almost every household has a WiFi router. Because this allows the Internet to be used on tablets, smartphones or notebooks. Unfortunately this is especially the case with new houses with good sound insulation (thick walls) or generally ceilings with a large proportion of steel reinforcement WLAN reception on the end devices low. Even if the WiFi signal is amplified and the WiFi router is in an optimal location, it is sometimes not enough.

Connect WLAN router: Several WLAN routers or access points are connected to one another

Then it can WLAN repeating or else the connection of other wireless routers or access points enlarge the WLAN. We will show you what to look out for and which devices are possible and you can use them configure.

Table of Contents

1. Foreword: Possibilities and our starting position

Basically, the WLAN routers that you want to operate at home must both be connected one behind the other. The following diagram shows how the cabling should look like:

  • WLAN router # 1 is directly connected to the 1st TAE or a modem and thus to the Internet.
  • WLAN router # 2 or other routers with WLAN (Access points) will be using the first wireless router (Router # 1) wired.

Connect WLAN router: Several WLAN routers or access points are connected to one another (access point mode)

In our example we are going from the network 192.168.2.x out. At home, you would have to look in the manual or the settings of your router to see which network is currently configured.

All devices must have this networkbelongso that communication with each other is also possible.

The WLAN routers # 2 and # 3 do not necessarily have to be routers, but can also be simple access points that are connected via LAN label.

It is important that only WLAN router # 1 is connected to the Internet via the WAN port.

1.1 Why additional WLAN routers or access points?

WiFi router connect in repeater mode

  • Example 1: Your wireless router is in a room (often utility room) and because of the structural conditions (thick, sound-insulating walls and reinforced concrete ceilings) you do not have a sufficiently strong WiFi signal on the upper floor. By setting up additional access points or WiFi routers on the upper floor, you get a better WiFi signal if you set up a new WiFi router in a strategically better location.
  • Example 2: Do you live with several students in a shared apartment and the shared router is currently in one of the shared rooms? In that case, under certain circumstances, the other students have a worse signal. Set up another WiFi router centrally (e.g. in the common room) so that all residents of the shared apartment have optimal WiFi reception.
  • Example 3: In multi-family houses, due to the steel ceilings, the WLAN signals are poor or non-existent as the distance to the WLAN rounter increases. If you set up additional WLAN routers or access points, you can easily provide WLAN to all residents - for example, by centrally positioning one or more access points on the middle floor.

1.2 Access point mode vs. repeater mode

Connect WLAN router - access point mode

It is basically between two modes distinguish between which WLAN routers can be operated with each other: access point mode and repeater mode. Both modes have their advantages and disadvantages. We would like to introduce these briefly:

Repeater mode

  • without a cable connection between routers
  • simple WLAN repeater for socket possible
  • small increase in range
  • half the bandwidth
  • greater latency

Access point mode

  • better range extension
  • full range
  • lower latency
  • Cable connection required between WLAN routers
We always recommend, whenever possible Access point mode because of the above advantages / disadvantages.

2. Repeater mode: router as WLAN repeater

We'll start with the so-called Repeater mode(also called bridge mode). The WLAN router acts as a repeater here. By repeating the WiFi signal, it amplifies it at another location within range of the first WiFi router.

in the Repeater mode is no cable connection between the routers necessary. The WLAN bridge in the second, third, ... router takes care of transmission and WLAN signal amplification.

WLAN repeater mode: No cable connection - but the WLAN signal of two WLAN routers / access points must overlap by 50%

This variant has the greatest advantage because there is no cable connection between the main router (depends on the internet) and the 2nd device (WLAN router or access point) must be present. But that also includes all the advantages.

  • As the signal from the second router (right) must overlap by at least 50% with that of the main router, the overall range is very limited. It can therefore only be used in practice smaller distances bridge.
  • Besides, the Speed ​​halved: Data must namely from the end device (e.g. smartphone or tablet) to the WLAN repeater, which in turn forwards the data to the main router and to the Internet. So a total of two connecting lines have to be bridged.
  • For player and users of Video streaming is the repeater mode as well not suitable. Because of the increased latency (Duration / delay until a network command is received / sent) there could be stuttering or faltering images.

2.1 How is the repeater mode set?

Set repeater mode on the Fritzbox 7490

  1. The settings are quite easy to make. The (or the) WLAN routers that are to be used as repeaters must be included in the Repeater mode be moved. With some WLAN routers or access points it is also called bridge mode. Therefore, the wireless router must also support the repeater mode.
  2. Then select the WiFi to be amplified out. You may need to enable broadcasting of the SSID on the main router. To do this, open the WiFi settings in your main router and configure them so that the WiFi network name (SSID) is sent.
  3. In the next step you enter the WiFi network key Of your WLAN (Main router) also here. You should note that the WLAN password should be selected to be secure. Especially when you enlarge the WLAN, you should keep it all the more secure.

2.2 WLAN repeater for the socket

Fritz! Wlan Repater 310: Plug in the socket and apply WLAN settings via WPS

The advantage from repeater mode is that no cable connection necessary is. So if you don't necessarily want to tear open walls to lay Cat6 / Cat7 Ethernet cables, you can use the simple method and buy a repeater for the socket.

Such a good and reliable model is e.g. Fritz! WLAN Repeater 310 from AVM. Because the device is simply plugged into the socket. A separate power supply unit is not required. Network devices for the home network

Likewise easy is the WiFi setup: Using the WPS button, the WLAN settings can be exchanged according to the 802.11b / g / n wireless standards.

Show WLAN repeater

3. Access point mode: Better variant for WLAN reinforcement

As mentioned earlier, the Access point mode to to prefer. In contrast to repeater mode, the WiFi signal the wireless router itself do not overlap. Therefore, the WLAN routers can sometimes be used in completely different locations.

It just has to be a usual LAN cable(according to Cat6 or Cat7 specification) to connect between devices can be used. But you can also benefit from the higher (full) WLAN speed.

Enhance the access point mode to the WLAN

As in repeater mode, we have 2 routers in our structure. Router # 1 (Main router) has a connection to the Internet (WAN port). Router # 2 hangs on Ethernet cable on the main router (LAN-to-LAN).

Incidentally, both routers do not have to be from the same manufacturer. Because it is enough if both models support the same WLAN standard.

There Router # 1 connects to the internet, we configure it as Signal source and DHCP server(automatic assignment of IP addresses in the LAN).

The advantage of all the cabling: The WLAN network can be scaled to any size and the access points / WLAN routers can be distributed to all locations in the building. Furthermore there is no halving of the bandwidth. Each client connects to the WiFi router with the best WiFi signal and from there the data is transmitted to the main router via a network cable - with almost no latency.

Since the configuration of the access point mode is a bit trickier, we would like to Step by step help to achieve the goal.

It is important that you do not connect additional wireless routers to router # 1 via the WAN port. Communication is only possible if you connect the routers to one another via the LAN ports.
You don't have the possibility to do a cabling or this is connected with a lot of effort? Then Powerline adapters could be an alternative for you. These are plugged into a socket and send data signals over the power cable. You can then connect an access point or WLAN router to the powerline adapter using a LAN cable.

Devolo dLAN Powerline adapter

3.1 Configuring the WLAN router for access point mode

Step 1: Define the IP addresses of the wireless routers connected to Router # 1.

The IP addresses a.) not the same with an IP address of another device (e.g. televisions, laptops, servers, ...) be in the LAN and b.) only be in the same network. In our case, the WLAN routers must all be in the 192.168.2.X network.

You don't know which IP addresses are free or occupied?
Then open the LAN settings from router # 1. With the Fritzbox you can see e.g. under Home Network-> Home Network Overview-> Network Connections all assigned IP addresses.

We would recommend restricting the DHCP range so that you can assign fixed IP addresses to other permanently installed devices (e.g. NAS server).

  • DHCP server assigns IPv4 addresses from 192.168.2.20 to 192.168.2.200
  • Additional servers and WLAN routers receive fixed IP addresses in the range 192.168.2.201 to 192.168.2.254

Check immediately whether the DHCP server on router # 1 is set correctly and is working correctly.

Step 2: Connect a computer to router # 2 with a network cable. Call up the configuration interface. The default IP address can be found in the user manual.

Deactivate DHCP on the Fritzbox. The option can be found under Home Network-> Home Network Overview-> Network Settings-> IPv4 Addresses

There can only be one DHCP server in a LAN. Because this is router # 1 in our case, the DHCP service must be deactivated for all other WLAN routers in the LAN.

Then assign router # 2 and all other access points / WLAN routers in the network a IP address from the address range 192.168.2.X. Save the IP address settings.

Step 3: In the next step, disable the firewall on router # 2. Router # 1 acts as a firewall through which all Internet data traffic runs.

Most wireless routers have this option under “Security Settings”, “Firewall” or “SPI”. Some manufacturers have wireless routers that already have security functions such as Stateful packet inspection (SPI) are activated.

To more Problem sources to exclude from the outset, you should also, if the function is available, UPnP(Universal Plug and Play) on all routers (except router # 1)deactivate.

4th step:Check You now at router # 2, whether in the past Port forwarding have been established. If this is the case, you should deactivate or delete them. Otherwise it is possible that the communication between routers # 1 and # 2 does not work correctly. 5th step: For the Name resolution is only responsible for router # 1. It is therefore necessary to specify the IP address of router # 1 as the DNS server for all other wireless routers in the network. In our case, the IP address 192.168.2.1 is the DNS server.

3.2 Make WLAN settings

Now we have configured both routers so that they can communicate with each other. The next step is to configure the WLAN. The same WLAN settings that we have provided for you in a checklist apply on all routers / access points in access point mode:

  • Assign the. To all WLAN routers and access points same SSID(WiFi name).
  • Set the same encryption(WPA2-PSK) a.
  • Give this to all devices identical WiFi password.
  • Set the WLAN radio channels to “Auto” or follow the rule of 5: Channel 1, 6 and 11

Set the DNS server on the Fritzbox. Option under Internet-> Access data-> DNS server

Brief explanation of 2.4 GHz radio networks. When using multiple access points, it is ideal to use as different radio channels as possible. Why? Because in this way the radio channels do not influence each other negatively (external influences). Since a router transmits on 5 channels, you should ideally keep a distance of 5 channels between the channels of two access points or routers.

3.3 Example: Configuration of two WLAN routers

Using our example, you can see which configuration should be set for both routers in order to guarantee smooth operation. Depending on the manufacturer and model, the names may differ slightly.

optionRouter # 1
(Main router, e.g. on the ground floor)
Router # 2
(e.g. first floor)
IP address: 192.168.2.1 192.168.2.253
DNS server: Automatically
(Awarded by Internet provider)
192.168.2.1
(Forwarding to router # 1)
DHCP: Activated in the range 192.168.2.20 to 192.168.2.200 Disabled
SSID: WLAN NAME
(identical to router # 2)
WLAN NAME
(identical to router # 1)
W-LAN password: MY PASSWORD
(identical to the password of router # 2)
MY PASSWORD
(identical to the password of router # 1)
Encryption: WPA2-PSK
(identical to router # 2)
WPA2-PSK
(identical to router #a)
Radio channel (2.4 GHz):16
Radio channel (5 GHz):automobileautomobile

For other WLAN routers, make the same settings and simply select a different IP address in the same network (1.168.2.X).

4. Nano WLAN router from TP-Link (WR802N)

Finally, we have a tip for you. Are you looking for a compact WiFi router without complicated setting options? Do you want to increase your WiFi range effectively? In that case we recommend the TP-Link TL-WR802N WLAN nano router.

The model can be operated as an access point, client, router, repeater or bridge with up to 300 Mbit / s. It is compact and ideal for on the go - for example, if you want to use the WLAN router in your home.

You can also use the nano router in a hotel room or conference room, if there only one LAN connection is there and yet it is (with several WLAN clients) want wireless internet access. Another advantage is that the router can be supplied with power via a power supply unit or via USB. The setup is completed within a few minutes.

TP-Link nano WiFi router TL-WR802N

Show WiFi router