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Knowledge document #788

Integrating an additional FRITZ!Box into the home network via powerline

You can connect an additional FRITZ!Box over your home's electrical wiring, for example with FRITZ!Powerline, with your FRITZ!Box connected to the fiber optic connection to increase the Wi-Fi range of your home network easily and efficiently.

The internet and telephony services configured in the FRITZ!Box connected to the fiber optic connection (router) are then available to the second FRITZ!Box (IP client) and the devices connected to that FRITZ!Box, such as computers and telephones.

Requirements / Restrictions

  • FRITZ!OS 6 or later is installed on the FRITZ!Box that you want to set up as the Mesh Repeater / IP client.

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

1 Setting up the router

In the factory settings, the FRITZ!Box automatically assigns the correct IP settings to all devices via DHCP. If you disabled the FRITZ!Box's DHCP server, re-enable it:

  1. Click "Home Network" in the FRITZ!Box user interface.
  2. Click "Network" in the "Home Network" menu.
  3. Click on the "Network Settings" tab.
  4. Click "Additional Settings" in the section "LAN Settings" to display all of the settings.
  5. Click the "IPv4 Settings" button.
  6. Enable the DHCP server and define the range from which the FRITZ!Box assigns IP addresses.

    Note:The FRITZ!Box has the IP address (subnet mask and assigns IP addresses from xxx.20 to xxx.200 in the factory settings.

  7. Click "OK" to save the settings.

2 Setting up the IP client


  1. Use Wi-Fi or a network cable to connect a computer to the FRITZ!Box (IP client).
  2. If the computer is already connected to the FRITZ!Box (router), clear that connection.

Configuring the operating mode

  1. Click "Internet" in the user interface of the FRITZ!Box (IP client).
  2. Click "Account Information" in the "Internet" menu.
  3. Select "More internet service providers" from the drop-down list "Internet service provider".
  4. Select "Other internet service provider" from the second drop-down list in the "Internet service provider" section.
  5. Enable the option "Connection to an external modem or router" in the "Connect via" area.
  6. Enable the option "Share existing internet connection in the network" in the section "Operating Mode".
  7. Enter the speeds of your internet connection in the "Downstream" (receive direction) and "Upstream" (send direction) fields.

    Enter 32000 for a downstream of 32 Mbit/s; enter 2000 for an upstream of 2 Mbit/s.

  8. Click "Apply" to save the settings.

The FRITZ!Box is now configured for operation as an IP client.

Note:When the FRITZ!Box is configured as an IP client, it can no longer be reached at; instead, you must use the Mesh Overview of the FRITZ!Box (router) or use the IP address assigned to it by the FRITZ!Box (router).

3 Connecting the IP client with the home network

Here we explain how to connect two FRITZ!Boxes with each other over your home's electrical wiring using FRITZ!Powerline as an example. Refer to the manufacturer of the adapter for information on setting up the other powerline adapter; for example, consult the manual.

  1. Plug the first FRITZ!Powerline adapter into a power outlet near the FRITZ!Box (router).
  2. Use a network cable to connect the first FRITZ!Powerline adapter to a LAN port on the FRITZ!Box (router).
  3. Plug the second FRITZ!Powerline adapter into a power outlet near the FRITZ!Box (IP client).
  4. Use a network cable to connect the second FRITZ!Powerline adapter to the "LAN 1" port on the FRITZ!Box (IP client).
  5. As soon as the "Powerline" LEDs on the FRITZ!Powerline adapters remain lit, the FRITZ!Powerline adapters are connected and the network connection is established.

4 Setting up Mesh

If FRITZ!OS 7 or later is installed on the FRITZ!Box (IP client), you can configure it so that it adopts all of the Wi-Fi settings from the FRITZ!Box (router) and the Wi-Fi networks of both FRITZ!Boxes are then centrally controlled and optimized by the FRITZ!Box (router):

5 Setting up telephony

If you also want to use the telephone numbers configured in the FRITZ!Box (router) with telephones connected to the FRITZ!Box (IP client):

  1. If FRITZ!OS 7 or later is installed on the FRITZ!Box (IP client), set up telephony in the Mesh.