FRITZ!Box 4040 Service - Knowledge Base

FRITZ!Box 4040 Service

Connecting two FRITZ!Boxes with a network cable

If you already have a FRITZ!Box, you can use a network cable to connect another FRITZ!Box to it and configure the second FRITZ!Box so that it shares the first FRITZ!Box's Internet connection (operation as IP client).

This way computers, smartphones, and other devices connected to the FRITZ!Box (IP client) are completely integrated into your home network. These devices can then access the Internet as well as other devices in the home network, and they can use all of the functions offered by the FRITZ!Box (router) connected to the Internet.

Important:The instructions for configuring the FRITZ!Box (router) apply to the FRITZ!Box that establishes the Internet connection.

Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.

1 Preparations

Determining the throughput of the Internet connection of the FRITZ!Box (router)

  1. Click "Internet" in the user interface of the FRITZ!Box (router).
  2. If you are using a FRITZ!Box DSL, click "DSL Information" in the "Internet" menu and then "DSL".
    • If you are using a FRITZ!Box Cable, click "Cable Information" in the "Internet" menu and then "Overview".
    • If you are using a FRITZ!Box LTE, click "LTE Information" in the "Internet" menu and then "Mobile".
  3. Check which throughput (speed) is displayed for the downstream (receive direction) and upstream (send direction) of your Internet connection.

Enabling the DHCP server of the FRITZ!Box (router)

The FRITZ!Box is configured as a DHCP server in the factory settings. If you disabled the DHCP server of the FRITZ!Box connected to the Internet, configure the following settings:

  1. Click "Home Network" in the user interface of the FRITZ!Box (router).
  2. Click "Network" or "Home Network Overview" in the "Home Network" menu.
  3. Click on the "Network Settings" tab.
  4. Click the "IPv4 Addresses" or "IP Addresses" button.
  5. Enable the DHCP server and define the range from which the FRITZ!Box assigns IP addresses.

    Note:The FRITZ!Box has the IP address 192.168.178.1 (subnet mask 255.255.255.0) and assigns IP addresses from xxx.20 to xxx.200 in the factory settings.

  6. Click "OK" to save the settings.

2 Setting up the FRITZ!Box (IP client)

Connecting the computer with the FRITZ!Box (IP client)

  1. If the computer is already connected with the FRITZ!Box (router), disconnect it from or clear the connection between it and the FRITZ!Box (router).
  2. Either use a network cable or wireless LAN to connect the computer to the FRITZ!Box (IP client).

Configuring the operating mode in the FRITZ!Box (IP client)

  1. Open the FRITZ!Box user interface (IP client).
  2. Enter the FRITZ!Box password printed on the sticker on the underside of the device and click "Log In".
  3. Click "Internet" and then "Account Information".
  4. Select "Internet router as IP client" from the drop-down list "Internet connection via".
  5. Enter the data throughput of your Internet connection in the "Downstream" and "Upstream" fields.

    Example:
    Enter 50000 for a downstream of 50 Mbit/s; enter 5000 for an upstream of 5 Mbit/s.

  6. Click "Apply" to save the settings.

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

Important:In this operating mode, you can no longer open the user interface with http://fritz.box. Instead, proceed as described in the section "Opening the FRITZ!Box user interface" (see below).

Connecting the computer with the FRITZ!Box (router)

The following step is only necessary if the computer was previously connected with the FRITZ!Box (router) and you would like to re-connect it:

  1. Clear the connection between the computer and the FRITZ!Box (IP client).
  2. Either use a network cable or wireless LAN to connect the computer to the FRITZ!Box (router).

3 Connecting the FRITZ!Box (IP client) with the home network

  • Use a network cable to connect the "WAN" port on the FRITZ!Box (IP client) either directly to the FRITZ!Box (router), or by means of a hub or switch. You can use the white network cable supplied with the FRITZ!Box, for example.

Now the FRITZ!Box (IP client) uses the Internet connection of the FRITZ!Box (router).

4 Opening the FRITZ!Box user interface

Opening the user interface of the FRITZ!Box (router)

  • Enter fritz.box in the address bar of the web browser.

Opening the user interface of the FRITZ!Box (IP client)

  1. Click "Home Network" in the user interface of the FRITZ!Box (router).
  2. Click "Home Network Overview" in the "Home Network" menu.
  3. Click on the link for the FRITZ!Box (IP client).

    Note:You can also use the IP address that the FRITZ!Box (IP client) obtained from the FRITZ!Box (router), for example 192.168.178.25, to open the user interface. The IP address can be found in the FRITZ!Box (router) under "Home Network > Network > Network Connections".

5 Setting up the FRITZ!Box (IP client) for wireless roaming

You can use the FRITZ!Box (IP client) as an additional wireless access point. This way your wireless devices can access the Internet and other devices in the home network over the FRITZ!Box (IP client), even if the wireless network of the FRITZ!Box (router) is not available.

Configure the following settings in the FRITZ!Box (IP client) so that your wireless devices always automatically connect to the FRITZ!Box with the strongest signal (wireless roaming):

  1. Click "Wireless" ("WLAN") in the user interface of the FRITZ!Box (IP client).
  2. Click "Radio Network" in the "Wireless" ("WLAN") menu.
  3. Enter the wireless network name of the FRITZ!Box (router) in the field "Name of the wireless radio network (SSID)".
  4. Click "Apply" to save the settings.
  5. If you disabled automatic channel selection in the FRITZ!Box (router) and set a wireless channel, set the same channel in the FRITZ!Box (IP client):
    1. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
    2. Enable the option "Adjust radio channel settings" in the "Radio Channel Settings" section.
    3. Select the channel used by the FRITZ!Box (router) from the drop-down list "Radio channel".
    4. Click "Apply" to save the settings.
  6. Click "Security" in the "Wireless" ("WLAN") menu.
  7. Enable the option "WPA encryption".
  8. Select "WPA2 (CCMP)" for the "WPA mode".

    Note:If not all of your wireless devices support WPA2 encryption, you can use the WPA mode "WPA + WPA2". If you select this setting, wireless devices will automatically use the safest WPA mode for wireless connections.

  9. Enter the network key of the FRITZ!Box (router) in the "Network key" field.
  10. Click "Apply" to save the settings.