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Knowledge Base document #241

Slow LAN connection to the FRITZ!Repeater

The speed of the LAN connection to the FRITZ!Repeater is only 10 or 100 Mbit/s although the device supports LAN connections of 1 Gbit/s or more (gigabit LAN).

Simply proceed as described below. After each measure, check whether the problem is solved.

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

1 Connecting the device directly to the FRITZ!Repeater

This step is only necessary if the device is connected to the FRITZ!Repeater by means of a hub/switch, powerline device, LAN/Wi-Fi converter, or other device instead of being connected directly to the FRITZ!Repeater:

  1. Connect the device directly to a LAN port on the FRITZ!Repeater. If possible, use the network cable included with the FRITZ!Repeater.
  2. If you can establish a gigabit LAN connection to the FRITZ!Repeater now, then the intermediary device or its cabling does not support gigabit LAN:
      1. Make sure that the devices support gigabit LAN.
      2. Update the software / firmware of the devices.
      3. Use different network cables to connect the devices to the FRITZ!Repeater. Use the shortest possible high-quality network cables (CAT 5e or higher).

2 Testing a different cable

The network cable used to connect the device to the FRITZ!Repeater may be too long, incorrectly wired, or defective:

  1. Use the shortest possible high-quality network cable to connect the device to the FRITZ!Repeater, for example the network cable included with the FRITZ!Repeater.

    Note:Any standard network cable CAT 5e or higher (STP, 1:1) with a maximum length of 100 m can be used to connect to the FRITZ!Repeater.

3 Installing the latest software for the device

  1. Install the latest software version for the device or the latest driver for the computer's LAN network adapter.

    Note:Since Windows Update often does not offer the latest drivers, install the drivers from the manufacturer's website, for example from the Intel download pages.

4 Disabling energy-saving functions for the network adapter

  1. If any energy-saving functions are enabled for the computer's LAN network adapter or the device, disable them for testing purposes.

    Note:In Windows, different energy-saving functions can be set for many network adapters under 'Properties > Power Management' in the Device Manager.

5 Disabling EEE (Energy-Efficient Ethernet) in the FRITZ!Repeater

With EEE, network adapters can be put into an energy-saving standby mode, thus also significantly reducing their average energy consumption. Since there may be compatibility issues with individual network adapters when EEE is enabled, disable EEE for testing purposes:

Links 'Help and Info' and then 'FRITZ!Repeater Support'
  1. In the user interface of the FRITZ!Repeater, click on 'Help and Info' on the bottom left of the page and then on 'FRITZ!Repeater Support' at the bottom.
  2. In the 'Energy-Saving Options' section, disable the 'Energy-Efficient Ethernet (EEE) active' option.
  3. Click on 'Apply setting' to save the settings.
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