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This document describes how to set up a VDSL Internet connection for LANCOM routers without an integrated VDSL modem.


You need the current version of LCOS and the current LANtools.
  • A LANCOM router without an integrated DSL modem (e.g. a LANCOM 1781EF+)
  • An external VDSL modem


You have a VDSL connection which you wish to operate with a LANCOM router.


1) Launch the Setup Wizard and select the option Set up Internet access.

2) In this example we set up a new IPv4 connection.

3) Select the setting Ethernet interface (external modem/router) in order to use an external modem.

4) As the first external VDSL modem is connected to the WAN port of the LANCOM router in this example, WAN Ethernet connector must be selected in the following dialog.

5) Select your country.

6) In the subsequent dialog select the option Internet access via PPP over Ethernet.

7) In the next dialog, give the Internet connection a Name.

8) In the dialog that follows, enter the Access data supplied by you provider.

9) You will be prompted for several further settings for Internet access. Select the option VDSL connection... and enter the VLAN tag in the field below for this connection.

VLAN tag 7 is the default for VDSL with most service providers. If you are uncertain, please contact your service provider for more information. The Provider ALICE uses VLAN-Tag 11.

10) You can apply the following default settings without modification. If you wish to use a different time for the daily forced disconnection, change the values in the appropriate fields.

11) In this example, no backup connection is used, so we will retain the default settings.

12) Exit the setup Internet connection wizard with the Finish button. The configured values are then written to the LANCOM router.

13) After the configuration is written to the device, the setup wizard asks whether you want to continue one with another wizard.

Click on No as the configuration steps required to set up the VDSL connection are now completed.

  • The VLAN tag 7 is a default value that may vary depending on your service provider. Please check with your service provider what VLAN tag is actually used. The Provider ALICE uses VLAN-Tag 11.
  • Each item is described by pop-up help text. Just click on the question mark at the top right of the dialog.