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This article describes how the speed for the SFP ports can be set on GS-23xx, GS-3xxx or XS-51xx series switches.


Make sure, that access to the management IP address of the device is possible via another or an additional port. If a connection via the SFP port cannot be established, access to the switch is still possible.

The port configuration has to be made before plugging in the SFP module.


  • LANCOM Switch of the GS-23xx, GS-3xxx or XS-51xx series
  • Any web browser for accessing the webinterface