Guided Troubleshooting: Do the LAN LEDs indicate a working connection?

• Do all LAN LEDs indicate a working network connection (on the device, on the PC, and, if the device is not connected directly, on the switch)?

  Note
  If the device does not have a LAN LED or if you can not see it, proceed with No to check the corresponding potential causes for failure.

  • Yes

  • No

  How to find out whether there is a working network connection

  Communication in the hardware network takes place via LAN or data cables connecting the participating components, i.e. there is a data cable between the PC (namely its network card) and the switch (if used) and another one between the switch and the device. The ports where these cables are plugged may have an LED indicating whether the data connection is working. For example, a network card with a solid green LED or light usually indicates that the card is either connected or receiving a signal. If the green light is flashing, this is an indication of data being sent or received.

  Check the LEDs on all relevant participants in the network:

  • Ethernet port on the PC

    Note: a working data connection is usually indicated by a green LED;
    a blinking amber LED indicates a 100 MBit connection; it is not relevant here.

  • Ethernet port on the switch

  • Port on the hardware device: Please see the device's user's guide for details on LEDs and/or blink codes.