210x and 310x

Did you enter a valid hostname or IP address for the destination computer?

  • Is the destination hostname or IP address specified correct?

The port number for the protocol being used is set incorrectly?

  • Specify the correct port number.

Is the machine correctly connected to the network?

  • Are the network cables connected correctly?
  • Is the WiFi connection working?
  • Is the RJ45 jack seated correctly and the clip not broken?
  • Is network environment/equipment operating correctly?
    • Network switch
    • Network switch ports
    • Source and Destination network ports
  • Home/Business Internet Router
    • The internet router could blocking the traffic in it security settings

Gateway IP address correct?

  • Is the IP address for the GATEWAY set to the correct value