Description: This controls whether the local Ethernet interface configuration is automatically negotiated or forced. Do not use a forced setting together with auto negotiation at the Ethernet link partner. If you want to run your Ethernet link at a fixed speed and duplex then you would normally leave auto negotiation enabled and only enable the single Auto Neg Advertisement option that you want the link to run in - FORCING ETHERNET CONFIGURATION IS A LAST RESORT WHICH SHOULD ONLY BE PERFORMED IF YOU ARE HAVING PROBLEMS WITH AUTO NEGOTIATION - AND YOU MUST ENSURE THAT YOU CONFIGURE BOTH THIS UNIT AND THE ETHERNET LINK PARTNER TO WHICH IT IS CONNECTED IDENTICALLY (THE LINK PARTNER MUST NOT HAVE AUTO NEGOTIATION ENABLED EITHER, OTHERWISE A DUPLEX MISMATCH WILL OCCUR). NB: The new setting will only take effect after a system reboot.