esxcfg-nics [nic]
-s|--speed Set the speed of this NIC to one of 10/100/1000/10000.
Requires a NIC parameter.
-d|--duplex Set the duplex of this NIC to one of 'full' or 'half'.
Requires a NIC parameter.
-a|--auto Set speed and duplexity automatically. Requires a NIC parameter.
-l|--list Print the list of NICs and their settings.
-e|--ens Print the ENS settings of all NICs.
-r|--restore Restore the nics configured speed/duplex settings (INTERNAL ONLY)
-h|--help Display this message.