This tool can be used to view and configure the speed and duplex settings of the physical network cards in the ESX Server. This tool can replace the mii-tool and modules.conf for network card management.In the following example, we run the list option to view all physical NICs and their properties.[root@esx1host etc]# esxcfg-nics -l

Name PCI Driver Link Speed Duplex Description

vmnic2 01:01.00 tg3 Up 1000Mbps Full Broadcom Corporation NetXtreme BCM5703 Gigabit Ethernet

vmnic0 01:02.00 tg3 Up 100Mbps Full Broadcom Corporation NC7781 Gigabit Server Adapter (PCI-X, 10,100,1000-T)

vmnic1 04:02.00 tg3 Up 1000Mbps Full Broadcom Corporation NC7781 Gigabit Server Adapter (PCI-X, 10,100,1000-T)

This command has the following optional parameters:

esxcfg-nics <options> [nic]

-s|–speed <speed> Set the speed of this NIC to one of 10/100/1000/10000. Requires a NIC parameter.

-d|–duplex <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.

-r|–restore Restore the nics configured speed/duplex settings (INTERNAL ONLY)

-h|–help Display this message.