How Configure the Network card Speed in ESX Console

Configuring the speed and duplex of the ESX Server host network adapter at the service console
To configure the speed and duplex of the ESX Server host network adapter using the service console:

1.Log in to the ESX Server host as the root user at the physical console, by remote console, or by SSH.
2.Type the following command and press Enter to list the available network adapters and their current settings:

[root@server root]# esxcfg-nics -l
Name PCI Driver Link Speed Duplex Description
vmnic0 04:04.00 tg3 Up 1000Mbps Full BCM5780 Gigabit Ethernet
vmnic1 04:04.01 tg3 Up 1000Mbps Full BCM5780 Gigabit Ethernet


3.The following examples illustrate how to change the speed and duplex of an ESX Server network adapter.

Configure vmnic1 for autonegotiation:

[root@server root]# esxcfg-nics -a vmnic1

Force vmnic1 to operate at 100/Full:

[root@server root]# esxcfg-nics -s 100 -d full vmnic1

Type esxcfg-nics without parameters to get full usage information