To view and set status of a network interface, you can use
To view status of interfaces:
simply displays status of all interfaces.
Sample output is as below:eth0:
negotiated 100baseTx-FD, link ok eth1: 100 Mbit, half duplex, no link
To set one interface to a value by using force, you can usethe command below:
mii-tool -F <media> <device>
where media is one of 100baseT4, 100baseTx-FD,100baseTx-HD, 10baseT-FD, 10baseT-HD and device is the interface name such as eth0 or eth1
mii-tool -F 100baseTx-FD eth0
sets interface eth0 to 100baseTx-FD without autonegotiation.
See also: man mii-tool