Use the "etherconfig" command to view and configure the Ethernet parameters.
View settings
msh> etherconfig
Specify Ethernet Speed
msh> etherconfig speed {auto_100|auto_1000|10f|10h|100f|100h}
auto_100=Auto 100 Select
auto_1000=Auto 1000 Select
10f=10 Mbps Full Duplex
10h=10 Mbps Half Duplex
100f=100 Mbps Full Duplex
100h=100 Mbps Half Duplex
The default is "auto_100".