Use the "etherconfig" command to view and configure the Ethernet parameters.
View settings
msh> etherconfig
Specify Ethernet Speed
msh> etherconfig speed {auto|10f|10h|100f|100h}
auto=Auto 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".