Display actual link rates and duplex modes on corresponding ports.
"--" is displayed if a port is not linked or link failure occurs.
Three types of duplex modes are available on RJ45 ports: 10M,
100M, 1000M. 10M/100M: half duplex (HDX) and full duplex (FDX);
1000M: full duplex (FDX). Only one duplex mode is available on
SFP ports: 1000M full duplex. You can select different duplex
modes as you need.
If you want the port to send and receive packets concurrently,
you can set this port to work in full duplex mode.
If you want the port to either send or receive packets, you can
set this port to work in half duplex mode.
When you set the port to work in auto mode, the duplex status
of the port will be determined via auto-negotiation.
By default, the speed/duplex mode for all ports is auto-negotiation.
