Port Speed & Duplex Mode
After plugging the selected cable to a specific port, the
system
uses
auto-negotiation
to
determine
the
transmission
mode
for
any
new
twisted-pair
connection:
If the attached device does not support auto-
negotiation or has auto-negotiation disabled, an
auto-sensing process is initiated to select the speed
and set the duplex mode to half-duplex.
17