3Com corebuilder 3500 Implementation Manual page 81

10/100BASE-TX ports — Enabling autonegotiation causes both the
port speed and duplex mode attributes to be autonegotiated.
100BASE-FX ports — No autonegotiation of duplex mode occurs.
The port speed is fixed at 100 Mbps. The default duplex mode is
half-duplex.
1000BASE-SX ports — Both link partners must either enable or
disable autonegotiation. As long as autonegotiation is enabled, the
system's best effort for handling flow control is
When you enable autonegotiation, the system ignores your requested
information for 10/100BASE-TX ports and your requested
portMode
information for 1000BASE-SX ports. When you disable
flowControl
autonegotiation, the system recognizes the requested
values for ports that have portMode options and the requested
values for 1000BASE-SX ports.
flowControl
Use the option to manually configure or modify the port
portMode
speed and duplex mode. Use the
configure or modify flow control.
Autonegotiation is enabled by default on the ports that support it.
Autonegotiation
.
On
option to manually
flowControl
81
portMode