3Com 4007, Implementation Manual, Page: 156 / 684

156 C
HAPTER
8: E
THERNET
Port Mode
You can change the port speed and duplex mode for 10/100BASE-TX
ports and the duplex mode for 100BASE-FX ports. You cannot change
the port speed or duplex mode for Gigabit Ethernet ports.
Important
Considerations
■
When you configure duplex mode, configure both sending and
receiving ports comparably. If the port speeds differ, the link does not
come up. If the duplex modes differ, link errors occur.
■
Table 37 lists the duplex port mode options available for each port
type.
■
Enabling full-duplex mode on a port disables collision detection.
■
Autonegotiation must be disabled on a port before a port mode
selection can take effect.
Table 37 Port Mode Options
Port Type Duplex Port Mode Resulting Port Mode [Default]
10/100BASE-TX 100full
100half
10full
10half
100 Mbps, full-duplex
100 Mbps, half-duplex
10 Mbps, full-duplex
10 Mbps, half-duplex
10half
100BASE-FX 100full
100half
100 Mbps, full-duplex
100 Mbps, half-duplex
100half