3Com CoreBuilder 3500, Руководство по внедрению, Страница: 82 / 592

82 C
HAPTER
5: E
THERNET
Port Mode
You can change the port speed and duplex mode for the 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
■
You can use this command to configure the same setting on multiple
ports simultaneously. When you specify multiple port numbers, the
system prompts you to choose the setting and then applies it to all of
the ports.
■
The device that is connected to each port must be configured for the
same port mode. If the port speeds differ, the link does not come up.
If the duplex modes differ, link errors occur.
■
Gigabit Ethernet ports do not support mode options. The value
all
refers only to ports that support port mode options.
■
If you change to full-duplex mode on the port, a message indicates
that collision detection will be disabled unless you configure the
connected device to the same duplex mode.
■
Disable autonegotiation on any port on which you are setting a
specific port mode.
■
Table 7 lists the duplex port mode options available for each port type.
Table 7
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