3Com 7700 Configuration Manual page 37

Perform the following configuration in Ethernet port view.
Table 4 Set Duplex Attribute for Ethernet Port
Operation
Set duplex attribute for
Ethernet port.
Restore the default duplex
attribute of Ethernet port.
Note: 100M electrical Ethernet port can operate in full-duplex, half-duplex or
auto-negotiation mode. The Gigabit electrical Ethernet port can operate in full
duplex, half duplex or auto-negotiation mode. When the port operates at
1000Mbps, the duplex mode can be set to full (full duplex) or auto
(auto-negotiation).The optical 100M/Gigabit Ethernet ports support full duplex
mode and can be configured to operate in full (full duplex) or auto
(auto-negotiation) mode. The port is in auto (auto-negotiation) mode by default.
Setting Speed of Ethernet Port
You can use the following command to set the speed on the Ethernet port. If the
speed is set to auto (auto-negotiation) mode, the local and peer ports will
automatically negotiate the port speed.
Perform the following configuration in Ethernet port view.
Table 5 Set Speed on Ethernet Port
Operation
Set 100M Ethernet port speed speed {10 | 100 | auto}
Set Gigabit Ethernet port
speed
Restore the default speed on
Ethernet port
Note: 100M electrical Ethernet port can operate at 10Mbps and 100Mbps as per
different requirements. The electrical Gigabit Ethernet port can operate at
10Mbps, 100Mbps, or 1000Mbps as per different requirements. However in half
duplex mode, the port cannot operate at 1000Mbps.100M optical Ethernet port
supports 100Mbps and can be configured to operate at 100 (100Mbps) or auto
(auto-negotiation).The Gigabit Ethernet port supports1000Mbps and can be
configured to operate at 1000 (1000Mbps) and auto (auto-negotiation). The
speed of the port is auto mode by default.
Setting Cable Type for Ethernet Port
The Ethernet port supports the straight-through (MDI) and cross-over (MDIX)
network cables. The following command can be used for configuring the cable
type.
Perform the following configuration in Ethernet port view.
Table 6 Set the Type of the Cable Connected to the Ethernet Port
Operation
Set the type of the cable connected
to the Ethernet port.
Command
duplex {auto | full | half}
undo duplex
Command
speed {10 | 100 | 1000 | auto}
undo speed
Command
mdi {across | auto | normal}
Ethernet Port Overview 29