UMN:CLI
User Manual
V5824G
82
5.2.4
Duplex Mode
Ethernet operates in either half-duplex or full-duplex mode. In full-duplex mode, frames
travel in both directions simultaneously over two channels on the same connection for an
aggregate bandwidth of twice that of half-duplex mode. Full duplex networks are very
efficient since data can be sent and received simultaneously.
To set the duplex mode on an Ethernet port, use the following command.
Command
Mode
Description
port duplex
PORTS
{
full
|
half
}
Bridge
Sets full-duplex or half-duplex mode on a specified
port.
PORTS: port number
5.2.5
Flow Control
In Ethernet networking, the flow control is the process of adjusting the flow of data from
one network device to another to ensure that the receiving device can handle all of the
incoming data. For this process, the receiving device normally sends a PAUSE frame to
the sending device when its buffer is full. The sending device then stops sending data for
a while. This is particularly important where the sending device is capable of sending data
much faster than the receiving device can receive it.
To enable the flow control on an Ethernet port, use the following command.
Command
Mode
Description
port flow-control
PORTS
{
on
|
off
}
Bridge
Enables the flow control on a specified port.
(default: off)
PORTS: port number
To display the configuration of port flow control, use the following command.
Command
Mode
Description
show port flow-control
[
PORTS
]
Enable
Global
Bridge
Shows the status of port flow control.
5.2.6
Port Description
To specify a description of an Ethernet port, use the following command.
Command
Mode
Description
port
description
PORTS
DESCRIPTION
Bridge
Specifies a description of an Ethernet port. (maximum
number of characters is 100)
PORTS: port number
no port
description
PORTS
Deletes a specified description of an Ethernet port.
