The Device View
Duplex
This field specifies Half Duplex or Full Duplex mode for the port.
Flow Control
Flow control allows Ethernet devices to notify attached devices that congestion is occurring and that the sending device should stop transmitting until the congestion can be cleared. There are two commonly used methods of flow control:
Ports set to Full Duplex mode have
Symmetric | The port is able to both receive and transmit pause control frames. |
Asymmetric RX | This option appears only for Gigabit Ethernet ports. The port will |
| receive pause control frames, but will not transmit its own. |
Asymmetric TX | This option appears only for Gigabit Ethernet ports. The port is |
| capable of sending pause control frames, but will not acknowledge |
| received pause control frames. |
Disabled | Disables flow control on the port. |
Auto Negotiate | Ports configured to operate in auto negotiation mode will only use |
| pause control frames if the negotiation process determines that the link |
| partner supports them. Both ends of the link must support auto |
| negotiation and a common mode of operation. |
Ports set to Half Duplex mode use Backpressure flow control. Backpressure flow control simply asserts the carrier sense signal out the port causing the device transmitting to detect a collision, stop transmitting data, and send the jam signal. Backpressure flow control options are enabled or disabled.
Setting the Desired Operational Mode
For any
For
Managing the Module |
