Switch Administration Guide

Port Settings

Use this screen to view and configure Switch port settings. The Port Settings feature allows for the configuration of the ports on the Switch in order to find the best balance of speed and flow control. To access the page, in the Ports image, select the port to configure and click Edit.

Status

Enables or disables the interfaces.

Flow Control

A concentration of traffic on a port decreases port bandwidth and overflows buffer memory causing packet discards and frame losses. Flow Control is used to regulate transmission of signals to match the bandwidth of the receiving port. The Switch uses IEEE802.3x flow control in full duplex mode and backpressure flow control in half duplex mode.

IEEE802.3x flow control is used in full duplex mode to send a pause signal to the sending port, causing it to temporarily stop sending signals when the receiving port memory buffers fill.

Back Pressure flow control is typically used in half duplex mode to send a “collision” signal to the sending port (mimicking a state of packet collision) causing the sending port to temporarily stop sending signals and resend later.

STP By default STP is not available. After creating a MST instance, STP states can be modified for individual ports.

Mode

Select the speed and the duplex mode of the Ethernet connection on this port.

Selecting Auto (Auto-Negotiation) allows one port to negotiate with a peer port automatically to obtain the connection speed and duplex mode that both ends support. When auto-negotiation is turned on, a port on the Switch negotiates with the peer automatically to determine the connection speed and duplex mode. If the peer port does not support auto negotiation or turns off this feature, the Switch determines the connection speed by detecting the signal on the cable and using half duplex mode. When the Switch’s auto-negotiation is turned off, a port uses the pre-configured speed and duplex mode when making a connection, thus requiring the settings of the peer port to be the same in order to connect.

Port Description Add a port description using up to 127 characters.

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