ES-2108 Series User’s Guide
78 Chapter 7 Basic Setting
7.7 Port Setup
Ethernet port connections can be in half-duplex or full-duplex mode. Full-duplex refers to a
device's ability to send and receive simultaneously, while half-duplex indicates that traffic can
flow in only one direction at a time. The Ethernet port must use the same speed or duplex
mode setting as the peer Ethernet port in order to connect.
Full-duplex mode operation only applies to point-to-point access (for example, when attaching
the switch to a workstation, server, or another switch). When connecting to hubs, use a
standard cascaded connection set at half-duplex operation.
Auto-negotiation regulates the speed and duplex of each port, based on the capability of both
devices. When auto-negotiation is turned on, an Ethernet port on the switch negotiates with the
peer automatically to determine the connection speed and duplex mode. If the peer Ethernet
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, an Ethernet port uses the preconfigured speed and
duplex mode when making a connection, thus requiring you to make sure that the settings of
the peer Ethernet port are the same in order to connect.
Use this screen to configure switch port settings. Click Basic Setting and then Port Setup in
the navigation panel to enter the port configuration screen.
Note: The ES-2108PWR screen is different from the other models covered in this UG.
The screen from ES-2108-G model is shown for comparison.
Figure 34 Port Setup (ES-2108PWR)
