Allied Telesis AT-S79 manual Setting a Port’s Speed and Duplex Mode

Chapter 4: Port Configuration

Setting a Port’s Speed and Duplex Mode

To change a port’s speed or duplex mode, perform the following procedure:

1.From the Main Menu, type B to select Basic Configuration.

The Basic Switch Configuration Menu is shown in Figure 4 on page 30

2.From the Basic Switch Configuration Menu, type P to select Port Configuration.

The Port Configuration Menu is shown in Figure 13 on page 50.

3.Type M to select Set Mode.

The following prompt is displayed:

Set Mode -> Enter port number >

4.Enter the number of the port whose speed or duplex mode you want to change. You can configure only one port at a time.

The following prompt is displayed:

Enter new mode for port n (a/h/H/F/f/t/T)>

5.Enter the letter that corresponds to the desired speed and duplex mode setting for the port. The port settings are:

a - Auto: The port uses Auto-Negotiation to set its speed and duplex mode. This is the default setting for all ports.

h - 10 Mbps, half-duplex f - 10 Mbps, full-duplex H - 100 Mbps, half-duplex F - 100 Mbps, full-duplex t - 1000 Mbps, half-duplex T - 1000 Mbps, full-duplex

When selecting a setting, note the following:

ˆWhen a twisted pair port on the switch is set to Auto-Negotiation, the default setting, the end node should also be using Auto- Negotiation to prevent a duplex mode mismatch. A switch port using Auto-Negotiation defaults to half-duplex if it detects that the end node is not using Auto-Negotiation. This can result in a mismatch if the end node is operating at a fixed duplex mode of

54 Section I: Using the Menus Interface