Setting port speed and duplex mode – Allied Telesis AT-S100 User Manual

Page 44

Chapter 2: Configuring the AT-S100 Software

switch(config)# interface ge5

switch(config-if)# mirror ge7 direction receive

For more information about this command, see “MIRROR INTERFACE
DIRECTION” on page 176.

Setting Port

Speed and Duplex

Mode

A twisted pair port can operate in either half- or full-duplex mode. (Full-
duplex mode is the only mode available when a port is operating at 1000
Mbps.) The twisted pair ports are IEEE 802.3u-compliant and Auto-
Negotiate the duplex mode setting.

You can disable Auto-Negotiation on one or all of the switch ports so that
you can set the duplex mode manually through the AT-S100 Management
Software.

Note

In order for a switch port to successfully Auto-Negotiate its duplex
mode with a 10 or 100 Mbps end node, the end node should also be
configured for Auto-Negotiation. Otherwise, a duplex mode
mismatch can occur. A switch port using Auto-Negotiation defaults
to half-duplex if it detects that the end node is not using Auto-
Negotiation. This results in a mismatch if the end node is operating
at a fixed duplex mode of full-duplex.

To avoid this problem when connecting an end node with a fixed
duplex mode of full-duplex to a switch port, use the AT-S100
Management Software to disable Auto-Negotiation on the local port
and set the port speed and duplex mode manually.

You can set both the port speed and the duplex mode for each port on the
switch. The syntax of this command is:

To set port 28 to 100FX in full-duplex mode, enter the following
commands:

switch# configure terminal

switch(config)# interface ge28

switch(config-if)# speed 100fx

For more information about this command, see “SPEED” on page 182.