Allied Telesis AT-MCF2000M - Manual (Page 22)

Chapter 1: Overview
22
IEEE 802.3u compliant, the port can set its speed and
duplex mode automatically with Auto-Negotiation, the
default setting. Auto-Negotiation can be disabled and the
speed and duplex mode set manually with the AT-S97
Management Software.
The wiring configuration of the port is set automatically with
auto-MDI/MDI-X to either MDI or MDI-X, depending on the
wiring configuration of the end node. This permits the use of
a straight-through twisted pair cable regardless of the wiring
configuration of the port on the network device.
The auto-MDI/MDI-X feature is only available when the port
is using Auto-Negotiation. If Auto-Negotiation is disabled
and the port’s speed and duplex mode are set manually,
this feature is disabled and the port defaults to the MDI-X
setting. Depending on the wiring configuration of port on the
remote device, you may need to manually configure the
MDI/MDI-X setting on the 10/100/1000Base-T Terminal port
or use a crossover cable.