Duplex Mode; Type Of Cabling; Auto-Mdi; Leds - Allied Telesis AT-8400 Series Reference Manual

Duplex Mode

Type of Cabling

Auto-MDI

LEDs

Each twisted-pair port on the line card can operate in either half- or full-
duplex mode. The twisted-pair ports are IEEE 802.3u-compliant and will
Auto-Negotiate the duplex mode setting. If the end node connected to a
twisted-pair port on the switch is capable of full-duplex operation, the
switch sets the twisted-pair port to full-duplex. If the end node is capable
of only half-duplex, the port is set to half-duplex.
If desired, Auto-Negotiation on one or all of the ports can be disabled so
that you can set the duplex mode manually through the management
software.
For 10 Mbps operation, Category 3 or better 100 ohm shielded or
unshielded twisted-pair cabling is required. For 100 Mbps operation,
Category 5 or Enhanced Category 5 (5E) 100 ohm shielded or unshielded
twisted-pair cabling is required.
The ports are auto-MDI. They automatically configure themselves as
either MDI or MDI-X when connected to an end node. This feature allows
you to use either straight-through or crossover twisted-pair cables to
connect devices to the ports.
Table 5 describes the port LEDs.
Table 5: AT-8411 TX Line Card LEDs
LED State
RDY Steady Green
LINK/ACT OFF
Steady Green
Flashing
Green
LINK 10/ OFF
100
Steady Green
AT-8400 Series Switch Reference Guide
Description
The line card is receiving power and
is ready to pass traffic.
The port has not established a valid
link with the end node.
The port has established a valid link
with the end node.
The port is transmitting and/or
receiving data.
The port has established a valid
10 Mbps link with the end node.
The port has established a valid
100 Mbps link with the end node.
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