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

Fast Ethernet and Gigabit Ethernet Line Cards

Duplex Mode

Type of Cabling

Auto-MDI

LEDs

18
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 to
let you set the duplex mode manually with 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 when the port is set to Auto-Negotiation. 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.
Note
Auto-MDI is activated as the default on all twisted-pair 10/100 ports
on the switch. To activate Auto-MDI, and set the port manually,
refer to the AT-S60 Management Software User's Guide or the
AT-S60 Command Line User's Guide.
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
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.