Allied Telesyn International Corp AT-9448Ts/XP Installation Guide download pdf (Page 28)

100

Chapter 1: Overview

Port LEDs

The following sections describe the twisted pair and fiber optic port LEDs.

10/100/1000Base-

T Twisted Pair

Port LEDs

A twisted pair port has two LEDs labeled L/A (link/activity) and D/C (duplex

mode/collisions). The L/A LED indicates the speed and activity on a port.

The D/C LED indicates the duplex mode (full- or half-duplex) and the

status of collisions on the port.

Table 3 describes the LEDs for the 10/100/1000Base-T twisted pair ports.

Table 3 Twisted Pair Port LEDs

LED Function State Description

L/A Link Status

and Activity

Off No link is established between the

port and the end node.

Solid

green

The port has established a link at

1000 Mbps.

Flashing

green

Packets are being received or

transmitted at 1000 Mbps.

Solid

amber

The port has established a link at 10

or 100 Mbps.

Flashing

amber

Packets are being received or

transmitted at 10 or 100 Mbps.

D/C Duplex

Mode and

Collisions

Green The port is operating in full-duplex

mode.

Amber The port is operating in half-duplex

mode. (Only when operating at 10 or

100 Mbps.)

Flashing

amber

Collisions are occurring on the port.

(Only when operating at 10 or 100

Mbps, half duplex mode.)

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