Allied-telesis AT-8550SP User Manual download pdf (Page 31)

AT-8500 Series Layer 2+ Fast Ethernet Switches Installation Guide

LEDs

This section provides information on the LEDs found on the AT-8500

Series switches:

 “Twisted Pair Port LEDs and the LED Mode Select Button,” next

 “Fiber Optic Port LEDs” on page 34

 “GBIC and SFP Expansion Slot LEDs” on page 35

 “System LEDs” on page 36

Twisted Pair Port

LEDs and the

LED Mode Select

Button

This section applies to the AT-8524M, AT-8524POE, AT-8550GB, and

AT-8550SP switches.

The port LEDs on the front panel display port status information. Each port

has two LEDs. One of the LEDs displays the status of the link between a

port and its end node. The second LED, labeled MODE, displays a variety

of status information, depending on the switch model. You use the Mode

Select button on the front panel to toggle the Mode LEDs to display

different status information. The LEDs next to the Mode Select button

indicate the status being displayed by the port Mode LEDs.

Note

Toggling the Mode Selection button does not affect the normal

operations of the switch.

Table 4 describes the LEDs for the 10/100Base-TX twisted pair ports on

the AT-8524M, AT-8550GB, and AT-8550SP switches.

Table 4. LEDs for the 10/100Base-TX Twisted Pair Ports on the

AT-8524M, AT-8550GB, and AT-8550SP Switches

LED State Description

LINK OFF Indicates that there is no link between the

port and the end node.

Green Indicates a valid link has been established

between the port and the end node.

Mode - COL OFF Indicates that no data collisions are

occurring on the port.

Flashing

Green

Indicates that data collisions are occurring

on the port.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 89 90

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Allied-telesis AT-8550SP User Manual Page 31