GBIC and SFP

Expansion Slot

LEDs

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

are defined in Table 7.

Table 7. LEDs for the Fiber Optic Ports on the AT-8516F/SC Switch

LED

State

Description

 

 

 

 

 

 

L/A

OFF

Indicates no link has been established between

 

 

the port and the end node.

 

 

 

 

Green

Indicates a valid link exists between the port

 

 

and the end node.

 

 

 

 

Flashing

Indicates that the port is transmitting and/or

 

Green

receiving data packets.

 

 

 

D/C

Green

Indicates that the port is operating in full-duplex

 

 

mode.

 

 

 

 

Amber

Indicates that the port is operating in half-duplex

 

 

mode.

 

 

 

 

Flashing

Indicates that data collisions are occurring on

 

Amber

the port.

 

 

 

Note

The AT-8516F/SC switch does not have an LED Mode Select button.

The GBIC and SFP slots on the AT-8550GB and AT-8550SP switches, respectively, have two LEDs. The LEDs display the operating status of the fiber optic port. Use the Mode Select button on the switch to toggle the status information displayed by the MODE LED. The LEDs are defined in Table 8.

Table 8. LEDs for the Optional GBIC and SFP Ports on an AT-8550GB and

AT-8550SP Switches

LED

State

Description

 

 

 

 

 

 

LINK

OFF

Indicates that there is no link between the

 

 

port and the end node.

 

 

 

 

Solid

Indicates a valid link has been established

 

Green

between the port and the end node.

 

 

 

Mode - COL

OFF

Indicates that no data collisions are

 

 

occurring on the port.

 

 

 

 

Flashing

Indicates that data collisions are occurring

 

Green

on the port.

 

 

 

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Allied Telesis AT-8500 Series manual Gbic and SFP Expansion Slot LEDs