3com 4226T User Manual

C

HAPTER

 1: I

NTRODUCING

 

THE

 S

UPER

S

TACK

 3 S

WITCH

 4200 S

ERIES

Green flashing Packets are being transmitted/received on the port.

Yellow 

A 10 or 100 Mbps link is present and the port is enabled.

Yellow flashing Packets are being transmitted/received on the port.

Green / Yellow 
alternating

A 10, 100 or 1000 Mbps link present but disabled.

Off

No link is present.

1–4

Green

When the Switch forms a stack with other Switch 4200 
Family units the LED indicates the position of the unit in the 
stack and that a link is present. Unit LED number 1 can also 
indicate a stand-alone Switch.

Off

The Switch initialization process is not complete. 

Green

The Switch is powered-up and operating normally.

Green flashing The Switch is either downloading software or is initializing 

(which includes running a Power On Self Test).

Yellow

The Switch has failed its Power On Self Test.

Refer to Chapter 4 Solving Problems Indicated by LEDs.

Off

The Switch is not receiving power or there is a fault with the 
Power Supply Unit.

Green flashing The Switch Alert LED has been configured via the CLI or Web 

Interface to flash.

Off

The Switch Alert LED has been configured via the CLI or Web 
Interface to be off (Default state).

DUA1730-0AAA04.book  Page 16  Thursday, November 17, 2005  2:59 PM