50CHAPTER 5: POWER-ON

on the left side of the LED panel. Table 9 shows the correlation between the current system state and SYS LEDs display. For example, during normal operation the PWR LED is on, the FAIL LED is off and the ACT LED is flashing. The LEDs on the right side of the panel indicate the status of the Ethernet port, the Service port and the Control port.

P W R

F A I L

A C T

1 0 B A S E - T Status

S e rv i ce

Status

Control Status

Figure 9 Switching Module LEDs

Table 9 CoreBuilder System States

 

 

 

 

10BASE-T

Service Port

Control

 

Power

Fail

Activity

Status

Status

Terminal Status

System State

(green)

(red)

(yellow)

(green)

(green)

(green)

 

 

 

 

 

 

 

Power-on

On

Off

On

On

Flashing

Flashing

 

 

 

 

 

 

 

Normal operation

On

Off

Flashing

On

On

On

 

 

 

 

 

 

 

Hardware fault

On

On

Off

Off

Off

Off

 

 

 

 

 

 

 

Software fault

On

Off

Not flashing

Undetermined

Undetermined

Undetermined

 

 

 

 

 

 

 

No power to unit

Off

Off

Off

Off

Off

Off

 

 

 

 

 

 

 

The following table also provides information about the LED display of system states but is organized by system status LED.

Table 10 Description of Switching Module LEDs

LED

Color

Description

Source

 

 

 

 

PWR (Power)

Green

DC power input active.

Hardware

ACT (Activity)

Yellow

Should blink continuously when

Software

 

 

operational.

 

FAIL

Red

CPU failure.

Hardware

 

 

 

CPU or

 

 

 

Watchdog

10BASE-T

Green

10BASE-T link OK. The Ethernet link is

Hardware

STATUS

 

active.

Ethernet

 

 

 

controller

Page 50
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3Com 7000 manual I L, Color Description Source

7000 specifications

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