ERX 8.0.x Hardware Guide

Figure 49: E3 and T3 Module LEDs

OK

FAIL

ONLINE

REDUNDANT

RED

YEL

ALM

 

ALM

SYNC

 

0

1

2

LED Activity

Functional status LEDs

Interface status LEDs

g013770

When the system boots, it runs a series of tests for each module installed in the system, and the LEDs display various configurations. See Table 12 and Table 13 to understand normal and abnormal LED activity.

NOTE: When you reboot the system after installing a new version of the software, the line modules appear to boot twice.

Table 12: Normal Activity of Functional Status LEDS During Booting

OK

off

off

FAIL

ONLINE

Status Process

on

off

1.

Module is in the

(off for GE-2 LM and

 

power-up restart

 

state; the FAIL LED

GE-HDE LM)

 

stays on briefly.

on

off

2.

Module is

 

 

initializing, and

diagnostic tests are running; the FAIL LED stays on briefly.

110

 

Understanding Status LEDs to Troubleshoot

 

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Juniper Networks 8 manual LED Activity, Normal Activity of Functional Status Leds During Booting