Services Routers Hardware Guide

off and on again, we recommend waiting a few seconds between shutting it down
and powering it back up. Table 13 on page 28 describes the STATUS LED.
Table 13: STATUS LED
DescriptionStateColor
Router is starting up or performing diagnostics.BlinkingGreen
Router is operating normally.On steadily
Error has been detected.BlinkingRed
ALARM LED
The ALARM LED lights yellow to indicate a minor condition that requires monitoring
or maintenance and lights red to indicate a major condition that can result in a system
shutdown. When the condition is corrected, the light turns off. Table 14 on page 28
describes the ALARM LED.
Table 14: ALARM LED
DescriptionStateColor
Major alarm indicates a critical situation on the router that
has resulted from one of the following conditions. A red
alarm condition requires immediate action:
■
One or more hardware components have failed.
■
One or more hardware components have exceeded
temperature thresholds.
■
An alarm condition configured on an interface has
triggered a critical warning.
On steadilyRed
Minor alarm condition requires monitoring or maintenance:
■
Indicates a noncritical condition on the router that, if
left unchecked, might cause an interruption in service
or degradation in performance.
■
A missing rescue configuration or software license
generates a yellow system alarm.
On steadilyYellow
No alarms.OffUnlit
For information about alarm conditions and corrective actions, see “Monitoring and
Correcting Chassis Alarm Conditions” on page 157. For additional information, see
the JUNOS Software Administration Guide.
28 ■ J4350 and J6350 Services Router Hardware Features
JUNOS Software with Enhanced Services Hardware Guide