Figure 14: Chassis Status Leds In An Ex4500 Switch; Table 10: Chassis Status Leds In An Ex4500 Switch - Juniper EX4500 Hardware Manual

EX4500 Switch Hardware Guide

Table 10: Chassis Status LEDs in an EX4500 Switch

LED Label
ALM (Alarm)
SYS (System)
MST (Master)
Related
Documentation
30

Figure 14: Chassis Status LEDs in an EX4500 Switch

Table 10 on page 30 describes the chassis status LEDs in an EX4500 switch, their colors
and states, and the status they indicate. You can view the colors of the three LEDs
remotely through the CLI by issuing the operational mode command
Color
Unlit
Red
Amber
Green
Green
A major alarm (red) indicates a critical error condition that requires immediate action.
A minor alarm (amber) indicates a noncritical condition that requires monitoring or
maintenance. A minor alarm that is left unchecked might cause interruption in service or
performance degradation.
All three LEDs can be lit simultaneously.
Front Panel of an EX4500 Switch on page 17
Chassis Component Alarm Conditions on EX4500 Switches on page 236
Checking Active Alarms with the J-Web Interface on page 241
State and Description
There is no alarm or the switch is halted.
There is a major alarm.
There is a minor alarm.
On steadily—Junos OS for EX Series switches has been
loaded on the switch.
Blinking—The switch is booting.
Off—The switch is powered off or is halted.
In a standalone EX4500 switch:
On steadily—The switch is functioning normally.
Off—The switch is powered off or is halted.
In a Virtual chassis configuration:
On steadily—The switch is the master in the Virtual Chassis
configuration.
Blinking—The switch is the backup in the Virtual Chassis
configuration.
Off—The switch is a linecard member in the Virtual Chassis
configuration or is halted.
Copyright © 2017, Juniper Networks, Inc.
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