Juniper Networks EX4200 - Manual (Page 44)

Table 5 on page 18 describes the chassis status LEDs in an EX3200 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
show
chassis lcd .
Table 5: Chassis Status LEDs in an EX3200 Switch
State and Description Color LED Label
There is no alarm. Unlit ALM (Alarm)
There is a major alarm. Red
There is a minor alarm. Amber
■ On steadily—JUNOS Software for EX Series switches has
been loaded on the switch.
■ Blinking—The switch is booting.
Green SYS (System)
This LED is always on and is meaningful only on EX4200
switches. Green MST (Master)
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.
NOTE: The amber glow of the Alarm LED that indicates a minor alarm closely
resembles the red glow that indicates a major alarm.
All three LEDs can be lit simultaneously.
Related Topics Front Panel of an EX3200 Switch on page 8 ■
■ Checking Active Alarms with the J-Web Interface
■ Understanding Alarm Types and Severity Levels on EX Series Switches
Chassis Status LEDs in EX4200 Switches
The front panel of an EX4200 switch has three LEDs on the far right side of the panel,
next to the LCD panel (see Figure 10 on page 19).
18 ■ Chassis Status LEDs in EX4200 Switches
Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches