Juniper EX4500 Series User Manual

Chassis Status LEDs in EX4500 Switches
The front panel of an EX4500 switch has three chassis status LEDs (labeled ALM,
SYS, and MST) on the far right side of the panel, next to the Menu and Enter buttons
(see Figure 6 on page 13).
Figure 6: Chassis Status LEDs in an EX4500 Switch
Table 4 on page 13 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 show
chassis led.
Table 4: Chassis Status LEDs in an EX4500 Switch
State and DescriptionColorLED Label
There is no alarm.UnlitALM (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.
■
Off—The switch is powered off.
GreenSYS (System)
■
On steadily—The switch is functioning normally.
■
Off—The switch is powered off.
GreenMST (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.
All three LEDs can be lit simultaneously.
Related Topics Front Panel of an EX4500 Switch on page 7■
■ Checking Active Alarms with the J-Web Interface
Chassis Status LEDs in EX4500 Switches ■ 13
Chapter 2: Component Descriptions

Juniper EX4500 Series Specifications

General

Brand	Juniper
Model	EX4500 Series
Category	Switch
Language	English