Juniper EX4100, Hardware Manual

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Table 6: SYS, ALM, and MST Chassis Status LEDs on EX4100 and EX4100-F Switches
(Continued)
LED Label Color State and Description
ALM Red A major hardware fault—such as a temperature alarm or a
power failure alarm—occurred, and the switch is halted.
A major alarm indicates a critical error condition that
requires immediate attention (see
"Chassis Component
Alarm Conditions on EX4100 and EX4100-F Switches" on
page 201
).
Amber A minor alarm—such as a software or a hardware error—
occurred. Power off the switch and then power it back on.
Monitor the switch to see whether it is working properly.
A minor alarm indicates a non-critical condition that
requires monitoring or maintenance. A minor alarm that is
left unchecked might cause interruption in service or
performance degradation.
Unlit No alarm is in effect, or the switch is halted.
MST Green In a standalone 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 primary switch in the
Virtual Chassis configuration.
•
Blinking—The switch is the backup switch in the
Virtual Chassis configuration.
•
Off—The switch is a linecard member in the Virtual
Chassis configuration, or the switch is halted.
Table 7 on page 43 describes the cloud LED (labeled CLD) on an EX4100 and EX4100-F switch. The
table also describes the colors on the switch and the status that the colors indicate.
42