Table 194: Chassis Status Leds On An Ex4300 Switch - Juniper QFabric QFX3000-G Hardware Documentation

Table 194: Chassis Status LEDs on an EX4300 Switch

LED Label Color
(Alarm) Unlit
ALM
Red
Yellow
(System) Green
SYS
Unlit
(Master) Green
MST
Copyright © 2018, Juniper Networks, Inc.
State and Description
There is no alarm or the switch is halted.
There is a major alarm. A major alarm indicates a critical error condition that requires
immediate attention.
NOTE: When you connect power to the switch, the Alarm (
This behavior is normal. Plugging an active Ethernet cable into the management
( MGMT ) port on the switch completes the network link and turns off the
(See Connecting a Device to a Network for Out-of-Band Management.)
Connecting the switch to a dedicated management console instead of a network
does not affect the
to a network.
There is a minor alarm. A minor alarm 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 Alarm (
it active on the switch and do not also create a rescue configuration to back it up.
To save the most recently committed configuration as the rescue configuration,
enter the operational mode command
On steadily—Junos OS for EX Series switches has been loaded on the switch.
Blinking (not applicable for EX4300-48MP and EX4300-48MP-S switches)—The
switch is booting.
EX4300 switches except EX4300-48MP and EX4300-48MP-S switches—The
switch is powered off or is halted.
EX4300-48MP and EX4300-48MP-S switches—The switch is booting or the
switch is powered off or is halted.
In a standalone EX4300 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 line card member in the Virtual Chassis configuration or is
halted.
A major alarm (red) indicates a critical error condition that requires immediate action.
A minor alarm (yellow) 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.
Chapter 54: Viewing EX4300 System Information
ALM LED. The LED remains red until the switch is connected
) LED glows yellow if you commit a configuration to make
ALM
request system configuration rescue save
ALM ) LED glows red.
ALM LED.
.
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