Table 120: Chassis Status LEDs on an EX4300 Switch
State and DescriptionColorLED Label
There is no alarm or the switch is halted.UnlitALM (Alarm)
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 (ALM) LED glows
red. 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 ALM LED. (See “Connect a Device to a Network for Out-of-Band
Management” on page 325.)
Connecting the switch to a dedicated management console instead of a
network does not affect the ALM LED. The LED remains red until the switch
is connected to a network.
Red
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 (ALM) LED glows yellow on EX4300 switches except
EX4300-48MP and EX4300-48MP-S switches or amber on EX4300-48MP
and EX4300-48MP-S switches if you commit a configuration to make 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 request system
configuration rescue save.
Yellow (on EX4300
switches except
EX4300-48MP and
EX4300-48MP-S
switches) or amber
(on EX4300-48MP
and
EX4300-48MP-S
switches)
•
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.
GreenSYS (System)
•
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.
Unlit
565
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