Table 4: Chassis Status LEDs in EX2300 Switches Except the EX2300-24MP and EX2300-48MP
Models
LED Label Color State and Descripon
SYS Green
• On steadily—Junos OS for EX Series switches
has been loaded on the switch.
• Blinking—The switch is boong.
• O—The switch is powered o or is halted.
ALM Red There is a major alarm.
NOTE: When you connect power to the switch, the
alarm LED (ALM) glows red. This behavior is
normal. Plugging an acve Ethernet cable into the
management port (MGMT) on the switch completes
the network link and turns o the ALM LED. (See
Connect a Device to a Network for Out-of-Band
Management
.)
Connecng the switch to a dedicated management
console instead of a network does not aect the
ALM LED. The LED remains red unl the switch is
connected to a network.
Yellow There is a minor alarm.
NOTE: The ALM LED glows yellow if you commit a
conguraon to make it acve on the switch
without creang a rescue conguraon to back it
up. To save the most recently commied
conguraon as the rescue conguraon, enter the
operaonal mode command request system
configuration rescue save.
Unlit There is no alarm or the switch is halted.
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