Juniper EX2300 Series Hardware Manual page 36

Table 4: Chassis Status LEDs in EX2300 Switches Except the EX2300-24MP and EX2300-48MP
Models
LED Label
SYS
ALM
Color
Green
Red
Yellow
Unlit
State and Description
•
On steadily—Junos OS for EX Series switches
has been loaded on the switch.
•
Blinking—The switch is booting.
•
Off—The switch is powered off or is halted.
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 active Ethernet cable into the
management port (MGMT) 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 .)
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.
There is a minor alarm.
NOTE: The ALM LED glows yellow if you commit a
configuration to make it active on the switch
without creating a rescue configuration to back it
up. To save the most recently committed
configuration as the rescue configuration, enter the
operational mode command
configuration rescue save
.
There is no alarm or the switch is halted.
request system
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