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show chassis alarms



Display information about the conditions that have been configured to trigger alarms.


This command has no options.

Additional Information

Chassis alarms are preset. You cannot modify them.

You cannot clear the alarms for chassis components. Instead, you must remedy the cause of the alarm. When a chassis alarm is lit, it indicates that you are running the device in a manner that we do not recommend.

On routers, you can manually silence external devices connected to the alarm relay contacts by pressing the alarm cutoff button, located on the craft interface. Silencing the device does not remove the alarm messages from the display (if present on the router) or extinguish the alarm LEDs. In addition, new alarms that occur after you silence an external device reactivate the external device.

In Junos OS Release 11.1 and later, alarms for fans also show the slot number of the fans in the CLI output.

Required Privilege Level


Output Fields

Table 1 lists the output fields for the show chassis alarms command. Output fields are listed in the approximate order in which they appear.

Table 1: show chassis alarms Output Fields

Field Name

Field Description

Alarm time

Date and time the alarm was first recorded.


Severity class for this alarm: Minor or Major.


Information about the alarm.

Sample Output

show chassis alarms

Release Information

Command introduced in Junos OS Release 11.1.