Step 2: Display Power Supply Error Messages in the System Log File

Action

To display power supply error messages that are generated in the system log file, use the following CLI command:

user@host> show log messages | match "power supply"

Sample Output

user@host> show log messages | match "power supply"

Apr  8 14:00:15 myrouter scb CM: ALARM SET: (Major) Power Supply A fan failed

Apr  8 14:00:15 myrouter alarmd[584]: Alarm cleared: Pwr supply color=RED, 
class=CHASSIS, myrouter=Power Supply A fan failed

Apr  8 14:00:18 myrouter scb CM: ALARM CLEAR: Power Supply A fan failed

Apr  8 14:00:21 myrouter alarmd[584]: Alarm set: Pwr supply color=RED, 
class=CHASSIS, reason=Power Supply A fan failed

Apr  8 14:00:23 myrouter scb CM: ALARM SET: (Major) Power Supply A fan failed

Apr  8 14:05:16 myrouter alarmd[584]: Alarm set: Pwr supply color=RED, 
class=CHASSIS, reason=Power Supply A fan failed

What It Means

The messages system log file records the time the failure or event occurred, the severity level, a code, and a message description. Use the show log messages | match "power supply" command to view only power supply error messages. Use this information to diagnose a power supply problem and to let the Juniper Networks Technical Assistance Center (JTAC) know what error messages were generated and the router events prior to the problem. For more information about system log messages, see the JUNOS     System Log Messages Reference.