Hardware and Interface Alarm Messages

When the Routing Engine detects an alarm condition, it lights the red or yellow alarm LED on the craft interface as appropriate, and trips the corresponding alarm relay contact on the craft interface. To view a more detailed description of the alarm cause, issue the show chassis alarms CLI command:

There are two classes of alarm messages:

• Chassis alarms—Indicate a problem with a chassis component such as the cooling system or power supplies, as described in Table 21.
• Interface alarms—Indicate a problem with a specific network interface, as described in Table 22.

  In both tables, the text in the column labeled “CLI Message” appears in the output from the show chassis alarms command.

  Table 21: Chassis Alarm Messages

  Component	CLI Message
  Craft interface	Craft interface not responding
  Fans	fan-name removed
  	fan-name stopped spinning
  	Too few fans installed or working
  FPCs	Too many recoverable errors
  	Too many unrecoverable errors
  Power supplies	Power supply x not providing power
  	Power supply x 2.5V failed
  	Power supply x 3.3V failed
  	Power supply x 5V failed
  Temperature sensors	temperature-sensor temperature sensor failed
  	A temperature sensor exceeds 54 degrees C