Step 1: Display Current Component Alarms

Action

To display the active chassis alarms, use the following CLI command:

user@host> show chassis alarms

Sample Output

user@host> show chassis alarms

5 alarms are currently active

Alarm time               Class Description

 2002-04-16 15:09:01 PDT Major PIC 2/2 failed to initialize

 2002-04-16 15:08:40 PDT Major Power Supply A 2.5 volt output failed

 2002-04-16 15:08:40 PDT Major Power Supply A 5 volt output failed

 2002-04-16 15:08:40 PDT Major Power Supply A 3.3 volt output failed

 2002-04-16 15:08:40 PDT Major Power Supply A fan failed

What It Means

The command output displays the number of alarms currently active, the time at which the alarm began, the severity level, and an alarm description. Note the date and time of an alarm so that you can correlate it with error messages in the messages system log file. This sample command output is for a router from which the lower fan tray and the power supply have been removed, and the management Ethernet interface disconnected. The craft interface display, in alarm mode, displays a short description of the alarm. The show chassis alarms command output displays a longer description of the alarm.

Alternative Actions

To view active router alarms, you can physically look at the craft interface or use the show chassis craft-interface command.

The show chassis craft-interface command displays the most severe alarm first, the alarm indicator status, and the number of active alarms. You cannot scroll through the alarms (if there are more than two) at the command line.

user@host> show chassis craft-interface

Red alarm:     LED on, relay on

Yellow alarm:  LED off, relay off

Host OK LED:   On

Host fail LED: Off

FPCs     0  1  2  3

-------------------

Green    *  *  *  *

Red      .  .  .  .

LCD screen:

     +--------------------+

     |myrouter            |

     |5 Alarms active     |

     |R: PIC 2/2 FAILED   |

     |R: Supply A 2v FAIL |

     +--------------------+

When a red or yellow alarm occurs, the craft interface goes into alarm mode. Alarm mode preempts idle mode, displaying a message to alert you of serious alarm conditions. In alarm mode, the screen displays the following information:

• First line—Name of the router.
• Second line—Number of alarms active on the router.
• Third and fourth lines—Individual alarms, with the most severe condition shown first. Each line indicates whether the alarm is red (R) or yellow (Y).

For more information about the craft interface, see Monitoring the Craft Interface or the appropriate router hardware guide.