Alarm Severity Classes
Alarms on the MX104 routers have two severity classes:
•
Major (steady red)—Indicates a critical situation on the router that has resulted from
one of the following conditions. A red alarm condition requires immediate action.
•
One or more hardware components have failed.
•
One or more hardware components have exceeded temperature thresholds.
•
An alarm condition configured on an interface has triggered a critical warning.
•
Minor (steady yellow)—Indicates a noncritical condition on the router that, if left
unchecked, might cause an interruption in service or degradation in performance. A
minor alarm condition requires monitoring or maintenance.
A missing rescue configuration generates a minor system alarm.
Related
Documentation
Chassis Conditions That Trigger Alarms•
• Verifying Active Alarms on MX104 Routers on page 199
• Monitoring System Log Messages on MX104 Routers on page 200
Verifying Active Alarms on MX104 Routers
Purpose Use the monitoring functionality to view alarm information for the MX104 routers, including
alarm type, alarm severity, and a brief description for each active alarm on the router.
Action Observe the system LED on the front panel of the router. If the router is functioning
normally with no alarms, the system LED lights green steadily.
•
• Issue the CLI show chassis alarms command to verify the status of the router. As shown
in the sample output, the value Class indicates the severity of the alarm.
user@host> show chassis alarms
2 alarms currently active
Alarm time Class Description
2010-01-01 00:05:24 UTC Minor Loss of communication with Backup RE
2010-01-01 00:05:24 UTC Major Fan Tray Failure
When the router is functioning normally with no active alarms, the CLI displays the
output as shown:
user@host> show chassis alarms
No alarms currently active
Meaning Table 76 on page 200 lists the alarm output fields.
199Copyright © 2017, Juniper Networks, Inc.
Chapter 26: Troubleshooting Components
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