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Using Alarms

On J-series routing platforms, the View Alarms page alerts you about conditions that might prevent the routing platform from operating normally. The page displays information about active alarms, the severity of the alarms, and a brief description for each active alarm. An alarm indicates that you are running the routing platform in a manner that is not recommended. When you see an alarm, you must check its cause and remedy it.

Alternatively, you can display alarm information by entering the following commands at the J-Web CLI terminal:

show chassis alarms
show system alarms

For more information, see Using the CLI Terminal. For more information about the commands, see the JUNOS System Basics and Services Command Reference.

Active Alarms Information

The View Alarms page displays the following types of alarms. You can set the conditions that trigger alarms on an interface. Chassis and system alarm conditions are preset.

Interface alarms—Indicate a problem in the state of the physical links on a fixed or installed Physical Interface Module (PIM), such as a link failure or a missing signal. To enable interface alarms, you must configure them.
Chassis alarms—Indicate a failure on the routing platform or one of its component, such as a power supply failure, excessive component temperature, or media failure. Chassis alarms are preset and cannot be modified.
System alarms—Indicate a missing rescue configuration or software license, where valid. System alarms are preset and cannot be modified.

If the J-series routing platform has active alarms and you have not displayed the View Alarms page, Alarms in the taskbar appears in red. After you view the alarms, Alarms returns to white. If new alarms become active, Alarms is red until you again display the View Alarms page.

Alarm Severity

Alarms displayed on the View Alarms page can have the following two severity levels:

Major (red)—Indicates a critical situation on the routing platform 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 (yellow)—Indicates a noncritical condition on the routing platform that, if left unchecked, might cause an interruption in service or degradation in performance. A yellow alarm condition requires monitoring or maintenance.
A missing rescue configuration or software license generates a yellow system alarm.

Displaying Alarm Descriptions

All active alarms are displayed as links on the View Alarms page. Clicking the link opens a page with detailed description of the alarm. This description provides more information about the probable cause or solution for the condition that caused the alarm (see Sample Task—Viewing Alarms). The description also provides the date and time when the failure was detected. Note the date and time of an alarm so that you can correlate it with error messages on the View Events page or in the messages system log file.

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