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Alarm Messages

Understanding Alarms

The MX10008 router supports different alarm types and severity levels. Table 1 provides a list of alarm terms and definitions that can help you in monitoring the device.

Table 1: Alarm Terms and Definitions

Term

Definition

Alarm

Signal alerting you to conditions that might prevent normal operation. On the device, alarm indicators might include the LCD panel and LEDs on the device. The LCD panel (if present on the device) displays the chassis alarm message count. Blinking yellow LEDs indicate minor alarm conditions for chassis components.

Alarm condition

Failure event that triggers an alarm.

Alarm severity levels

Seriousness of the alarm. The level of severity can be either major (yellow) or minor (red).

  • Major (yellow or amber)—Indicates a critical situation on the device that has resulted from one of the following conditions.

    A yellow 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 (red)—Indicates a noncritical condition on the device that, if left ignored or unaddressed, might cause an interruption in service or degradation in performance.

    A red alarm condition requires monitoring or maintenance. For example, a missing rescue configuration generates a red system alarm.

Alarm types

Alarms include the following types:

  • Chassis alarm—Predefined alarm triggered by a physical condition on the device such as a power supply failure or excessive component temperature.

  • Interface alarm—Alarm you configure to alert you when an interface link is down. Applies to ethernet, fibre-channel, and management-ethernet interfaces. You can configure a red (major) or yellow (minor) alarm for the link-down condition, or have the condition ignored.

  • System alarm—Predefined alarm that might be triggered by a missing rescue configuration, failure to install a license for a licensed software feature, or high disk usage.

See Also

  • show chassis alarms
  • show system alarms

Interface Alarm Messages

You configure interface alarms to alert you when an interface is down.

To configure an interface link-down condition to trigger a red or yellow alarm, or to configure the link-down condition to be ignored, use the alarm statement at the [edit chassis] hierarchy level. You can specify the ethernet, fibre-channel, or management-ethernet interface type.

By default, major alarms are configured for interface link-down conditions on the control plane and management network interfaces in an MX10008 router. The link-down alarms indicate that connectivity to the control plane network is down. You can configure these alarms to be ignored using the alarm statement at the [edit chassis] hierarchy level.

Table 2 describes the chassis alarm messages on the router.

Table 2: Chassis Component Alarm Conditions

Chassis Component

Alarm Condition

Alarm Severity

Remedy
Routing Control Board

An RCB has failed.

Major (red)

Replace the failed RCB.

An RCB has been removed.

Minor (yellow)

Install an RCB in the empty slot.
Line cards

A line card is offline.

Minor (yellow)

Check the line card. Remove and reinstall the line card. If this fails, replace the failed card.

A line card has failed.

Major (red)

Replace the failed line card.

A line card has been removed.

Major (red)

Install a line card in the empty slot.
Fan trays

A fan tray has been removed from the chassis.

Major (red)

Install the missing fan tray.

One fan in the chassis is not spinning or is spinning below required speed.

Major (red)

Replace the fan tray.

A fan is not receiving power from the fan tray controller.

Major (red)

Check and replace the failed fan tray controller if required.
Fan Tray Controller

A fan tray controller has failed.

Minor (yellow)

Check and replace the failed fan tray controller if required.

One of the fan tray controllers in the chassis is not receiving enough power.

Major (red)

Check the power supply.
Switch Interface Boards (SIBs)

One of the SIBs has failed.

Minor (yellow)

Check the below:

  • The SIB is not receiving power.

  • The fan tray controller is having a power problem.
Ethernet

The Ethernet management interface on the RCB is down.

Minor (yellow)

  • Check the interface cable connection.

  • Reboot the system.

  • If the alarm recurs, open a support case using the Case Manager link at https://www.juniper.net/support/ or call 1-888-314-5822 (toll free, US & Canada) or 1-408-745-9500 (from outside the United States).
Hot swapping

Too many hot-swap interrupts are occurring.

Major (red)

Replace the failed components.
Power supplies

A power supply has been removed from the chassis.

Minor (yellow)

Install a power supply in the empty slot.

A power supply has a high temperature.

Major (red)

Replace the failed power supply.

A power supply input has failed.

Major (red)

Check power supply input connection and the power cord.

A power supply output has failed.

Major (red)

Check power supply output connection.

A power supply has failed.

Major (red)

Replace the failed power supply.

AC and DC power supplies are installed.

Major (red)

Do not mix AC and DC power supplies.

Inadequate number of power supplies.

Major (red)

Install an additional power supply.
Current share failure Major (red) PSM state remains online during current share failure. When a current share failure occurs on devices with third-generation power supplies, the system does not indicate the failure on the LED or change the PSM state to Fault. Instead, the system keeps the PSM state online and raises an alarm.

No action required.

mcu_access_failure

 Major (red)

If the mcu_access_failure is displayed but does not show the state as fault, and if the PSM is delivering the output power, it suggests an environmental failure of the PSM.

If you have enabled the PSM watchdog, then as a resiliency action, the PSM will be turned off.
PSM I2C SCL failure Major (red) In a 8-slot chassis, if the SCL (Serial Clock Line) pin of I2C shorts to GND (Ground) pin in parent/primary PSM0 due to clock stretching on the PSM0, it impacts transactions on all the child/secondary PSMs. You will not be able to see the status of the PSM due to “hwdre” failure. In such cases, isolate the faulty PSM by removing and identifying the faulty PSM iteratively, and replace the faulty PSM. If we interchange the PSMs and still fault remains on all PSMs then it is possible that fault may exist in the chassis/midplane; you may then raise an RMA for this.

Example: If you are seeing fault at PSM0 and its subsequent PSMs (PSM1 to PSM3) then the fault may lie in PSM0. You need interchange the PSM0 with any other PSM from the same primary (PSM1, PSM2, or PSM3) and check whether it is rectified.

If you are seeing fault at PSM4 and its subsequent child/secondary PSMs (PSM5) then the fault may lie in PSM4. You need interchange the PSM4 with PSM5 (as PSM4 is the primary PSM) and check whether it is rectified.
Short pin failure Major (red) A short pin failure allows the power supply to detect whether it is properly connected to the mid-plane. When detected, the Power Supply Module (PSM) turns on the output. Since this issue occurs external to the PSM, it is not considered a PSM failure. Consequently, the fault LED does not turn red.

Try to re-insert and if error persists, return the PSM (RMA) as there is no midplane connectivity.
Single channel pfc-failure Major (red) If a PFC failure happens on a single channel, the fault LED will not turn red and PSM will remain in online state as PSM output is still ON. However, if all four channels fail, the fault LED will turn red and PSM will be moved to fault state.

No action required.
Temperature

The chassis temperature has exceeded 104° F (40° C), the fans have been turned on to full speed, and one or more fans have failed.

Minor (yellow)

  • Check room temperature.

  • Check airflow.

  • Replace the fan tray.

The chassis temperature has exceeded 149° F (65° C), and the fans have been turned on to full speed.

Minor (yellow)

  • Check room temperature.

  • Check airflow.

  • Check the fans.

The chassis temperature has exceeded 149° F (65° C), and a fan has failed. If this condition persists for more than 90 seconds, the router will shut down.

Major (red)

  • Check room temperature.

  • Check airflow.

  • Check the fan.

Chassis temperature has exceeded 167° F (75° C). If this condition persists for more than 90 seconds, the router will shut down.

Major (red)

  • Check room temperature.

  • Check airflow.

  • Check fan.

The temperature sensor has failed.

Major (red)

Open a support case using the Case Manager link at https://www.juniper.net/support/ or call 1-888-314-5822 (toll free, US & Canada) or 1-408-745-9500 (from outside the United States).