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play_arrow Fast Track: Initial Installation
- Fast Track to Rack Installation and Power
- Onboard, Configure, and Monitor QFX5200
play_arrow Overview
play_arrow Site Planning, Preparation, and Specifications
play_arrow Initial Installation and Configuration
play_arrow Maintaining Components
play_arrow Troubleshooting Hardware
- Troubleshooting the QFX5200
- https://kb.juniper.net/
play_arrow Contacting Customer Support and Returning the Chassis or Components
- Contact Customer Support to Obtain a Return Material Authorization
- Returning the QFX5200 Chassis or Components
play_arrow Safety and Compliance Information

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Troubleshooting the QFX5200

date_range 21-Apr-21

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QFX5200 Troubleshooting Resources Overview

To troubleshoot a QFX5200, you use the Junos OS CLI, alarms, and LEDs on the network ports, management panel, and components.

LEDs—When the Routing Engine detects an alarm condition, it lights the red or yellow alarm LED on the management panel as appropriate. In addition, you can also use component LEDs and network port LEDs to troubleshoot the QFX5200. For more information, see the following topics:
CLI—The CLI is the primary tool for controlling and troubleshooting hardware, Junos OS, routing protocols, and network connectivity. CLI commands display information from routing tables, information specific to routing protocols, and information about network connectivity derived from the ping and traceroute utilities. For information about using the CLI to troubleshoot Junos OS, see the appropriate Junos OS configuration guide.
JTAC—If you need assistance during troubleshooting, you can contact the Juniper Networks Technical Assistance Center (JTAC) by using the Web or by telephone. If you encounter software problems, or problems with hardware components not discussed here, contact JTAC.
Knowledge Base articles–Knowledge Base.

QFX Series Alarm Messages Overview

When a QFX Series switch detects an alarm condition, it lights the red or yellow alarm LED on the management panel as appropriate. To view a more detailed description of the alarm cause, issue the show chassis alarms CLI command:

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user@host> show chassis alarms
6 alarms currently active
Alarm time               Class  Description
2018-02-07 12:12:18 PST  Major  FPC Management1 Ethernet Link Down
2018-02-07 12:11:54 PST  Minor  FPC0: LED 3:Alarm LED Read Error
2018-02-07 12:11:54 PST  Minor  FPC0: LED 3:Alarm LED Write Error
2018-02-07 12:11:54 PST  Major  FPC0: PEM 1 Not Supported
2018-02-07 12:11:54 PST  Major  FPC0: PEM 0 Not Supported
2018-02-07 12:11:54 PST  Major  FPC0: PEM 0 Not Powered

For Junos OS Evolved systems, show system alarms CLI command indicates major and minor alarms on the system. In this example from a Junos OS Evolved system, a fan tray error is shown in slot 4.

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user@host> show system alarms
2 alarms currently active
Alarm time               Class  Description
2018-11-15 11:52:22 PST  Major  Fan Tray 4 Failure   <<<<<
2018-11-15 10:40:08 PST  Minor  Host 0 Disk 2 Labelled incorrectly

Chassis Alarm Messages

Chassis alarms indicate a failure on the device or one of its components. Chassis alarms are preset and cannot be modified.

Chassis alarms on QFX5200 devices have two severity levels:

Major (red)—Indicates a critical situation on the device that has resulted from one of the conditions described in Table 1. A red alarm condition requires immediate action.
Minor (yellow)—Indicates a noncritical condition on the device that, if left unchecked, might cause an interruption in service or degradation in performance. A yellow alarm condition requires monitoring or maintenance.

Table 1 describes the chassis alarm messages on QFX5200-32C and QFX5200-48Y devices. For QFX5200-32C-L devices see Table 2.

Table 1: Chassis Alarm Messages for QFX5200-32C and QFX5200-48Y
Component	Alarm Type	CLI Message	Recommended Action
Fans	Major (red)	`Fan Failure`	Replace the fan module and report the failure to customer support.
		`Fan I2C Failure`	Check the system log for one of the following error messages and report the message to customer support: `CM ENV Monitor: Get fan speed failed`. `fan-number is NOT spinning @ correct speed`, where `fan-number` can be 1, 2, 3, 4, or 5.
		`Fan fan-number Not Spinning`	Remove and check the fan module for obstructions, and then reinsert the fan module. If the problem persists, replace the fan module.
	Minor (yellow)	`Fan/Blower Absent`	Check the system log for the error message `fan-number Absent`, where `fan-number` can be can be 1, 2, 3, 4, or 5. Install fan modules in the slots where they are absent.
Power supplies	Major (red)	`PEM pem-number Airflow not matching Chassis Airflow`	Replace the power supply with a power supply that supports the same airflow direction as supported by the chassis.
		`PEM pem-number I2C Failure`	Check the system log for one of the following error messages and report the message to customer support: `I2C Read failed for device number`, where `number` where number ranges from 123 through 125. `PS number: Transitioning from online to offline`, where power supply `number` is 1 or 2.
		`PEM pem-number is not powered`	Check the power cord connection and reconnect, if necessary.
		`PEM pem-number is not supported`	Replace the power supply with a supported power supply.
		`PEM pem-number Not OK`	Indicates a problem with the incoming AC power or outgoing DC power. Report the error to customer support.
	Minor (yellow)	`PEM pem-number Absent`	Reboot the switch after removing one of the power supply. The switch can continue to operate with a single power supply. OR Replace the removed power supply and reboot the switch.
		`PEM pem-number Power Supply Type Mismatch`	Check whether there is a mix of AC and DC power supplies in the same chassis. Reboot the switch with only AC or only DC power supplies.
		`PEM pem-number Removed`	Replace the removed power supply or reboot the switch. The switch can continue to operate with a single power supply.
Temperature sensors	Major (red)	`sensor-location Temp Sensor Fail`	Check the system log for the following error message and report the message to customer support: `Temp sensor sensor-number failed`, where `sensor-number` ranges from 1 through 10.
	Major (red)	`sensor-location Temp Sensor Too Hot`	Check environmental conditions and alarms on other devices. Ensure that environmental factors (such as hot air blowing around the equipment) do not affect the temperature sensor. If the condition persists, the device might shut down.
	Minor (yellow)	`sensor-location Temp Sensor Too Warm`	Check environmental conditions and alarms on other devices. Ensure that environmental factors (such as hot air blowing around the equipment) do not affect the temperature sensor.
Routing Engine	Minor (yellow)	`RE RE number /var partition usage is high`	Clean up the system file storage space on the switch. For more information, see `Cleaning Up the System File Storage Space`.
	Major (red)	`RE RE number /var partition is full`	Clean up the system file storage space on the switch. For more information, see `Cleaning Up the System File Storage Space`.
	Minor (yellow)	`Rescue configuration is not set`	Use the `request system configuration rescue save` command to set the rescue configuration. For more information, see `Setting or Deleting the Rescue Configuration`.
	Minor (yellow)	`Feature usage requires a license` or `License for feature expired`	Install the required license for the feature specified in the alarm. For more information, see `Software Features That Require Licenses on the QFX Series`.
Management Ethernet interface	Major (red)	`Management Ethernet 1 Link Down`	Check whether a cable is connected to the management Ethernet interface, or whether the cable is defective. Replace the cable, if required. On models that have both em0 and em1 management interfaces available, you must connect both interfaces. If both interfaces are not connected, the alarm is raised. However, the alarm has no service impact. If you are unable to resolve the problem, open a support case by using the Case Manager link at https://www.juniper.net/support/ or call 1-888-314-5822 (tollfree, US or 1-408-745-9500 (from outside the United States).

Junos OS Evolved systems, such as QFX5200-32C-L are based on a new alarm infrastructure, not all power supplies and fan alarms are supported. Table 2 shows these alarms.

Table 2: Chassis Alarm Messages for QFX5200-32C-L
Component	Alarm Type	CLI Message	Recommended Action
Fans	Red (major)	`Fan Tray fan-tray-number Absent`	Install fan modules in the slots where they are absent.
	Red (major)	`Fan Tray fan-tray-number Failure`	Remove and check fan module for obstructions. Reinsert the fan module. If the problem persists, replace the fan module.
	Yellow (minor)	`FAN fan-number Fan Sensor Fail`	Remove and check fan module for obstructions. Reinsert the fan module. If the problem persists, check the system log for the message related to the sensor and report the message to customer service.
Power Supplies	Red (major)	`PEM pem-number Not Powered`	Install a power supply into the empty slot and ensure the power supply is powered.
Temperature sensors	Major (red)	`FPC 0 Temperature Hot`	Check environmental conditions and alarms on other devices. Ensure that environmental factors (such as hot air blowing around the equipment) do not affect the temperature sensor. if the condition persists, the device might shut down.
	Minor (yellow)	`FPC 0 Temperature Warm`	Check environmental conditions and alarms on other devices. Ensure that environmental factors (such as hot air blowing around the equipment) do not affect the temperature sensor.
	Minor (yellow)	`FPC 0 Temp Sensor Fail`	Check the system log for the following error message and report the message to customer support:
Management Ethernet interface	Major (red)	`Management interface management-interface-name down on node`	Check whether a cable is connected to the management Ethernet interface, or whether the cable is defective. Replace the cable, if required.

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QFX5200 Switch Hardware Guide

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Troubleshooting the QFX5200

QFX5200 Troubleshooting Resources Overview

QFX Series Alarm Messages Overview

Chassis Alarm Messages

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QFX5200 Switch Hardware Guide

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Troubleshooting the QFX5200

QFX5200 Troubleshooting Resources Overview

See Also

QFX Series Alarm Messages Overview

Chassis Alarm Messages

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