Troubleshooting the QFX5200
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.
See Also
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:
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.
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.
Component |
Alarm Type |
CLI Message |
Recommended Action |
---|---|---|---|
Fans |
Major (red) |
|
Replace the fan module and report the failure to customer support. |
|
Check the system log for one of the following error messages and report the message to customer support:
|
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Remove and check the fan module for obstructions, and then reinsert the fan module. If the problem persists, replace the fan module. |
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Minor (yellow) |
|
Check the system log for the error message Install fan modules in the slots where they are absent. |
|
Power supplies |
Major (red) |
|
Replace the power supply with a power supply that supports the same airflow direction as supported by the chassis. |
|
Check the system log for one of the following error messages and report the message to customer support:
|
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Check the power cord connection and reconnect, if necessary. |
||
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Replace the power supply with a supported power supply. |
||
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Indicates a problem with the incoming AC power or outgoing DC power. Report the error to customer support. |
||
Minor (yellow) |
|
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. |
|
|
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. |
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Replace the removed power supply or reboot the switch. The switch can continue to operate with a single power supply. |
||
Temperature sensors |
Major (red) |
|
Check the system log for the following error message and report the message to customer support:
|
|
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. |
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Minor (yellow) |
|
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) |
|
Clean up the system file storage space on the switch. For more information, see Cleaning Up the System File Storage Space. |
Major (red) |
|
Clean up the system file storage space on the switch. For more information, see Cleaning Up the System File Storage Space. |
|
Minor (yellow) |
|
Use the |
|
or
|
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) |
|
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.
Component |
Alarm Type |
CLI Message |
Recommended Action |
---|---|---|---|
Fans |
Red (major) |
|
Install fan modules in the slots where they are absent. |
|
Remove and check fan module for obstructions. Reinsert the fan module. If the problem persists, replace the fan module. |
||
Yellow (minor) |
|
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) |
|
Install a power supply into the empty slot and ensure the power supply is powered. |
Temperature sensors |
Major (red) |
|
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) |
|
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. |
|
|
Check the system log for the following error message and report the message to customer support: |
||
Management Ethernet interface |
Major (red) |
|
Check whether a cable is connected to the management Ethernet interface, or whether the cable is defective. Replace the cable, if required. |