Troubleshoot the QFX5130 Switch

To troubleshoot a QFX5130 problem, you can use:

• Junos Evolved OS CLI

  The CLI is the primary tool for controlling and troubleshooting hardware, Junos OS Evolved, 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.

• Alarms and LEDs on the network ports, management panel, and components

  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 QFX5130 switch. For more information, see QFX5130 Management Panel.

• 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.

When a QFX5130 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 system alarms operational CLI command.

user@host> show system alarms
2 alarms currently active
Alarm time               Class  Description
2019-01-22 16:32:54 PST  Major  PEM 1 Absent
2019-01-22 16:31:04 PST  Minor  Host 0 Disk 2 Labelled incorrectly

For thermal problems, the show chassis temperature-thresholds CLI command shows the cutoff temperatures for each level of alarm:

user@host> show chassis temperature-thresholds
                                        Fan speed      Yellow alarm      Red alarm      Fire Shutdown
                                       (degrees C)      (degrees C)     (degrees C)      (degrees C)
Item                                  Normal  High   Normal  Bad fan   Normal  Bad fan     Normal
Routing Engine 0 CPU Temperature          75    79       90       90       95       95        101
FPC 0 Sensor TopMiddle                    51    56       67       67       77       77         87
FPC 0 Sensor TopFrontLeft                 46    51       62       62       72       72         82
FPC 0 Sensor TopBack                      54    59       70       70       80       80         90
FPC 0 Sensor BottomBack                   51    56       67       67       77       77         87
FPC 0 Sensor CPUTopLeft                   46    51       62       62       72       72         82
FPC 0 Sensor CPUBottomMiddle              54    59       70       70       80       80         90
FPC 0 Sensor CPUTopBackRight              46    51       62       62       72       72         82
FPC 0 Sensor TD4 Max Reading              82    89      102      102      105      105        110

You can calculate the percentage of fan real-time performance monitoring (RPM) or duty cycle from the output of the following command that you issue when you're logged in as the root user:

root@re0.~#i2cget -y -f 13 0x66 0x11
0x07

In this example, the system returned the hexadecimal value 0x07. Convert that value to decimal, which is 7 in this example. Then use this formula to get the duty cycle:

Duty cycle = (value returned + 1)*6.25%

In this example, duty cycle = (7 +1)*6.25 = 50%

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

Chassis alarms on QFX5130 switches have two severity levels:

• Major (red)—Indicates a critical situation on the switch 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 switch 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 the QFX5130 switches.

Junos OS Evolved systems, such as QFX5130-32CD/QFX5130E-32CD and QFX5130-48C, are based on a new alarm infrastructure, not all power supplies and fan alarms are supported. Table 1 shows these alarms.