Troubleshoot QFX5120 Components
Alarm Types and Severity Levels
The QFX Series switches support different alarm types and severity levels. Table 1 provides a list of alarm terms and definitions that may help you in monitoring the device.
Term |
Definition |
---|---|
Alarm |
Signal that alerts you to conditions that might prevent normal operation. On the device, alarm indicators might include an LCD panel and LEDs on the device. The LCD panel (if present on the device) displays the chassis alarm message count. Blinking amber or yellow LEDs indicate yellow 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 (red) or minor (yellow).
|
Alarm types |
Alarms include the following types:
|
Interface Alarm Messages
Interface alarms are alarms that you configure 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.
Fibre Channel alarms are valid only on QFX3500 devices.
When red alarms or major alarms are issued on QFX5100 or EX4600 switches, the alarm LED glows amber instead of red.
By default, major alarms are configured for interface link-down
conditions on the control plane and management network interfaces
in a QFabric system. 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.
If you configure a yellow alarm on the QFX3008-I Interconnect device, it is handled as a red alarm.
Creating an Emergency Boot Device for QFX Series Switches
Before you begin, you need to download the installation media image for your device and Junos OS release from https://www.juniper.net/customers/support/ .
If Junos OS on the device is damaged in some way that prevents the software from loading properly, you can use an emergency boot device to repartition the primary disk and load a fresh installation of Junos OS. Use the following procedure to create an emergency boot device.
You can create the emergency boot device on another Juniper Networks switch or router, or any laptop or desktop PC that supports Linux. The steps you take to create the emergency boot device vary, depending on the device.
To create an emergency boot device:
Chassis Component Alarm Conditions on QFX5120 Switches
This topic describes the chassis component alarm conditions on QFX5120 switches.
Table 2 lists the alarms that the chassis components can generate on QFX5120 switches, their severity levels, and the actions you can take to respond to them.
Chassis Component |
Alarm Condition |
Alarm Severity |
Remedy |
---|---|---|---|
Power supplies | A power supply is removed from the chassis. |
Major (red) |
Install a power supply in the empty slot. |
A power supply output has failed. |
Major (red) |
Check the power supply output connection. |
|
A power supply has failed. |
Major (red) |
Replace the failed power supply. |
|
An unknown power supply is installed. |
Major (red) |
Install a power supply recommended by Juniper Networks. |
|
Mix of power supplies with different airflow directions. |
Major (red) |
Do not mix power supplies with different directions for the airflow in the same chassis. |
|
Fan modules | Fan module is not installed. |
Major (red) |
Install the fan module. |
A fan module has failed. |
Major (red) |
Replace the fan module. |
|
Mix of fan modules with different airflow directions. |
Major (red) |
Do not mix fan modules with different directions for the airflow in the same chassis. |
|
Temperature | The temperature inside the chassis reaches the yellow or amber alarm limit. |
Minor (yellow or amber) |
|
The temperature inside the chassis reaches the red alarm limit. |
Major (red) |
|
|
Management Ethernet interface | Management Ethernet link is down |
Major (red) |
|
Routing Engine | Rescue configuration is not set. |
Minor (yellow or amber) |
Use the |
Feature usage requires a license or the license for the feature usage has expired. |
Minor (yellow or amber) |
Install the required license for the feature specified in the alarm. |