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Troubleshoot the SSR400 Routers

This topic contains some common troubleshooting resources for the SSR400 routers. The topic also provides a list of alarms and explains how to fix them.

Troubleshooting Resources for SSR400 Routers

To troubleshoot the router, you use the Session Smart Router software and LEDs on the components and also contact JTAC:

  • LEDs—When the device detects an alarm condition, the alarm LED on each interface glows red, yellow, or purple depending on alarm type and severity. See SSR Chassis Manager.

  • Session Smart Router software─For information about using the Session Smart Router software to troubleshoot, see the appropriate Session Smart Router User 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.

Alarm Types and Alarm Severity

Table 1: Alarm Terms
Term

Definition

Alarm

Signal alerting you to conditions that might prevent normal operation. In cases of error detection in the device, the multicolor system LED on the front of the chassis glows red. In cases of degraded service, the system LED glows purple.

Alarm condition

Failure event that triggers an alarm.

Alarm severity

Seriousness of the alarm. The level of severity can be either major or minor.

Alarm Types

Table 2: Alarm Types
Term Definition

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 that you configure to alert you when an interface link is down. Applies to Ethernet, Fibre-channel, and management-Ethernet interfaces. You can configure a major or 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.

Alarm Severity

The presence of any major or critical alarm that causes degraded service results in the system LED glowing purple. Addressing these alarms will result in the system LED color to return to green.

Table 3: Alarm Severity
Term Definition
No critical or major alarms (green)

Indicates the system is operational. One or more minor or shelved alarms may exist; however, the alarm conditions do not impact the system operation.

Degraded system (purple)

The presence of any major or critical alarm causes degraded service and results in the system LED glowing purple. In this situation, it is recommended to access the software from the CLI and run a show alarms command. This command displays the alarms on the device and provides more access to troubleshooting capabilities. You can also access the alarms dashboard through the Session Smart Router Web Interface.