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Monitoring Chassis Alarms for an EX8200 Switch
Purpose
This document provides information on chassis alarm conditions, and how you should respond when a certain chassis alarm is seen on your switch.
Various conditions related to the chassis components trigger yellow and red alarms. You cannot configure these conditions. See Understanding Alarm Types and Severity Levels on EX Series Switches.
Action
You can monitor chassis alarms by watching the ALM chassis status LED and using the LCD panel to gather information about the alarm. See Chassis Status LEDs in an EX8200 Switch and LCD Panel in an EX8200 Switch.
To display switch chassis alarms in the CLI, use the following command
The command output displays the number of alarms currently active, the time when the alarm began, the severity level, and an alarm description. Note the date and time of an alarm so that you can correlate it with error messages in the messages system log file.
You can also monitor chassis alarms using the J-Web interface. See Checking Active Alarms with the J-Web Interface.
Table 1 lists some of the chassis alarms that an EX8200 switch can generate.
Table 1: Chassis Alarms for EX8200 Switches
| Component | Alarm Condition | Remedy | Severity | Additional Information |
|---|---|---|---|---|
Fan tray | The fan tray has been removed from the chassis. | Install the fan tray. | Yellow/Red | The switch will eventually get too hot to operate if a fan tray is removed. Temperature alarms will follow. This alarm is expected during fan tray removal and installation. |
Fan tray | One or more fans in a fan tray is spinning below the required speed. | Replace the fan tray. | Red | Individual fans cannot be replaced; you must replace the fan tray. |
Fan tray | The fan tray’s internal connection to the switch is not functioning properly. | Remove and reinsert the fan tray. If removing and reinserting the fan tray does not resolve the problem, reboot the switch. | Red | The switch will eventually get too hot to operate if a fan tray is not operating. Temperature alarms will follow. |
Power supply | A power supply slot that contained a power supply at bootup is now empty. | Install a power supply in the empty power supply slot. | Yellow | You can ignore this alarm in cases in which a power supply slot can remain empty. You will not see this alarm if the switch is booted with an empty power supply slot. This alarm is expected during power supply removal and installation. This alarm can be triggered by a line card insertion. The alarm condition corrects itself when seen for this reason. |
Power supply | A power supply has failed due to an input or output failure, or due to temperature issues. | Replace the failed power supply. | Red | |
Power supply | A power supply’s internal connection to the switch is not operating properly. | Remove and reinsert the power supply. If removing and reinserting the power supply does not resolve the problem, reboot the switch. | Red | |
Temperature | The chassis warm temperature threshold has been exceeded and fan speeds have increased. | Adjust room temperature downward, if possible. Ensure airflow through the switch is unobstructed. | Yellow | The chassis is warm and should be cooled down. The switch is still functioning normally. To monitor temperature: user@switch>show chassis environment To monitor temperature thresholds: user@switch>show chassis temperature-thresholds |
Temperature | The chassis high temperature threshold has been exceeded and the fans are operating at full speed. | Adjust room temperature downward, if possible. Ensure airflow through the switch is unobstructed. | Red | The chassis is hot and should be cooled down. The switch might still function normally but is close to shutting down if it hasn’t already. To monitor temperature: user@switch>show chassis environment To monitor temperature thresholds: user@switch>show chassis temperature-thresholds |
Temperature | The chassis warm temperature threshold has been exceeded, and one or more fans are not operating properly. The operating fans are running at full speed. | Replace the fan tray that has the faulty fan or fans. Adjust room temperature downward, if possible. Ensure airflow through the switch is unobstructed. | Yellow | The chassis is warm and should be cooled down. The switch is still functioning normally. To monitor temperature: user@switch>show chassis environment To monitor temperature thresholds: user@switch>show chassis temperature-thresholds |
Temperature | The chassis high temperature threshold has been exceeded, and one or more fans is not operating properly. The operating fans are running at full speed. | Replace the fan tray that has the faulty fan or fans. Adjust room temperature downward, if possible. Ensure airflow through the switch is unobstructed. | Red | The chassis is hot and should be cooled down. The switch might still function normally but is close to shutting down if it hasn’t already. To monitor temperature: user@switch>show chassis environment To monitor temperature thresholds: user@switch>show chassis temperature-thresholds |
Temperature | The temperature sensor on a hardware component has failed. | Replace the hardware component. | Yellow | |
Routing Engine (RE), Switch Fabric and Routing Engine (SRE), or Switch Fabric (SF) module | The RE, SRE, or SF module has failed. | The RE, SRE, or SF module must be replaced. | Red | |
Link Status | The link to the network is down. | Check network connectivity. | Red or Yellow | The network link is disabled by default, so you might see this alarm before you connect the switch to the network. |
