Message: Blower <blower number> faulted, speed (<measured speed> RPM) below threshold.
Message Type: LOG
Severity: ERROR
Probable Cause: Indicates that the specified fan speed (in RPMs) has fallen below the minimum threshold.
Recommended Action: Replace the fan field-replaceable unit (FRU). Refer to the Hardware Reference Manual of your switch for instructions to replace the fan FRU.
Message:A blower failed or missing. Replace failed or missing blower assembly immediately.
Message Type: LOG
Severity: WARNING
Probable Cause: Indicates that a fan field-replaceable unit (FRU) has failed or has been removed. This message is often preceded by a low speed error message. This problem may overheat the switch.
Recommended Action: Replace the affected fan FRU immediately. Refer to the Hardware Reference Manual of your switch for instructions to replace the fan FRU
Message: <count> blowers failed or missing. Replace failed or missing blower assemblies immediately.
Message Type: LOG
Severity: WARNING
Probable Cause: Indicates that multiple fan field-replaceable units (FRUs) have failed or are missing on the switch. This message is often preceded by a low fan speed message.
Recommended Action: Replace the affected fan FRUs immediately. Refer to the Hardware Reference Manual of your switch for instructions to replace the fan FRU.
Message: <count> fan FRUs missing. Install fan FRUs immediately.
Message Type: LOG
Severity: WARNING
Probable Cause: Indicates that one or more fan field-replaceable units (FRUs) have been removed.
Recommended Action: Install the missing fan FRUs immediately.
Message: Current number of fans <good fans>, less than minimum of <minimum fans>. Shutdown in <seconds to shutdown> seconds. Replace fans immediately.
Message Type: LOG
Severity: CRITICAL
Probable Cause: Indicates that one or more fan field-replaceable units (FRUs) have been removed.
Recommended Action: Install the missing fan FRUs immediately.
Message: Current number of fans <good fans>, less than minimum of <minimum fans>. Shutdown now!
Message Type: LOG
Severity: CRITICAL
Probable Cause: Indicates that one or more fan field-replaceable units (FRUs) have been removed.
Recommended Action: Install the missing fan FRUs immediately.
Message: Shutdown cancelled!
Message Type: LOG
Severity: WARNING
Probable Cause: Indicates that the current number of fans is now above the minimum and shutdown has been cancelled.
Recommended Action:
Message: PSU mismatch detected. Shutdown in <seconds to shutdown> seconds. Replace PSU immediately.
Message Type: LOG
Severity: CRITICAL
Probable Cause: Indicates PSU airflow direction mismatch has been detected.
Recommended Action: Replace the mismatched PSU immediately.
Message: PSU mismatch detected. Shutdown now!
Message Type: LOG
Severity: CRITICAL
Probable Cause: Indicates PSU airflow direction mismatch has been detected.
Recommended Action: Install the correct PSUs immediately.
Message: Shutdown cancelled!
Message Type: LOG
Severity: WARNING
Probable Cause:Indicates PSU airflow direction mismatch has been resolved.
Recommended Action:
Message: High temperature (<measured temperature> C), fan speed increasing per environmental specifications.
Message Type: LOG
Severity: INFO
Probable Cause:Indicates that temperature in the system has risen above the warning threshold and the fan speed has been increased to prevent overheating of the system.
Recommended Action: Execute the show environment fan command to verify that all fans are working properly.
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: High temperature (<measured temperature> C) exceeds system temperature limit. System will shut down within 2 minutes.
Message Type: FFDC | LOG
Severity: CRITICAL
Probable Cause:Indicates that temperature in the system has risen above the critical threshold.
Recommended Action: Execute the show environment fan command to verify that all fans are working properly. Replace any deteriorating fan field-replaceable units (FRUs).
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: Current temperature (<measured temperature> C) is below shutdown threshold. System shut down cancelled.
Message Type: LOG
Severity: WARNING
Probable Cause:Indicates that temperature in the system has dropped below the critical threshold; the system will continue operation.
Recommended Action: To help prevent future problems, execute the show environment fan command to verify all fans are working properly.
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: MISMATCH in Fan airflow direction. Replace FRU with fan airflow in same direction.
Message Type: LOG
Severity: WARNING
Probable Cause:Indicates that the airflow of the fan is in the reverse direction. This may heat up the system.
Recommended Action: Replace the fan field-replaceable units (FRUs) in such a manner that the air flows in the same direction as the remaining fans. Refer to the Hardware Reference Manual of your switch for instructions to replace the fan FRUs.
Message: MISMATCH in PSU-Fan FRUs airflow direction. Replace PSU with fan airflow in same direction.
Message Type: LOG
Severity: WARNING
Probable Cause:Indicates that the airflow of the power supply unit (PSU) fan is in the reverse direction. This may heat up the system.
Recommended Action: Replace the PSU fan field-replaceable unit (FRU) in such a manner that the air flows in the same direction as the remaining fans. Refer to the Hardware Reference Manual of your switch for instructions to replace the PSU fan FRU.
Message: High temperature (<measured temperature> C) exceeds system temperature limit. System will shut down within 96 hours.
Message Type: FFDC | LOG
Severity: CRITICAL
Probable Cause:Indicates that the temperature in the system has risen above the critical threshold.
Recommended Action: Execute the show environment fan command to verify that all fans are working properly. Replace any deteriorating fan field-replaceable units (FRUs).
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: High temperature (<measured temperature> C) exceeds system temperature limit. System will shut down in <time until shutdown>.
Message Type: LOG
Severity: CRITICAL
Probable Cause:Indicates that the temperature in the system has risen above the critical threshold.
Recommended Action: Execute the show environment fan command to verify that all fans are working properly. Replace any deteriorating fan field-replaceable units (FRUs).
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: High temperature (<measured temperature> C) exceeds maximum system temperature limit. System will shut down immediately.
Message Type: FFDC | LOG
Severity: CRITICAL
Probable Cause:Indicates that the temperature in the system has risen above the maximum threshold.
Recommended Action: Manually power cycle the system to recover. Execute the show environment fan command to verify that all fans are working properly. Replace any deteriorating fan field-replaceable units (FRUs).
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: MISMATCH in Fan <unit> airflow direction. Replace FRU with fan airflow in same direction.
Message Type: LOG
Severity: WARNING
Probable Cause:Indicates that the airflow of the fan is in the reverse direction. This may heat up the system.
Recommended Action: Replace the fan field-replaceable units (FRUs) in such a manner that the air flows in the same direction as the remaining fans. Refer to the Hardware Reference Manual of your switch for instructions to replace the FRUs.
Message: MISMATCH in PSU-Fan <unit> airflow direction. Replace PSU with fan airflow in same direction.
Message Type: LOG
Severity: WARNING
Probable Cause:Indicates that the airflow of the power supply unit (PSU) is in the reverse direction. This may heat up the system.
Recommended Action: Replace the PSU fan field-replaceable units (FRU) in such a manner that the air flows in the same direction as the remaining fans. Refer to the Hardware Reference Manual of your switch for instructions to replace the PSU fan FRU.
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: <Slot Identifier>, high temperature (<measured temperature>).
Message Type: LOG
Severity: WARNING
Probable Cause:Indicates that the temperature of the specified interface module has risen above the warning threshold.
Recommended Action: Execute the show environment fan command to verify that all fans are working properly.
Make sure that the area is well ventilated and that the room temperature is within operational range of your switch.
Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: <Slot Identifier>, high temperature (<measured temperature>). Unit will be shut down in 2 minutes if temperature remains high.
Message Type: FFDC | LOG
Severity: CRITICAL
Probable Cause:Indicates that the temperature of the specified interface module has risen above the critical threshold. This usually follows a high temperature message.
Recommended Action: Execute the show environment fan command to verify that all fans are working properly.
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
If the message persists, replace the interface module.
Message: <Slot Identifier>, unit shutting down.
Message Type: FFDC | LOG
Severity: CRITICAL
Probable Cause:Indicates that the temperature of the specified interface module was above the maximum threshold for at least two minutes and therefore it has been shut down to prevent damage. This message usually follows a high temperature warning message.
Recommended Action: Execute the show environment fan command to verify that all fans are working properly.
Make sure that the area is well ventilated and the room temperature is within the operational range of your switch.
Refer to the Hardware Reference Manual of your switch for the operational temperature range.
If the message persists, replace the faulty interface module.
Message: <Slot Identifier> is below shutdown threshold. Blade shut down cancelled.
Message Type: LOG
Severity: INFO
Probable Cause:Indicates that the temperature of the specified interface module has dropped below the critical threshold; the system will continue operation.
Recommended Action: To help prevent future problems, execute the show environment fan command to verify that all fans are working properly.
Make sure that the area is well ventilated and the room temperature is within operational range of your switch. Refer to the Hardware Reference Manual of your switch for the operational temperature range.
Message: High temperature (<measured temperature> C), fan speed increasing per environmental specifications.
Message Type: LOG
Severity: INFO
Probable Cause:Indicates that temperature in the system has risen above the threshold and therefore the fan speed has been increased to prevent overheating of the system.
Recommended Action: No action is required.
Message: Fan speed changing due to optics thermal monitoring. Status: <Optics Status>
Message Type: LOG
Severity: WARNING
Probable Cause: Indicates that optics temperatures in the system have risen above the warning threshold and that the fan speed is being increased.
Recommended Action: Run the show fan command to verify all the fans are working properly.
Make sure that the area is well-ventilated and that the room temperature is within operational range of your switch. Refer to the hardware reference manual for your switch for the operational temperature range.
Message: All optics are now below the thermal warning threshold. Fan speed will resume as per thermal policy.
Message Type: LOG
Severity: INFO
Probable Cause: Indicates that optics temperatures in the system are now below the warning threshold and that the fan speed is returning to the speed dictated by the switch thermal policy.
Recommended Action: