Cisco Catalyst 9400 User Manual

Power down the chassis.Case 4. Temperature emergency on the active
supervisor module.
System Alarms
Any system has two types of alarms: major and minor. A major alarm indicates a critical problem that could
lead to system shutdown. A minor alarm is informational—it alerts you to a problem that could become critical
if corrective action is not taken.
The following table lists the possible environment alarms.
Table 21: Possible Environmental Alarms
minorA temperature sensor over its warning threshold
majorA temperature sensor over its critical threshold
majorA temperature sensor over its shutdown threshold
minorA partial fan failure
majorA complete fan failure
A complete fan failure alarm does not
result in system shutdown.
Note
Fan failure alarms are issued as soon as the fan failure condition is detected and are canceled when the fan
failure condition clears. Temperature alarms are issued as soon as the temperature reaches the threshold
temperature. An LED on the supervisor module indicates whether an alarm has been issued.
When the system issues a major alarm, it starts a timer whose duration depends on the alarm. If the alarm is
not canceled before the timer expires, the system takes emergency action to protect itself from the effects of
overheating. The timer values and the emergency actions depend on the type of supervisor module.
Refer to the Hardware Installation Guide for information on LEDs, including the startup behavior of the
supervisor module system LED.
Note
Table 22: Alarms on Supervisor Module
Description and ActionSupervisor LED ColorAlarm TypeEvent
Syslog message displays
when the alarm is issued.
RedMajorCard temperature exceeds
the critical threshold.
Syslog message displays
when the alarm is issued.
RedMajorCard temperature exceeds
the shutdown threshold.
Syslog message displays
when the alarm is issued.
OrangeMinorChassis temperature
exceeds the warning
threshold.
System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)
225
Environmental Monitoring and Power Management
System Alarms

Cisco Catalyst 9400 Specifications

General

Brand	Cisco
Model	Catalyst 9400
Category	Switch
Language	English