Dell N3200-ON Networking N-Series Switches CLI Reference Guide version 6.8.0 - Page 2432

show system temperature Use the show system temperature command to display information about the system temperature and fan status. Syntax show system temperature Default Configuration This command has no default configuration. Command Mode User Exec mode, Privileged Exec mode, Global Configuration mode and all Configuration submodes User Guidelines The system temperature is read from one or more sensors placed at critical locations on the PCB. Status ranges are subdivided into Ok (Cool), Noncritical (Warm), and Critical (Hot). Each status range has a lower, mid-range, and upper limit with the upper limit of the lower temperature status being the same as the lower limit of the adjacent higher temperature status. Within a range, the fans run at a reduced speed for the lower temperature part of the range and an increased speed for the higher temperature part of the range. Each range runs the fans at increasingly higher speeds for increasingly higher temperatures. Above the Critical status upper limit, the system is shut down. Typically, the shutoff temperature for the switch is 90-105° C. To avoid fan speed oscillation around a temperature limit, a small hysteresis is added to the limit such that the temperature for increasing the fan speed is higher than the temperature for lowering the fan speed. This implies that the higher fan speed (and status) is maintained until the switch is cooled 3-5 degrees below the threshold for increasing the fan speed (and possibly changing the status). The exact thresholds for increasing or lowering the fan speed are determined during thermal analysis and are different for each switch family. Switch Management Commands 2432