Brocade Communications Systems 53-1002373-02 manual

7 Managing the cooling system

For the <low-threshold> and <high-threshold> parameters, you can specify any temperature in Centigrade. However, when changing low and high temperature thresholds for module fan speeds, remember that the low temperature threshold of a higher fan speed must be lower than the high temperature threshold of the lower fan speed. Brocade has established this guideline to ensure fan speed stability.

For example, if you are changing the temperature thresholds for a management module high and medium-high fan speeds, the system will accept the following values because the low temperature threshold for the high speed (79° C) is lower than the high temperature threshold (82 ° C) for the medium-high speed.

Fan speed	Low temperature threshold	High temperature threshold
High	79° C	87° C
Medium-high	69° C	82° C

The device will not accept the following values because the low temperature threshold for the high speed (83° C) is higher than the high temperature threshold (82° C) for the medium-high speed.

Fan speed	Low temperature threshold	High temperature threshold
High	83° C	87° C
Medium-high	69° C	82° C

Displaying temperature thresholds for modules and fan speeds

To check the current settings of the low and high temperature thresholds for modules and fan speeds, you can enter the show fan-thresholdcommand at any level of the CLI.

Brocade# show fan-threshold

=== Thermal Sensor			Control Block (THERMAL_SENSOR_TEST_RULE_MP) ===
Fan Speed	Low: -1	- 60
Fan Speed	Med: 57	- 70		80
Fan Speed	Med-Hi:	67 -
Fan Speed	Hi: 77 -		85
state = 0	(FAN_STATE_LOW)
max_ts_shut_off_count = 1
shut_off_count = 0			0 0	0 0 0 0 0 0 0 0 0 0 0 0 0
=== Thermal Sensor			Control Block (THERMAL_SENSOR_TEST_RULE_SNM) ===
Fan Speed	Low: -1	- 30
Fan Speed	Med: 27	- 40		50
Fan Speed	Med-Hi:	37 -
Fan Speed	Hi: 47 -		75
state = 2	(FAN_STATE_MED_HI)
max_ts_shut_off_count = 1
shut_off_count = 0			0 0	0 0 0 0 0 0 0 0 0 0 0 0 0
=== Thermal Sensor			Control Block (THERMAL_SENSOR_TEST_RULE_LP) ===
Fan Speed	Low: -1	- 50
Fan Speed	Med: 46	- 55		60
Fan Speed	Med-Hi:	51 -
Fan Speed	Hi: 56 -		95
state = 0	(FAN_STATE_LOW)
max_ts_shut_off_count = 1
shut_off_count = 0			0 0	0 0 0 0 0 0 0 0 0 0 0 0 0
=== Thermal Sensor			Control Block (THERMAL_SENSOR_TEST_RULE_LP_XPP) ===
Fan Speed	Low: -1	- 50
Fan Speed	Med: 45	- 65		75
Fan Speed	Med-Hi:	60 -

334	Brocade MLX Series and Brocade NetIron XMR Hardware Installation Guide
	53-1002373-02