Brocade MLXe Series Hardware Installation Guide
167
53-1003030-01
Managing the cooling system
5
•
lp – Changes low and high temperature thresholds for Gen 1 interface modules
•
lp2 – Changes low and high temperature thresholds for Gen 2 interface modules
•
mp – Changes low and high temperature thresholds for management modules
•
mp-cpu – Changes low and high temperature thresholds for the management module CPU
•
switch-fabric – Changes low and high temperature thresholds for non-high-speed switch fabric
modules
•
switch-fabric-g2 – Changes low and high temperature thresholds for high speed switch fabric
modules (hSFM)
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.
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.
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-threshold command 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
Fan Speed Med-Hi: 67 - 80
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
Fan Speed Med-Hi: 37 - 50
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 temperature threshold
High temperature threshold
High
79
°
C
87
°
C
Medium-high
69
°
C
82
°
C
Fan speed
Low temperature threshold
High temperature threshold
High
83
°
C
87
°
C
Medium-high
69
°
C
82
°
C
