Brocade MLX Series and Brocade NetIron XMR Hardware ...

7Managing the cooling systemFor the and parameters, you can specify any temperature inCentigrade. 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 hightemperature threshold of the lower fan speed. Brocade has established this guideline to ensure fanspeed stability.For example, if you are changing the temperature thresholds for a management module high andmedium-high fan speeds, the system will accept the following values because the low temperaturethreshold for the high speed (79 C) is lower than the high temperature threshold (82 C) for themedium-high speed.Fan speed Low temperature threshold High temperature thresholdHigh 79C 87CMedium-high 69C 82 CThe device will not accept the following values because the low temperature threshold for the highspeed (83 C) is higher than the high temperature threshold (82 C) for the medium-high speed.Fan speed Low temperature threshold High temperature thresholdHigh 83C 87 CMedium-high 69C 82 CDisplaying temperature thresholds for modules and fan speedsTo check the current settings of the low and high temperature thresholds for modules and fanspeeds, 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 - 60Fan Speed Med: 57 - 70Fan Speed Med-Hi: 67 - 80Fan Speed Hi: 77 - 85state = 0 (FAN_STATE_LOW)max_ts_shut_off_count = 1shut_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 - 30Fan Speed Med: 27 - 40Fan Speed Med-Hi: 37 - 50Fan Speed Hi: 47 - 75state = 2 (FAN_STATE_MED_HI)max_ts_shut_off_count = 1shut_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 - 50Fan Speed Med: 46 - 55Fan Speed Med-Hi: 51 - 60Fan Speed Hi: 56 - 95state = 0 (FAN_STATE_LOW)max_ts_shut_off_count = 1shut_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 - 50Fan Speed Med: 45 - 65Fan Speed Med-Hi: 60 - 75334 Brocade MLX Series and Brocade NetIron XMR Hardware Installation Guide53-1002373-02