Brocade MLX Series and Brocade NetIron XMR Hardware ...

Managing the cooling system 7Table 49 describes default low and high temperature thresholds for each module and fan speed forBrocade MLX and Brocade NetIron XMR routers.TABLE 49 Default temperature thresholds for modules and fan speeds for Brocade MLX and Brocade NetIronXMR devicesFan speed Low temperature threshold High temperature thresholdManagement modulesHigh 77 C 85CMedium-high 67C 80CMedium 57C 70CLow –1 60CInterface modulesHigh 56 C 95CMedium-high 51C 60CMedium 46 C 55 CLow –1 50CSwitch fabric moduleHigh 72 C 85 CMedium-high 67 C 80CMedium 57C 70CLow –1 60 CFor information about checking the current low and high temperature threshold settings formodules and fan speeds, refer to “Displaying temperature thresholds for modules and fan speeds”on page 334.NOTEAdjusting fan controls out of the default setting can negatively affect the efficient cooling of bladesand may cause a blade to overheat and shutdown.You can change the default low and high temperature thresholds for a particular module and fanspeed. For example, to change the low and high thresholds of the medium fan speed for themanagement modules to 56 C and 72 s C, respectively, enter the following command at theglobal CONFIG level of the CLI.Brocade(config)# fan-threshold mp med 56 72Syntax: fan-threshold [low ] [med ][med-hi ] [high ]For the parameter, you can specify the following:• lp – Changes low and high temperature thresholds for 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 switch fabric modulesBrocade MLX Series and Brocade NetIron XMR Hardware Installation Guide 33353-1002373-02