Installation Guide

228 Brocade MLX Series and Brocade NetIron XMR Installation Guide
53-1004195-02
Managing the cooling system
Changing the temperature polling interval
By default, the router reads the temperature sensor on each module every 60 seconds. To change the polling interval, enter the
temp-poll-period command at the global CONFIG level of the CLI.
Brocade(config)# temp-poll-period 120
Syntax: temp-poll-period <seconds>
For the seconds parameter, you can specify a value from 30 – 120.
NOTE
Adjusting temperature polling interval out of the default setting can negatively affect the efficient cooling of blades and may cause
a blade to overheat and shutdown.
Manually setting the fan speed
Typically, the management module, in conjunction with default settings of low and high temperature thresholds, determines the speed of
the two four-speed fans. (For information about changing the low and high temperature thresholds, refer to “Changing temperature
thresholds for modules and fan speeds” on page 222.) You can manually set the fan speed using the set-fan-speed command in the
Global CONFIG level of the CLI.
NOTE
Auto control of fan speed is not monitored when cards are in interactive mode. Set fan speed to high to prevent over-temp
condition.
NOTE
Setting a value other than auto or high disables auto fan control and will negatively affect the efficient cooling of blades and may
cause a blade to overheat and shutdown.
For example, to set the speed of fan 0 to medium-high, enter the following command.
LP2 Sensor 4 reading THERMAL_SENSOR_TEST_RULE_LP_2 fan-threshold lp2
LP2 Sensor 5 reading THERMAL_SENSOR_TEST_RULE_LP_XPP
2
N/A (Must not be changed)
LP2 Sensor 6 reading UNUSED UNUSED
LP2 Sensor 7 reading UNUSED UNUSED
LP2 Sensor 8 reading UNUSED UNUSED
LP2 Sensor 9 reading UNUSED UNUSED
LP2 Sensor 10 reading UNUSED UNUSED
LP2 Sensor 11 reading UNUSED UNUSED
LP2 Sensor 12 reading UNUSED UNUSED
1. The four sensors may be displayed in the show chassis command output as Sensor1, Sensor2, Sensor4, and
Sensor5. In that case, Sensor4 and Sensor 5 refer to the LP and LP XPP sensors on the second traffic manager,
TM 1.
2. The four sensors may be displayed in the show chassis command output as Sensor1, Sensor2, Sensor4, and
Sensor5. In that case, Sensor4 and Sensor 5 refer to the LP and LP XPP sensors on the second traffic manager,
TM 1.
TABLE 39 Associations between show chassis, show fan threshold, and fan-threshold commands (Continued)
show chassis command output
(sensors)
show fan-threshold command output
(thermal block)
fan-threshold command
configuration