Manually Setting The Fan Speed; Monitoring The Cooling System - Brocade Communications Systems MLX Series Hardware Installation Manual

6
Managing the cooling system
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
modules and fan speeds"
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.
Brocade# set-fan-speed med-high
Syntax: set-fan-speed <fan-speed>
For the fan-speed parameter, you can specify the following:
•
•
•
•
•

Monitoring the cooling system

You can monitor the following aspects of the router cooling system:
•
•
•
Displaying fan tray status and speed
To display the status and speed of the 4-speed fans in the router, enter the show chassis command
at any level of the CLI.
242
on page 235.) You can manually set the fan speed using the
auto – The system is adjusted by the monitoring system.
high – The system sets the fan speed to high.
low – The system sets the fan speed to low.
med – The system sets the fan speed to medium.
med-high – The system sets the fan speed to medium-high.
The temperature of the fan control modules
The status and speed of the fans
The temperature warnings sent to the system log and that generate an SNMP trap
"Changing temperature thresholds for
Brocade MLX Series and NetIron XMR Hardware Installation Guide
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