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
thresholds for modules and fan speeds
on page 211.) 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.
device# set-fan-speed med-high
For the
fan-speed
parameter, you can specify the following:
Syntax:
set fan speed
[
auto
|
high
|
low
|
med
|
med-high
]
•
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.
Monitoring the cooling system
You can monitor the following aspects of the router cooling system:
•
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
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.
device# show chassis
...
--- FANS ---
Back fan tray 1: Status = OK, Speed = LOW (50%)
Back fan tray 2: Status = OK, Speed = LOW (50%)
Back fan tray 3: Status = OK, Speed = LOW (50%)
Back fan tray 4: Status = OK, Speed = LOW (50%)
For information about all output generated by the
show chassis
command, refer to
Displaying device status and temperature readings
page 204.
Managing the cooling system
Brocade NetIron MLXe Series Hardware Installation Guide
53-1004203-04
217
Summary of Contents for NetIron MLXe Series
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