Installation Guide

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
on page 200.
TABLE 45 Fan status and speed fields
Field Description
Status The status can be one of the following:
∙ OK - The fan is functioning properly and is keeping the
temperature of each module within an acceptable temperature
range.
∙ Failed - The fan is not functioning properly or the fan control
module cannot control the fan.
Speed The speed can be one of the following:
∙ LOW - The fan is functioning at 50 percent of capacity.
∙ MEDIUM - The fan is functioning at 75 percent of capacity.
∙ MEDIUM-HIGH - The fan is functioning at 90 percent of
capacity.
∙ HIGH - The fan is functioning at 100 percent of capacity.
Managing Routers and Modules
Brocade NetIron MLXe Series Hardware Installation Guide
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