Brocade Communications Systems Brocade MLX Series and Brocade Netlron XMR 53-1002373-02 User Manual
Page 351
Brocade MLX Series and Brocade NetIron XMR Hardware Installation Guide
333
53-1002373-02
Managing the cooling system
7
describes default low and high temperature thresholds for each module and fan speed for
Brocade MLX and Brocade NetIron XMR routers.
For information about checking the current low and high temperature threshold settings for
modules and fan speeds, refer to
“Displaying temperature thresholds for modules and fan speeds”
NOTE
Adjusting fan controls out of the default setting can negatively affect the efficient cooling of blades
and may cause a blade to overheat and shutdown.
You can change the default low and high temperature thresholds for a particular module and fan
speed. For example, to change the low and high thresholds of the medium fan speed for the
management modules to 56
C and 72
s C, respectively, enter the following command at the
global CONFIG level of the CLI.
Brocade(config)# fan-threshold mp med 56 72
Syntax: fan-threshold <module> [low <high-threshold>] [med <low-threshold> <high-threshold>]
[med-hi <low-threshold> <high-threshold>] [high <low-threshold> <high-threshold>]
For the <module> 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 modules
TABLE 49
Default temperature thresholds for modules and fan speeds for Brocade MLX and Brocade NetIron
XMR devices
Fan speed
Low temperature threshold
High temperature threshold
Management modules
High
77
C
85
C
Medium-high
67
C
80
C
Medium
57
C
70
C
Low
–1
60
C
Interface modules
High
56
C
95
C
Medium-high
51
C
60
C
Medium
46
C
55
C
Low
–1
50
C
Switch fabric module
High
72
C
85
C
Medium-high
67
C
80
C
Medium
57
C
70
C
Low
–1
60
C