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Managing the cooling system
TABLE 45 Fan status and speed fields
Field
Status
Speed
Displaying temperature warnings
If the temperature of a module exceeds the high temperature threshold for any of the fan speeds, the system sends a warning message
to the system log and an SNMP trap. (For more information about the low and high temperature thresholds, refer to
temperature thresholds for modules and fan speeds
configured your router to use a Syslog server or SNMP trap receiver, refer to the documentation for the server or receiver.
To display the system log, enter the show log command at any CLI level.
device# show log
Temperature log reduction
Depending on settings and temperature readings, fan speeds are changed dynamically within the following ranges: low, med, med-hi,
and high. Fan speed changes are determined by temperature thresholds set for sensors on the management modules, interface modules
and switch fabric modules. When a temperature threshold is passed upward on any module, the fan speed changes to the assigned fan
speed. This occurs even if the temperature is within the threshold for the slower fan speed on other modules. In previous versions of the
software, a log message is sent whenever a temperature threshold is crossed on any module whether the fan speed is actually increased
or not. This can result in excessive log messages.
The default behavior is a for log message to be sent only when the fan speed is actually changed, which reduces the number of
messages. A CLI option allows you to log all messages or have a single log message sent when any temperature threshold is crossed.
Details about how to set temperature thresholds and default threshold values are described in the
page 211
Configuring temperature logging
The temp log-threshold command sets the temperature logging threshold to send a single message whenever any of the thresholds are
crossed.
device(config) temp-log-threshold low
Syntax: temp log threshold [ verbose | high |low |med | med-high]
•
The verbose option generates logs whenever a temperature threshold is crossed. This is the operational mode of previous
versions of Multi-Service IronWare software and provides backward compatibility.
•
The high option generates logs only when the high threshold is crossed.
218
Description
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.
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.
on page 211.) This section describes how to view the system log. If you have
Changing
Configuring the cooling system
Brocade NetIron MLXe Series Hardware Installation Guide
on
53-1004203-04
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