Chassis and Power Supplies
Monitoring Chassis Temperature
OmniSwitch 10K Hardware Users Guide
August 2015
page 2-27
Warning Threshold
If the temperature exceeds the switch’s user-configurable
warning threshold
, the CMM sends out a trap.
Traps are printed to the console in the form of text error messages. The CMM’s TEMP LED also displays
amber, indicating an error. (Refer to
Chapter 2, “Chassis and Power Supplies”
for CMM front panel
descriptions, including status LEDs.)
When the warning threshold has been exceeded, switch operations remain active. However, it is recom-
mended that immediate steps be taken to address the over-temperature condition.
Addressing warning threshold temperature conditions may include:
•
Checking for a chassis airflow obstruction
•
Checking the ambient room temperature
•
Checking the fan tray status using the
show fan
command. See page
page 2-28
for more information.
•
Verifying that the warning threshold has not been manually set to an otherwise common or acceptable
ambient temperature—for example, 55
degrees
Centigrade. (The default warning threshold is 70C.
This value may be configured using the
temp-threshold
command. The current set warning threshold
may be viewed using the
show temperature
command.)
Note.
Once the ambient air temperature is reduced to below the warning threshold, the CMM’s TEMP
LED automatically resets to green.
Temperature Danger Threshold
If the chassis ambient air temperature rises above the danger threshold (see specifications on
page 2-2
) the
switch will power off all Network Interface (NI) modules until the temperature conditions have been
addressed and the switch is manually booted. The danger threshold is factory-set and cannot be configured
by the user.
Addressing danger threshold temperature conditions may include:
•
Checking for a chassis airflow obstruction
•
Checking the ambient room temperature
•
Checking the fan tray status using the
show fan
command. See page
page 2-28
for more information.
Note.
When the danger threshold has been exceeded, the CMM’s TEMP LED will not reset from amber to
green until after a system boot.
