Environmental Monitoring; Recognize An Over-Temperature Condition; Troubleshoot An Over-Temperature Condition - Dell Force10 Z9000 Configuration Manual

Environmental Monitoring

The Z9000 components use environmental monitoring hardware to detect transmit power readings, receive power readings, and
temperature updates.
To receive periodic power updates, enable the enable optic-info-update interval command. The output in the following
example displays the environment status of the RPM.
Example of the show interfaces transceiver Command
Dell#show interfaces
-- RPM Environment Status --
Slot Status Temp
----------------------------
0 active 33C
1 not present

Recognize an Over-Temperature Condition

An overtemperature condition occurs, for one of two reasons: the card genuinely is too hot or a sensor has malfunctioned.
To discover the cause, inspect cards near the one reporting the condition.
• If directly adjacent cards are not normal temperature, suspect a genuine overheating condition.
• If directly adjacent cards are normal temperature, suspect a faulty sensor.
When the system detects a genuine over-temperature condition, it powers off the card. To recognize this condition, look for the
system messages shown in the following example.
Dell#show alarms threshold
-- Temperature Limits (deg C) --
-------------------------------------------------
Minor Minor Off Major Major Off Shutdown
Linecard 75 70
RPM 65 60
Dell#

Troubleshoot an Over-Temperature Condition

To troubleshoot an over-temperature condition, use the following commands.
1. To monitor the temperature levels, use the show environment commands.
2. Check air flow through the system. Ensure the air ducts are clean and that all fans are working correctly.
3. After the software has determined that the temperature levels are within normal limits, you can re-power the card safely. To
bring back the line card online, use the power-on command in EXEC mode.
In addition, Dell Networking requires that you install blanks in all slots without a line card to control airflow for adequate system
cooling.
NOTE: Exercise care when removing a card; if it has exceeded the major or shutdown thresholds, the card could be hot
to the touch!
828
Z-Series Debugging and Diagnostics
Voltage
ok
80 77
75 70
85
80