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 Voltage
----------------------------
0 active 33C ok
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 80 77 85
RPM 65 60 75 70 80
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.
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Z-Series Debugging and Diagnostics