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SFP+ 1 Bias Low Alarm threshold = 4.000mA
SFP+ 1 TX Power Low Alarm threshold = 0.251mW
SFP+ 1 RX Power Low Alarm threshold = 0.010mW
===================================
SFP+ 1 Temp High Warning threshold = 73.000C
SFP+ 1 Voltage High Warning threshold = 3.600V
Dell#
Recognize an Overtemperature Condition
An overtemperature condition occurs, for one of two reasons: the card genuinely is too hot or a sensor has malfunctioned.
Inspect cards adjacent to the one reporting the condition to discover the cause.
● 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
following system messages:
CHMGR-2-MAJOR_TEMP: Major alarm: chassis temperature high (temperature reaches or
exceeds threshold of
[value]C)
CHMGR-2-TEMP_SHUTDOWN_WARN: WARNING! temperature is [value]C; approaching shutdown
threshold of [value]C
To view the programmed alarm thresholds levels, including the shutdown value, use the show alarms threshold command.
Example of the show alarms threshold Command
Dell#show alarms threshold
-- Temperature Limits (deg C) --
---------------------------------------------------------------------------
Minor Minor Off Major Major Off Shutdown
Unit0 57 56 62 61 85
Dell#
Troubleshoot an Over-temperature Condition
To troubleshoot an over-temperature condition, use the following information.
1. Use the show environment commands to monitor the temperature levels.
2. Check air flow through the system. Ensure that 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 empty slots to control airflow for adequate system cooling.
Recognize an Under-Voltage Condition
If the system detects an under-voltage condition, it sends an alarm.
To recognize this condition, look for the following system message: %CHMGR-1-CARD_SHUTDOWN: Major alarm: Line
card 2 down - auto-shutdown due to under voltage.
This message indicates that the specified card is not receiving enough power. In response, the system first shuts down Power
over Ethernet (PoE). If the under-voltage condition persists, member units are shut down, then the master unit.
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S5000 Debugging and Diagnostics