Users Guide

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Minor Off Minor Major Off Major Shutdown
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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, to control airflow for adequate system cooling, Dell Networking requires that you install blanks in
all slots without a line card.
NOTE: Exercise care when removing a card; if it has exceeded the major or shutdown thresholds, the card
could be hot to the touch.
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: stack unit 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, line cards are shut down, then
the RPMs.
Troubleshoot an Under-Voltage Condition
To troubleshoot an under-voltage condition, check that the correct number of power supplies are installed
and their Status light emitting diodes (LEDs) are lit.
The following table lists information for SNMP traps and OIDs on the environmental monitoring hardware and
hardware components.
Table 87. SNMP Traps and OIDs
OID String OID Name Description
Receiving Power
.1.3.6.1.4.1.6027.3.10.1.2.5.1.6 chSysPortXfpRecvPower OID displays the receiving power
of the connected optics.
Transmitting power
Debugging and Diagnostics 1143