Reference Guide

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 ow 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 slots without a line card to control airow 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.
Example of the show enivornment Command
Dell#show environment
-- Unit Environment Status --
Unit Status Temp Voltage TempStatus
---------------------------------------------------------------------------
* 0 online 59C ok 2
* Management Unit
-- Thermal Sensor Readings (deg C) --
Unit Sensor0 Sensor1 Sensor2
-------------------------------
0 55 45 58
Dell#
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 specied card is not receiving enough power. In response, the system rst shuts down Power over
Ethernet (PoE).
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, which provide information about environmental monitoring hardware
and hardware components.
Table 38. 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
.1.3.6.1.4.1.6027.3.10.1.2.5.1.8 chSysPortXfpTxPower OID displays the transmitting power of the
connected optics.
Debugging and Diagnostics
241