Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.14.1.0 - Page 1113
Troubleshoot an Over-temperature Condition, Recognize an Under-Voltage Condition, Troubleshoot an
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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 DellEMC#show alarms threshold -- Temperature Limits (deg C) -- Minor Off Minor Major Off Major Shutdown Unit2 55 60 75 80 85 Minor Off Minor Major Off Major Shutdown Unit3 55 60 75 80 85 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 EMC 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 127. SNMP Traps and OIDs OID String Receiving Power .1.3.6.1.4.1.6027.3.10.1.2.5.1.6 OID Name chSysPortXfpRecvPower Description OID displays the receiving power of the connected optics. Debugging and Diagnostics 1113
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