Reference Guide

1024 | S5000 Debugging and Diagnostics
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When the system detects a genuine over-temperature condition, it powers off the unit. To recognize this
condition, look for the system messages in Message 3.
To view the programmed alarm thresholds levels, including the shutdown value, execute the
show alarms
threshold command (Figure 56-7).
Figure 56-7. show alarms threshold Command Example QUESTION: Don will send new example
Troubleshooting an over-temperature condition
To troubleshoot an over-temperature condition:
1. Use the
show environment commands to monitor the temperature levels.
2. Check air flow through the system.
3. After the software has determined that the temperature levels are within normal limits, the unit can be
re-powered safely. To bring the stack unit back 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.
Recognizing an under-voltage condition
If the system detects an under-voltage condition, it sends an alarm. To recognize this condition, look for the
system messages in Message 4.
Message 4 indicates that the specified stack unit 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 master unit.
Message 3 Over Temperature Condition System Messages QUESTION: Don will send new example
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
Message 4 Under-voltage Condition System Messages
%CHMGR-1-UNIT_SHUTDOWN: Major alarm: Stack unit 2 down - auto-shutdown due to under voltage
FTOS#show alarms threshold
-- Temperature Limits (deg C) --
---------------------------------------------------------------------------
Minor Minor Off Major Major Off Shutdown
Unit0 57 56 62 61 85
FTOS#