Troubleshoot An Over-Temperature Condition; Recognize An Under-Voltage Condition - Dell Force10 S4810P Configuration Manual

To view the programmed alarm thresholds levels, including the shutdown value, execute the
command shown in
threshold
Figure 14-7. show alarms threshold Command Example
FTOS#show alarms threshold
-- Temperature Limits (deg C)
---------------------------------------------------------------
Minor
Linecard 75
RPM 65
FTOS#

Troubleshoot an over-temperature condition

To troubleshoot an over-temperature condition:
1. Use the
show environment
2. Check air flow through the system. On the C-Series, air flows sideways from right to left. Ensure the
air ducts are clean and that all fans are working correctly.
3. Once the software has determined that the temperature levels are within normal limits, the card can be
re-powered safely. Use the
In addition, Dell Force10 requires that you install blanks in all slots without a line card to control airflow
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!

Recognize an under-voltage condition

If the system detects an under-voltage condition and declares an alarm. To recognize this condition, look
for the system messages in
Message 4 Under-voltage Condition System Messages
%CHMGR-1-CARD_SHUTDOWN: Major alarm: Line card 2 down - auto-shutdown due to under voltage
This message in
system first shuts down Power over Ethernet (PoE). If the under-voltage condition persists, line cards are
shut down, then RPMs.
Figure 14-7.
--
Minor Off Major
70 80
60 75
commands to monitor the temperature levels.
power-on
Message 4.
Message 4 indicates that the specified card is not receiving enough power . In response, the
Major Off Shutdown
77 85
70 80
command in EXEC mode to bring the line card back online.
show alarms
S-Series Debugging and Diagnostics | 361