DELL S50V User Manual

C-Series Debugging and Diagnostics | 1175

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 

 command in EXEC mode to bring the line card back online.

In addition, Dell Force10 requires that you install blanks in all slots without a line card to control airflow 
for adequate system cooling.

If the system detects an under-voltage condition and declares an alarm. To recognize this condition, look 
for the system messages in 

.

 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 RPMs.

To troubleshoot an under-voltage condition, check that the correct number of power supplies are installed 
and their Status LEDs are lit.

In addition to the syslog buffer, FTOS buffers trace messages which are continuously written by various 
FTOS software tasks to report hardware and software events and status information. Each trace message 
provides the date, time, and name of the FTOS process. All messages are stored in a ring buffer and can be 
saved to a file either manually or automatically upon failover.

Some trace files are automatically saved and stored in the 

 directory for SW and 

HW Traces of the CP and for all Linecards. This directory contains the 

directory 

which in turn contains the saved trace buffer files.

Note: Exercise care when removing a card; if it has exceeded the major or shutdown thresholds, the card 
could be hot to the touch!

Message 8  Under-voltage Condition System Messages

%CHMGR-1-CARD_SHUTDOWN: Major alarm: Line card 2 down - auto-shutdown due to under voltage