Dell S4820T, Configuration Manual

Page: 1151 / 1178

• Enable environmental monitoring.
enable optic-info-update interval
Example of the
show interfaces transceiver
Command
Dell#show interfaces transceiver
-- RPM Environment Status --
Slot Status Temp Voltage
------------------------------
0 active 33C ok
1 not present
Recognize an Overtemperature Condition
An overtemperature condition occurs, for one of two reasons: the card genuinely is too hot or a sensor
has malfunctioned.
Inspect cards adjacent to the one reporting the condition to discover the cause.
• If directly adjacent cards are not normal temperature, suspect a genuine overheating condition.
• If directly adjacent cards are normal temperature, suspect a faulty sensor.
When the system detects a genuine over-temperature condition, it powers off the card. To recognize this
condition, look for the following system messages:
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
To view the programmed alarm thresholds levels, including the shutdown value, use the
show alarms
threshold
command.
Example of the
show alarms threshold
Command
Dell#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.
S-Series Debugging and Diagnostics
1151