Fan Module Status; Table 11: Fan Module Led - Juniper QFX5100 Hardware Manual

QFX5100 Switch Hardware Guide

Fan Module Status

Table 11: Fan Module LED

LED State
Solid Green
Blinking Amber
44
Mixing components with different airflows in the same chassis hampers the performance
of the cooling system of the switch and leads to overheating of the chassis.
CAUTION: The system raises an alarm if a fan module fails or if the ambient
temperature inside the chassis rises above the acceptable range. If the
temperature inside the chassis rises above the threshold temperature, the
system shuts down automatically.
Do not mix fan modules with different wattage. Only use the replacement fan modules
that are designed for use with your product number. See
correct part number for your QFX5100 device.
CAUTION: Do not mix AC and DC power supplies in the same chassis.
However if you need to convert a QFX5100 device to have a different airflow, you can
change the airflow pattern. To convert an
SKU or an product SKU to a
AIR OUT
and power supplies at one time to use the new direction. The system raises an alarm
when the system is converted, which is normal.
You can check the status of fan modules through the
by looking at the LEDs next to each fan module.
Each switch has a Status LED (labeled
corresponding fan module slot. It indicates the status of all the fan modules.
Table 11 on page 44 describes the Status LED on the fan module in a QFX5100 device.
Description
The individual fan module is present. After the hardware senses the fan module, software ensures
the airflow is consistent with the other fan modules and that it is functioning correctly.
Indicates one of the following:
The fan module is not present.
The fan module is not functioning normally.
Under normal operating conditions, the fan modules operate at a moderate speed.
Temperature sensors in the chassis monitor the temperature within the chassis.
The system raises an alarm if a fan module fails or if the ambient temperature inside the
chassis rises above the acceptable range. If the temperature inside the chassis rises
above the threshold temperature, the system shuts down automatically.
Table 10 on page 41
product SKU to an
AIR IN
product SKU, you must replace all of the fans
AIR IN
show system alarms
) for each fan module on the left side of the
ST
Copyright © 2016, Juniper Networks, Inc.
for the
product
AIR OUT
command or