Airflow direction
The airflow direction for VSP 8200 and the VSP 8400 is front-to-back.
Installing a fan module
The VSP 8000 Series comes with four 12–V fan modules for switch cooling.
Figure 25: Fan module
There are four sensors inside the chassis that monitor the temperature. These sensors send
information to a controller that automatically regulates the fan speed to maintain the proper
temperature.
• If any sensor exceeds its threshold, an alarm is triggered and the log is generated in the
format:
Temperature Sensor
[CPU | MAC | PHY1 | PHY2]
is (
[value]
C) has exceeded the alarm
threshold temperature (
[value]
C)
Important:
The system does not shutdown when it exceeds the threshold temperature.
• When the temperature cools by 2° below the threshold, the alarm clears and the log is
generated in the format:
Temperature Sensor
[CPU | MAC | PHY1 | PHY2]
overheat temperature alarm cleared
The following table shows the types of sensors and the corresponding threshold values:
CPU
MAC
PHY1
PHY2
55
Important:
When the CPU
temperature
exceeds this
threshold it does
not trigger any
alarm.
60
Important:
When the MAC
temperature
exceeds this
threshold it does
not trigger any
alarm.
60
60
Use this procedure if a fan fails and you have to replace it.
Installing the Virtual Services Platform 8000 Series
December 2017
Installing the VSP 8000 Series
82
