Depending on the power supply module and fan module that use different air ducts, the cooling air ducts of CloudEngine 6800 series switches can be divided into front and rear air ducts or rear front air ducts.

Front and rear air ducts: The power modules and fan modules with heat dissipation air ducts are front and rear air ducts, and there is a click enlargement logo on them. The airflow of the switch is the inlet air on the power supply side and the outlet air on the port side, as shown in Figure 5 (CE6863 device is used as an example).

Rear front air duct: The power module and fan module with the heat dissipation air duct as the rear front air duct have a click enlargement logo. The airflow of the switch is inlet on the port side and outlet on the power supply side, as shown in Figure 6 (CE6863 is used as an example).

Figure 1 The airflow trend of the front and rear air ducts (port side air outlets) heat dissipation mode

Figure 2 The airflow direction of the rear front air duct (port side air intake) heat dissipation mode