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M7i Cooling System Overview


The router cooling system consists of a fan tray, located along the left side of the chassis, that provides side-to-side cooling (see Figure 2). It connects directly to the router midplane. The fan tray is a single unit containing four individually fault-tolerant fans. If a single fan fails, the remaining fans continue to function indefinitely.

The fan tray is hot-removable and hot-insertable.

Figure 1: Fan Tray
Fan Tray

M7i Airflow Through the Chassis

Figure 2 shows airflow through the chassis and the location of the fan tray.

Figure 2: Airflow Through the Chassis
Airflow Through the Chassis