Cisco ASR 9901 Manual page 10

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Preparing for Installation

Chassis Air Flow Guidelines

Figure 7: Air Flow Path through the Cisco ASR 9901 Router

Cisco ASR 9001 Router

Cool air is circulated through the Cisco ASR 9001 Router by one fan tray located along the right side of the

router (see the following figure).

The fan tray maintains acceptable operating temperatures for the internal components by drawing in cool air

through the vents, and circulating the air through the chassis. Each power supply is also equipped with fans

that draw cool air into the front of the power supply and force warm air out of the air exhaust.

Note

See the following section for details on air flow clearance requirements for installation in an enclosed 4-post

rack.

Preparing for Installation

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