Cisco ASR 5000 Series Manual - Halaman 12

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Cisco NCS 5064

Fan Modules

The Cisco NCS 5064 chassis has slots for three 2+1 redundant fan modules. The fan modules are hot-swappable.

Fan options need to be configured with the base chassis. The Cisco NCS 5064 system supports both forward

and reverse airflow. The system can work with a single fan failure. More than one fan failure leads to system

shutdown. The following table lists the fan modules that are configurable with the Cisco NCS 5064 router.

To replace the fan module, see the

Table 8: Fan Modules for the Cisco NCS 5064 router

Part Number

NCS-5064-FN-FR

NCS-5064-FN-BK

System Air flow

Power supplies and fan modules must maintain the same air flow direction. The airflow direction can be

identified based on the PID description and the handle color of both power supplies and fan modules.

Note, however, that the NC5K-PUV-1200W power supply can operate in both (front to back and back to

front) air flow directions. When this power supply is used, the Cisco IOS-XR software automatically configures

the PSU fan direction, based on the system fan modules that are inserted in the chassis. Do not mix power

supplies and fan modules with different air flow directions. Such mixing leads to a system shutdown.

Do not mix power supplies and fan modules with different air flow directions. This will lead to a system

shutdown.

Note

Filters are not mandatory. At any given time, the system may have either a port side intake filter or a port side

exhaust filter, and not both.

Overview

(Only for NCS 5064) Replacing a 2 (RU) Fan Module

Fan Module

Cisco NCS 5064 Router Fan Front to Back Airflow

Cisco NCS 5064 Router Fan Back to Front Airflow

Overview

procedure.

Color

Red

Blue