Juniper CBL-M40-PWR-AU ユーザーズマニュアル

M40 Internet Router Hardware Guide

Figure 10 shows airflow through the chassis and the location of the cooling subsystems.

Figure 10:  Side View of Air Flow through the Chassis

Cable Management System

The cable management system is a row of staggered metal hooks located at the top of the 
chassis front (see Figure 1). Each hook is draped with a rounded plastic shield and the row is 
shielded by a removable cover. Threading PIC cables through the hooks keeps cables in place, 
reduces tangling, prevents undue stress on a cable by distributing its weight evenly, and helps 
maintain the proper bend radius for optical cables.

Power supply

and Fans

Lower impellers

Packet
Forwarding
Engine

Upper impellers

Routing
Engine

Fan tray

Bac

kplane

Air intake for
power supply cooling

Air intake for
Routing Engine cooling

Exhaust for Routing
Engine and backplane
cooling

Air intake for
Packet Forwarding
Engine cooling

Exhaust for
power supply

Exhaust for
Packet Forwarding
Engine cooling

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