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Understanding Redundant Cooling System Components

Purpose

Inspect the router redundant cooling system components to ensure that air is flowing through the router to cool the components installed in the router chassis. If the router temperature exceeds a critical level, the router automatically shuts down.

What Are Redundant Cooling System Components

Redundant cooling system components are more than just one fan or impeller installed in a router to ensure that the air is flowing through the router and that an acceptable temperature is maintained to cool the components installed in the chassis.

Table 114 describes the redundant cooling system components and characteristics for each routing platform.


Table 114: Redundant Cooling System Components Characteristics Per Routing Platform
Cooling System Component
M5 and M10
M7i
M10i
M20
M40
M40e
M160
M320/T320/T640

Fan tray

1 fan tray with 4 fans

1

2

3 front
1 rear


1

1 lower

2 front
1 rear

Power supply integrated fan

_

_

_

2

2

_

Cooled by air flowing through the chassis

Cooled by air flowing through the chassis

Impellers

_

_

_

_

2 pairs

1 central

1 rear upper

1 rear lower

1 upper

2 rear

_

Fan assemblies

_

_

_

_

3

_

_

_

Air filter

_

_

_

_

1

1

1

1 front
1 rear

The following sections describe the various routing platform cooling systems:

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