Juniper Networks EX4200 사용자 설명서

Chapter 5

Mounting and Clearance Requirements

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Rack Requirements for EX3200 and EX4200 Switches

You can mount the switch on two-post racks or four-post racks.

Rack requirements consist of:

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Rack type

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Mounting bracket hole spacing

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Rack size and strength

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Rack connection to the building structure

Table 27: Rack Requirements and Specifications for the Switch

Guidelines

Rack Requirement

Use a four-post rack or a two-post rack. You can mount the switch on any four-post or two-post rack
that provides bracket holes or hole patterns spaced at 1 U (1.75 in./4.45 cm) increments and that meets
the size and strength requirements to support the weight.

A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document
number EIA-310–D) published by the Electronics Industry Association (

).

With adequate cooling air and airflow clearance, you can mount 42 switches in a four-post rack or a
two-post rack that has a height of at least 42 U. In all cases, the rack must meet the strength requirements
to support the weight.

Rack type

The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so that the switch can be
mounted in any rack that provides holes spaced at that distance.

Mounting bracket
hole spacing

Rack Requirements for EX3200 and EX4200 Switches

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