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C2000 and C4000 Hardware Guide
Space Requirements
If you use an enclosed rack for the system, ensure that there is a minimum of 3
inches of clearance between the inner side wall and the system. This clearance space
ensures adequate air flow.
Proper Rack Installation
To confirm proper equipment rack installation, verify the following:
Cabling Recommendations
Comply with the following recommendations:
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Cabling Recommendations
Select from the following rack options:
Two-post rack A freestanding enclosed cabinet with two mounting posts
in the front
Telco-type rack Two adjacent mounting posts that you must secure to the
floor or an overhead structure
Four-post rack A freestanding open rack, either open or closed
The rack must have at least two mounting posts.
The distance between the mounting holes in the two posts must be 18.31 inches
±.063 inch, as specified in EIA-310-D.
An optional mounting kit is available for midchassis mounting. Contact your
Juniper Networks sales representative for more information.
Racks are installed and electrically grounded according to manufacturer
instructions.
Equipment racks are anchored to the floor and, when possible, anchored to the
ceiling as well.
Equipment rack installations comply with applicable local, state, and national
codes.
Use only shielded cables.
Ensure that cable distance and rate limits meet IEEE-recommended maximum
distances and speeds for signaling purposes. For information about attenuation
and power loss in optical fiber cables see:
ANSI T1.646a-1997 Telecommunications – Broadband ISDN - Physical Layer
Specification for User-Network Interfaces Including DS1/ATM (1997)
ANSI T1.646-1995 Telecommunications – Broadband ISDN - Physical Layer
Specification for User-Network Interfaces Including DS1/ATM (1995)
Ensure that power cables deliver sufficient power to the system.
Attach laser fiber connectors only to Class 1 laser devices in accordance with
IEC 60825-1, Safety of Laser Products - Part 1.
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