Rack-Mounting Guidelines - Cisco Catalyst 6840 Series Hardware Installation Manual

Installing the Switch
Warning
This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation.
Install only in accordance with national and local wiring regulations. Statement 1045
Warning
When installing or replacing the unit, the ground connection must always be made first and disconnected last.
Statement 1046
Warning Installation of the equipment must comply with local and national electrical codes.. Statement 1074
Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or
view directly with optical instruments. Statement 1051
Before starting the installation procedures in this chapter, see the "Site Preparation Checklist" section on page
2-15 to verify that all site planning activities were completed.

Rack-Mounting Guidelines

Note
The switch is designed to be installed in standard 19-inch racks.
Before rack-mounting the switch, ensure that the equipment rack complies with the following guidelines:
• The width of the rack, measured between the two front-mounting strips or rails, must be one of the
• The depth of the rack, measured between the front- and rear-mounting strips, must be at least 19.25
• The rack must have sufficient vertical clearance to insert the chassis: 8.75 inches (22.23 cm) (5 RU)
Note
Chassis height is sometimes measured in rack units (RU or just U) where 1 RU or 1 U equals 1.75 in (44.45
mm). A typical server rack is 42 RU or 42 U in height.
Caution If the rack is on wheels, ensure that the brakes are engaged and that the rack is stabilized.
following measurements:
• 17.5 inches (44.45 cm)
• 17.75 inches (45.09 cm)
inches (48.9 cm).
Catalyst 6840-X Switch Series Hardware Installation Guide
Rack-Mounting Guidelines
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