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CHAPTER
2-1
Cisco Catalyst 4900M Switch Installation Guid e
78-18350-02
2
Site Planning
This chapter describes how to prepare your site for installation of the Catalyst 4900M switch and
co ntain s th ese sections:
• Site Environmental Requirements, page 2-1
• Site Power Requirements, page 2-2
• Grounding Requirements, page 2-7
• Safety Overview, page 2-7
• Site Planning Checklist, page 2-9
Note A site planning checklist is provided on page 2-8 to help ensure that you complete all site planning
activities before you install the switch.
Site Environmental Requirements
Planning a proper location for the switch and layout for your equipment rack or wiring closet is essential
for successful system operation. You should install the switch in an enclosed, secure area, ensuring that
only qualified personnel have access to the switch and control of the environment. Equipment that is
placed too closely together or that is inadequately ventilated can cause system overtemperature
conditions. In addition, poor equipment placement can make chassis panels inaccessible and difficult to
maintain.
The switch operates as a standalone system mounted in a rack in a secure wiring closet. It requires a dry,
clean, well-ventilated, and air-conditioned environment. To ensure normal operation, maintain ambient
airflow. If the airflow is blocked or restricted, or if the intake air is too warm, an overtemperature
condition can occur. The switch environmental monitor can then shut down the system to protect the
system components.
To ensure normal operation and avoid unnecessary maintenance, plan your site configuration and
prepare your site before installation. After installation, make sure that the site maintains an ambient
temperature of 0 to 40°C (32 to 104°F). It is essential to keep the area around the chassis as free from
dust and foreign conductive material (such as metal flakes from nearby construction activity) as is
possible.
Multiple switches can be rack-mounted with little or no clearance above and below the chassis. However,
when mounting a switch in a rack with other equipment, or when placing it on the floor near other
equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the
chassis.

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