General Site Requirements; Site Environment; Preventive Site Configuration; Configuring Equipment Racks - Cisco 2500 Series Installation And Configuration Manual

Preparing to Install the Router

General Site Requirements

This section describes the requirements your site must meet for safe installation and operation of your
system. Ensure that your site is properly prepared before beginning installation.

Site Environment

The router can be placed on a desktop or mounted in a rack or on a wall. The location of the chassis and
the layout of your equipment rack or wiring room are extremely important for proper system operation.
Equipment placed too close together, inadequate ventilation, and inaccessible panels can cause system
malfunctions and shutdowns, and can make system maintenance difficult.
When planning your site layout and equipment locations, remember the precautions described in the next
section, "Preventive Site
environmentally caused shutdowns. If you are experiencing shutdowns or unusually high errors with
your existing equipment, these precautions may help you isolate the cause of failures and prevent future
problems.

Preventive Site Configuration

The following precautions will help you plan an acceptable operating environment for your router and
will help you avoid environmentally caused equipment failures.
Electrical equipment generates heat. Ambient air temperature might not be adequate to cool
equipment to acceptable operating temperatures without adequate circulation. Ensure that the room
in which you operate your system has adequate air circulation.
Always follow the ESD-prevention procedures described in the section
Discharge Damage" earlier in this chapter to avoid damage to equipment. Damage from static
discharge can cause immediate or intermittent equipment failure.
Ensure that the chassis cover is secure. The chassis is designed to allow cooling air to flow
effectively within it. An open chassis allows air leaks, which may interrupt and redirect the flow of
cooling air from internal components.

Configuring Equipment Racks

The following information will help you plan an acceptable equipment rack configuration.
Enclosed racks must have adequate ventilation. Ensure that the rack is not overly congested
because each unit generates heat. An enclosed rack should have louvered sides and a fan to
provide cooling air.
When mounting a chassis in an open rack, ensure that the rack frame does not block the intake or
the exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is
seated all the way into the rack.
In an enclosed rack with a ventilation fan in the top, excessive heat generated by equipment near
the bottom of the rack can be drawn upward and into the intake ports of the equipment above it in
the rack. Ensure that you provide adequate ventilation for equipment at the bottom of the rack.
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Configuration" to help avoid equipment failures and reduce the possibility of
"Preventing Electrostatic