Router Environmental Requirements; General Site Requirements; Rack Requirements - Cisco 2900 Series Installation Manual

Chapter 2 Preparing for Router Installation

General Site Requirements

This section describes the requirements your site must meet for safe installation and operation of your
router. Ensure that the site is properly prepared before beginning installation. If you are experiencing
shutdowns or unusually high errors with your existing equipment, this section can also help you isolate
the cause of failures and prevent future problems.

Rack Requirements

Some Cisco routers include brackets for use with a 19-inch rack or, if specified in your order, optional
larger brackets for use with a 23-inch rack.
The following information can help you plan your equipment rack configuration:
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Router Environmental Requirements

Cisco 2900 series routers can be placed on a desktop or installed in a rack. The Cisco 2901 router can
also be wall mounted. The location of your router and the layout of your equipment rack or wiring room
are extremely important considerations for proper operation. Equipment placed too close together,
inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make
maintenance difficult. Plan for access to both front and rear panels of the router.
When planning your site layout and equipment locations, refer to the
section on page
of errors with your existing equipment, these precautions and recommendations may help you isolate the
cause of failure and prevent future problems.
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Allow clearance around the rack for maintenance.
Allow at least one rack unit of vertical space between routers.
Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because each
router generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air.
Heat generated by equipment near the bottom of the rack can be drawn upward into the intake ports
of the equipment above it.
When mounting a chassis in an open rack, ensure that the rack frame does not block the intake or
exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is seated
in the rack.
2-5, section. If you are currently experiencing shutdowns or an unusually high number
Ensure that the room where your router operates has adequate air circulation. Electrical equipment
generates heat. Without adequate air circulation, ambient air temperature may not cool equipment
to acceptable operating temperatures.
Always follow ESD-prevention procedures described in the
Damage" section on page 2-4
cause immediate or intermittent equipment failure.
Ensure that the chassis cover and module rear panels are secure. All empty network module slots,
interface card slots, and power supply bays must have filler panels installed. The chassis is designed
to allow cooling air to flow within it, through specially designed cooling slots. A chassis with
uncovered openings permits air leaks, which may interrupt and reduce the flow of air across internal
components.
to avoid damage to equipment. Damage from static discharge can
Cisco 2900 Series and 3900 Series Hardware Installation Guide
General Site Requirements
"General Site Requirements"
"Preventing Electrostatic Discharge
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