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Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
OL-32185-02
Chapter 2 Cisco 4000 Series ISRs Preinstallation
Rack Requirements
Physical Characteristics
Be familiar with the physical characteristics of the Cisco 4000 Series ISRs to assist you in placing the
system in the proper location.For more information on the physical characteristics of Cisco 4000 Series
Integrated Services Routers (ISRs), refer to the
Cisco 4000 Series Integrated Services Routers datasheet
The following list describes additional Cisco 4000 Series ISRs chassis characteristics:
•
Cable-management brackets at each Cisco 4000 Series ISRs locations can hold 16 ports of
STP/UTP RJ 45 cables
•
Cable-management brackets allow a bend radius of 1.5 inches for cables
•
Rack-mount brackets that have optional mounting location. It allow you to mount on a front to rear
rail variance distance of 15.50/394mm to 19.00/482.6mm
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:
•
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 at 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.
Router Environmental Requirements
Cisco 4000 Series ISRss can be placed on a desktop or installed in a rack. 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
. If you are currently experiencing shutdowns or an unusually high number of errors
with your existing equipment, these precautions and recommendations may help you to isolate the cause
of failure and prevent future problems.
•
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 the ESD-prevention procedures described in the
“Prevent Electrostatic Discharge
to avoid damage to equipment. Damage from static discharge can
cause immediate or intermittent equipment failure.