Cisco 7246 - uBR Router Hardware Installation Manual page 64

Provisioning the Cable Headend
Figure 2-3
23.25 in.
We recommend the rear bracket mounting system for four-post racks because this method enables you
Note
to keep cables from protruding too far out in front of the Cisco uBR7200 series router, and
simultaneously manage the cables at the front of the chassis with the cable-management bracket.
When planning your rack installation, consider the following information:
Install the Cisco uBR7200 series router in an open rack whenever possible. If installation in an
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enclosed rack is unavoidable, ensure that the rack has adequate ventilation.
If you plan to use an equipment shelf, ensure that the shelf is constructed to support the weight and
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dimensions of the chassis.
designing a customized shelf. We recommend that you use the rack-mount kit designed for your
particular Cisco uBR7200 series router:
–
Allow sufficient clearance around the rack for maintenance. If the rack is mobile, you can push it
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back near a wall or cabinet for normal operation and pull it out for maintenance (installing or moving
port adapters, connecting cables, or replacing or upgrading components). Otherwise, allow at least
23.25 inches (59.06 cm) of clearance at the front, and 19 inches (48.3 cm) at the back to remove any
of the field-replaceable units.
Maintain a minimum clearance of 3 inches (7.72 cm) on the right and left of the chassis for the
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cooling air inlet and exhaust ports, respectively. Avoid placing the Cisco uBR7200 series router in
an overly congested rack or directly next to another equipment rack; otherwise, the heated exhaust
air from other equipment can enter the inlet air vents and cause an overtemperature condition inside
the router.
Always install heavier equipment in the lower half of a rack to maintain a low center of gravity and
•
prevent the rack from falling.
Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide
2-18
Cisco uBR7200 Series Router Footprint and Outer Dimensions (View from Top
Looking Down)
17.38 in.
Figure 2-3
Rack-mount kit for the Cisco uBR7246VXR or Cisco uBR7246
(product number ACS-uBR7200-RMK=)
Chapter 2 Preparing the Cisco uBR7200 Series Router for Installation
21.25 in.
shows the chassis footprint, which you will need if you are
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