Rack-Mounting And Air Flow Clearance Guidelines - Cisco ASR 9001 Installation Manual

Chapter 1 Preparing for Installation
Figure 1-3
When selecting a site to install the router, observe these guidelines:
•
•
See
for installation in an enclosed 4-post rack.

Rack-Mounting and Air Flow Clearance Guidelines

The router can be mounted in most 2-post, 4-post, or telco-style 19-inch equipment racks that comply
with the Electronics Industries Association (EIA) standard for equipment racks (EIA-310-D). The rack
must have at least two posts with mounting flanges to mount the router chassis. The distance between
the center lines of the mounting holes on the two mounting posts must be 18.31 inches ± 0.06 inch
(46.50 cm ± 0.15 cm).
Figure 1-4
OL-26701-01
Air Flow Path through the Cisco ASR 9001 Router
Air exhaust
Dust free area—Site should be as dust free as possible. Dusty environments can clog the power
supply intake vents, reducing the cooling air flow through the router. Clogged filters and vents can
cause an over-temperature condition in the router.
Unrestricted air flow—Allow sufficient air flow by maintaining a minimum of 6 inches (15.24 cm)
of clearance at both the inlet and exhaust openings on the chassis and the power modules. If the air
flow is blocked or restricted, or if the inlet air is too warm, an over-temperature condition can occur
within the router. Under extreme conditions, the environmental monitoring system powers off the
router to protect the components.
"Rack-Mounting and Air Flow Clearance Guidelines"
shows examples of typical 2-post, 4-post, and telco-type equipment racks.
for details on air flow clearance requirements
Cisco ASR 9001 Router Hardware Installation Guide
Site Requirement Guidelines
Room air
1-7