When selecting a site to install the router, observe the following guidelines:
• Dust-free area—The site should be as dust-free as possible. Dusty environments can clog the air filter
or power supply intake vents, reducing the cooling air flow through the router. Clogged filters and vents
can cause an overtemperature condition in the router.
• Unrestricted air-flow—Allow sufficient air-flow by maintaining a minimum of 6 in (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 overtemperature 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
The Cisco ASR 9010 Router, Cisco ASR 9006 Router, Cisco ASR 9904 Router, and Cisco ASR 9910 Router
can be installed 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).
Cisco ASR 9000 Series Aggregation Services Router Hardware Installation Guide
19
Preparing for Installation
Site Requirement Guidelines
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