4-Post Enclosed Rack with Perforated Sides
Item c in Figure 14: Telco-Type Equipment Racks, on page 20 shows a free-standing 4-post enclosed rack
with perforated sides and two mounting posts in the front.
Do not install the Cisco ASR 9000 Series Router in any type of fully enclosed rack that does not have the
required perforated sides or doors; the router requires an unobstructed flow of cooling air to maintain
acceptable operating temperatures for its internal components. Installing the router in any type of fully
enclosed rack without proper perforation could disrupt the air-flow, trap heat next to the chassis, and cause
an overtemperature condition inside the router.
Caution
Air Flow Guidelines for Enclosed Rack Installation
Follow these guidelines when installing the Cisco ASR 9000 Series Routers in a 4-post enclosed rack.
Cisco ASR 9000 Series Aggregation Services Router Hardware Installation Guide
27
Preparing for Installation
Site Requirement Guidelines
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