• EIA or ETSI hole patterns in the mounting rails. Required mounting hardware is shipped with the
controller. If the rack that you plan to install the system in has metric-threaded rails, you must provide
your own metric-mounting hardware.
• Perforated top and open bottom for ventilation to prevent overheating.
• Leveling feet for stability.
The controller must not be installed in an enclosed rack because the chassis requires an unobstructed flow of
cooling air to maintain acceptable operating temperatures for its internal components. Installing the controller
in any type of enclosed rack—even with the front and back doors removed—could disrupt the air flow, trap
heat next to the chassis, and cause an over temperature condition inside the controller. If you use an enclosed
rack, make certain that there are air vents on all sides of the rack and there is proper ventilation.
Note
Guidelines for 23-in. (Telco) Racks
If needed, you can also install the Cisco Catalyst 9800-80 Wireless Controller in 23-in. (Telco) racks. For
information on the adapters needed for 23 in. racks, contact the Newton Instrument Company:
http://www.enewton.com
111 East A Street, Butner NC, USA, 27509
919 575-6426
Equipment Rack Guidelines
The placement of racks can affect personnel safety, system maintenance, and the system’s ability to operate
within the environmental characteristics described in
Table: Cisco Catalyst 9800-80 Wireless Controller
Environmental Tolerance
. Choose a proper location for the controller by following the guidelines below.
Locating for Safety
If the Cisco Catalyst 9800-80 Wireless Controller is the heaviest or the only piece of equipment in the rack,
consider installing it at or near the bottom to ensure that the rack’s center of gravity is as low as possible.
For additional information about the proper placement of electronic equipment, see the document
GR-63-CORE,
Network Equipment Building System (NEBS) Requirements: Physical Protection
.
Locating for Easy Maintenance
Keep at least 3 feet of clear space in front of and behind the rack. This space ensures that you can remove the
Cisco Catalyst 9800-80 Wireless Controller components and perform routine maintenance and upgrades easily.
Avoid installing the controller in a congested rack and consider how the routing of cables from other pieces
of equipment in the same rack might affect access to the controller’s cards.
The front and top of the chassis must remain unobstructed to ensure adequate airflow and prevent overheating
inside the chassis.
Allow the following clearances for normal system maintenance:
• At the top of the chassis—At least 3 in. (7.6 cm)
• In front of the chassis—3 to 4 ft (91.44 cm to 121.92 cm)
Cisco Catalyst 9800-80 Wireless Controller Hardware Installation Guide
31
Preparing Your Site for Installation
Guidelines for 23-in. (Telco) Racks
