Cisco XR 12416 - Manual (Page 11)

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Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide
OL-17440-01
Chapter 2 Preparing for Installation
Site Requirement Guidelines
Site Layout and Equipment Dimensions
To help maintain trouble-free operation, adhere to the following precautions when
planning your rack installation:
• Ensure the site of the rack includes provisions for source AC or DC power,
grounding, and network interface cables.
• Allow sufficient space to work around the rack during the installation. You
need:
– At least 3 feet adjacent to the rack to move, align, and insert the chassis.
– At least 2 feet in front of the power shelf to insert power entry modules.
• Maintain at least 24 inches (61 cm) of clearance in front of and behind the
chassis for maintenance after installation.
• To mount the router between two posts or rails, the usable aperture (the width
between the inner edges of the two mounting flanges) must be at least
17.7 inches (45.0 cm).
• When fully populated with cards, the router can weigh as much as 440 lb
(200 kg). Mount the router so that the bottom of the router chassis is no higher
than 10 inches (25.4 cm) from the floor to keep the center of gravity of the
rack as low as possible. To maintain equipment rack stability and to ensure
your safety, make sure you install any stabilizing devices provided before you
install the router.
• If you use a telco-style rack, the weight of the chassis is cantilevered off of
the two rack posts. Make sure that:
– The weight of the router does not make the frame unstable.
– The frame is bolted to the floor and is secured to the building structure
using either wall brackets or overhead brackets.
• When mounting the router in a telco-type rack or 4-post rack, be sure to use
all of the screws provided to secure the chassis to the rack posts.
• For theCisco XR 12416 router, the mounting rails on a 4-post rack must be
recessed no more than 1.5 inches for the front door to fully open and close
and to provide adequate room for cable routing.