Chapter 2 Preparing for Installation
Site Requirement Guidelines
2-12
Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03
To help maintain trouble-free operation, consider the following precautions when
planning your rack installation:
• The site of the rack must include provisions for source AC or DC power,
grounding, and network interface cables.
• For the actual installation, allow sufficient space to work around the rack. You
will need at least 3 feet adjacent to the rack to move, align, and insert the
chassis. You will need at least 2 feet in front of the chassis to insert power
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
17.5 inches (44.5 cm).
• For the enhanced model of the Cisco 12006 and Cisco 12406 Routers, 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.
• The height of the Cisco 12006 and Cisco 12406 Router is 18.5 inches
(46.9 cm). Most 7-foot (2.15-m) equipment racks will accommodate four
Cisco 12006 and Cisco 12406 Routers. Allow sufficient space in the rack for
the router.
• When fully populated with cards, Cisco 12006 and Cisco 12406 Routers can
weigh as much as 205 pounds (93 kg). If you use a telco-style rack, the
weight of the chassis is cantilevered off of the two rack posts. Ensure that the
weight of the router does not make the frame unstable. Be sure that the frame
is bolted to the floor and is secured to the building structure, either to wall or
to overhead brackets.
• Do not route cables in such a way as to disrupt movement in front of or behind
the rack. To avoid noise interference in network interface cables, do not route
them directly across or along power cables. Use appropriate strain-relief
methods to protect cables and equipment connections.
• Install and use the cable-management brackets included with the router to
keep cables organized and out of the way of line cards, power modules, and
blower modules. Consider the equipment and cabling that is already installed