Cisco Systems XR 12406 manual Preparing for Installation Installation Site Requirements

Chapter 2 Preparing for Installation

Installation Site Requirements

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 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 XR 12406 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.

•The height of the Cisco XR 12406 Router is 18.5 inches (46.9 cm). Most

7-foot (2.15-m) equipment racks will accommodate four Cisco XR 12406 Routers. Allow sufficient space in the rack for the router.

•When fully populated with cards, a Cisco XR 12406 Router 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 in the rack. Ensure that cables from other equipment do not impair access to the card cages, requiring you to disconnect cables unnecessarily to perform equipment maintenance or upgrades.

	Cisco XR 12406 Router Installation Guide
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