Cisco Systems manual Shows the outer dimensions of the Cisco 12008 enclosure

Site Requirements Guidelines

•If you mount the router in a telco-style rack, ensure that the rack is bolted to the floor. Ensure that the weight of the router does not make the rack unstable. Some telco-style racks are also secured to ceiling brackets, if necessary, due to the weight of equipment in the rack. Make sure that the rack you are using to install the router is secured to the building structure.

•In mounting the router between two posts or rails, you must ensure that the clearance between the sides of the posts or rails is at least 17.5 inches (44.9 cm).

•Maintain a clearance of at least 6 inches (15.2 cm) at the front and back of the router to ensure adequate air intake and exhaust.

•Avoid installing the router in an overly congested rack. Air flowing to or from other equipment in the rack might interfere with the normal flow of cooling air through the router, increasing the potential for overtemperature conditions within the router.

•Allow at least 19 inches (48.7 cm) of clearance at the front of the rack for router maintenance.

•Install and use the cable-management system included with your router. The cable-

management system helps to keep interface cables organized, out of the way, and free from kinks or bends that degrade cable performance.

•Consider the equipment and cabling that may already be installed in the rack. Ensure that interface cables from other equipment do not impair access to the router’s upper card cage or lower card cage or require you to disconnect cables unnecessarily to perform equipment maintenance or upgrades.

•When mounting the router in a 4-post or telco-style rack, use the mounting hardware, as instructed, to properly secure the router in the rack.

Figure 2-1 shows the outer dimensions of the Cisco 12008 enclosure.

2-8Cisco 12008 Gigabit Switch Router Installation and Configuration Guide