Cisco 10720 Configuration Guide - Page 41

Chapter 2 Preparing for Installation Required Tools and Equipment Required Tools and Equipment The following tools and equipment are required to install the Cisco 10720 Internet Router: • ESD-preventive wrist strap • Number 1 Phillips screwdriver • 1/8-inch flat-blade screwdriver • Antistatic mat (optional) • Antistatic bag • Cable ties • Wire stripper Rack-Mounting Guidelines Before installing the Cisco 10720 Internet Router in a 19-inch EIA, 23- or 24-inch EIA, or ETSI equipment rack, consider the general rack-mounting guidelines presented in the following sections: • Ventilation Guidelines, page 2-5 • Rack-Mounting Clearance Guidelines, page 2-6 • Maintenance Guidelines for Multiple Routers in a Rack, page 2-6 Ventilation Guidelines Caution The fan assembly is located in the back of the router chassis. Air flow in the front and back of the router should not be blocked. Use these guidelines to provide adequate ventilation for the Cisco 10720 Internet Router: • Install the chassis in an enclosed rack only if the rack has adequate ventilation or an exhaust fan; use an open rack when possible. • A ventilation system that is too powerful in an enclosed rack can also prevent cooling by creating negative air pressure around the router and redirecting the air away from the air intake vent. If necessary, operate the router with the rack door open or in an open rack. • Make sure that the air baffle located between the fan assembly and power supply is properly seated to assist in cooling the router. • Check equipment located near the bottom of the rack, because it can generate excessive heat that is drawn upward and into the intake ports of equipment above, possibly leading to overheating. 78-13062-10 Cisco 10720 Internet Router Installation and Configuration Guide 2-5