Juniper Networks M10i manual Typical Open-Frame Rack

Chapter 5: Preparing for Router Installation

NOTE: We recommend that you do not install the router in a cabinet. If you mount the router in a cabinet, be sure that sufficient room is provided for cable management and cables.

The rack rails must be spaced widely enough to accommodate the router chassis's external dimensions: 8.7 in. (22.1 cm) high, 18 in. (45.7 cm) deep, and 17.5 in. (44.5 cm) wide. The outer edges of the mounting brackets extend the width to 19 in. (48.3 cm). The spacing of rails and adjacent racks must also allow for the clearances around the router and rack that are specified in “Clearance Requirements for Airflow and Hardware Maintenance” on page 44.

The chassis height of 8.7 in. (22.1 cm) is approximately 5 U. A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the Electronics Industry Association. You can stack eight router in a rack that has at least 40 U (70 in. or 1.78 m) of usable vertical space.

The rack must be strong enough to support the weight of the fully configured router, up to approximately 79 lb (35.8 kg). If you stack eight fully configured routers in one rack, it must be capable of supporting about 632 lb (286.7 kg).

Figure 15: Typical Open-Frame Rack

Rack Requirements ■ 43