Cisco Systems 7500 Series manual Cisco 7507 and Cisco 7507-MX Rack-Mount Considerations

Chapter 2 Preparing for Installation

Equipment Rack-Mounting Guidelines

•If you plan to use an equipment shelf, ensure that the shelf is constructed to support the weight and dimensions of the chassis. Figure 2-10shows the chassis footprint, which you will need if you are designing a customized shelf.

•If you use 2-post racks, be sure that the rack is bolted to the floor and secured. One end of the chassis mounts to the two rack posts with the chassis ears, and the rest of the chassis is cantilevered off the posts. Ensure that the weight of the chassis does not make the rack unstable. Some 2-post racks are also secured to ceiling brackets if warranted by the weight of the equipment in the rack.

In addition to the preceding guidelines, we recommend you review the precautions for avoiding overtemperature conditions in the “General Equipment Rack Ventilation Considerations” section on page 2-15.

Cisco 7507 and Cisco 7507-MX Rack-Mount Considerations

An optional rack-mounting kit is available for mounting the Cisco 7507 or Cisco 7507-MX in a standard 19-inch (48.26 cm) equipment rack. The mounting kit is not suitable for use with 2-post equipment racks, or those with obstructions (such as a power strip) that could impair access to the interface processors and power supplies. In telco environments or at installation sites that use nonstandard racks, the router can be mounted on an equipment shelf, provided that the rack dimensions allow safe installation and access to the power supplies and interface processors. Figure 2-11shows the chassis footprint and outer dimensions.

To use the optional rack-mount kit, your equipment rack must meet the following requirements:

•The width of the rack, between the two front mounting strips or rails, must be 17.75 inches (45.09 cm).

•The depth of the rack, between the front and rear mounting strips, must be at least 19.25 inches (48.90 cm) but not more than 32 inches (81.28 cm).

•The height of the chassis is approximately 20 inches (50.08 cm) (19.25 inches [48.90 cm] when the chassis feet are removed). The rack must have sufficient vertical clearance to insert the chassis and, if required after installation, to remove the chassis feet.

•If the rack has a vertical power strip or other potential obstacle, ensure that it will allow sufficient clearance to install and remove both interface processors (11 inches [27.94 cm] deep) and power supplies (16 inches [40.64 cm] deep), both of which must be pulled straight out of the chassis.

	Cisco 7500 Series Installation and Configuration Guide
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