Cisco Systems CRS-1 manual Dimensions of the 8-Slot Line Card Chassis, Front and Rear Clearances

Chapter 4 Site Planning Considerations

Aisle Spacing and Maintenance Access Floor Plan

Figure 4-2 Typical Cisco CRS-1 8-Slot Line Card Chassis Floor Plan

Service access

area: in front

of chassis

Cisco CRS-1 8-slot

line card chassis

Service access

area: behind rear

of chassis

36in.

(91.4 cm)

40.4 in.	112.4 in.
(102.6 cm)	(285.4 cm)

36in.

(91.4 cm)

122051

Dimensions of the 8-Slot Line Card Chassis

The dimensions for the Cisco CRS-1 8-slot line card chassis are:

•Chassis depth (including closed (optional) front and rear doors and an installed cable management bracket): ~35 to 40 in. (88.9 to 101.6 cm)

•Chassis height: 38.5 in. (97.8 cm)

•Chassis width: 17.5 in. (44.5 cm).

Note Because there is no external switch-fabric interconnection cabling on a single line card chassis system, the rear door is optional.

Front and Rear Clearances

The site requires the following front and rear clearances for chassis installation and maintenance access:

•To install the chassis in the equipment rack: 40.4 inches (102.6 cm)

•To service components and allow system airflow (both in front of and behind the chassis): 36 inches (91.4 cm)

Note Maintain at least 6 inches (15.2 cm) of clearance at both the inlet and exhaust openings on the chassis and on the power modules to allow sufficient airflow.

Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide

OL-5802-06 4-5