Verifying Rack Dimensions
Before you install the chassis, measure the space between the vertical mounting flanges (rails) on your
equipment rack to verify that the rack conforms to the measurements shown in Figure 110: Verifying Equipment
Rack Dimensions, on page 103.
Procedure
Step 1 Mark and measure the distance between two holes on the left and right mounting rails.
The distance should measure 18.31 inches ± 0.06 inches (46.5 cm ± 0.15 cm).
Measure for pairs of holes near the bottom, middle and top of the equipment rack to ensure that the
rack posts are parallel.
Note
Step 2 Measure the space between the inner edges of the left front and right front mounting flanges on the equipment
rack.
The space must be at least 17.7 inches (45 cm) to accommodate the chassis, which is approximately 17.50
inches (44.45 cm) wide and fits between the mounting posts on the rack.
Figure 110: Verifying Equipment Rack Dimensions
Vertical Rack Rail Locations for ASR 9906 Router
This image shows the vertical rack rail locations for installing the Cisco ASR 9906 router chassis in a 2-post
and 4-post rack:
Cisco ASR 9000 Series Aggregation Services Router Hardware Installation Guide
103
Unpacking and Installing the Chassis
Verifying Rack Dimensions
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