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CiscoASR 9000 Series Aggregation Services Router Hardware Installation Guide
Chapter2 Unpacking and Installing the Chassis
Rack-Mounting the Router Chassis
Rack-Mounting the Router Chassis
The router chassis is installed in a front-mounted position, as shown in Figure1-18 for the Cisco ASR
9010 Router, Figure1-19 for the Cisco ASR 9006 Router, Figure 1-20 for the Cisco ASR 9904 Router,
Figure 1-26 for the CiscoASR 9922 Router, and Figure 1-27 for the Cisco ASR 9912 Router.
In a front-mounted position, the chassis rack-mounting flanges are secured directly to the rack posts.
Note The Cisco ASR 9922 Router and CiscoASR 9912 Router are designed to mount in only 4-post racks.

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 Figure2-37.
Step1 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 (46.5cm ± 0.15 cm).
Note Measure for pairs of holes near the bottom, middle and top of the equipment rack to ensure that
the rack posts are parallel.
Step2 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.
Figure2-37 Verifying Equipment Rack Dimensions
Minimum usable
aperture 17.7 inches
(45.0 cm)
Hole centerline
to hole centerline
18.31 inches ± 0.06 inches
(46.5 cm ± 0.15 cm)
Mounting flanges
247170