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Cisco ASR 9001 and Cisco ASR 9001-S Routers Hardware Installation Guide
OL-26701-02
Chapter 1 Preparing for Installation
Site Requirement Guidelines
Figure 1-6 Equipment Rack Types
Telco 2-Post Rack
Item a in Figure 1-6 shows a telco-style rack. The telco-style rack is an open frame consisting of two
posts tied together by a cross-bar at the top and a floor-stand at the bottom.
This type of rack is usually secured to the floor, and sometimes to an overhead structure or wall for
additional stability. The router chassis can be installed in the telco-style rack only in a front-mounted
position.
In the front-mounted position, you secure the chassis rack-mounting brackets directly to the rack posts
(see Figure 1-7 as an example of a Cisco ASR 9001 Router rack mounting). Two rear mounting brackets
are provided for mounting the Cisco ASR 9001 Router in a 2-post rack.
Note The mounting brackets on the Cisco ASR 9001 Router chassis have a pair of holes at the top and bottom
of each bracket; the remaining openings in the brackets are slots. If the Cisco ASR 9001 Router is to be
mounted in a 2-post 19-inch rack, you must first use the holes to locate and position the brackets on the
rack. Insert screws through the bracket holes into the rack before inserting screws through the bracket
slots.
a Telco-style rack b Free-standing, 4-post open
rack with two mounting
posts in the front, two
mounting posts in the back
or along each side
c Free-standing enclosed rack
with perforated sides and
two mounting posts in the
front
243453
a b c