Cisco ASR 920 series Manual de instrucciones
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Installing the Cisco ASR 920 Series Router
This chapter describes how to install the Cisco ASR 920 Series Router and includes the following
sections:
•“Prerequisites” section on page 3-1
•“Installing the Router in a Rack” section on page 3-1
•“Installing the Chassis Ground Connection” section on page 3-21
•“Connecting a Cisco ASR 920 Series Router to the Network” section on page 3-25
Prerequisites
Before installing the Cisco ASR 920 Series Router, it is important to prepare for the installation by:
•Preparing the site (site planning) and reviewing the installation plans or method of procedures
(MOP). See “Site Planning” section on page 2-9.
•Unpacking and inspecting the Cisco ASR 920 Series Router. See “Receiving the
Cisco ASR 920 Series Router” section on page 2-20.
•Gathering the tools and test equipment required to properly install the
Cisco ASR 920 Series Router. See “Tools and Equipment” section on page 2-21.
For more instructions on how to prepare for the installation of the Cisco ASR 920 Series Router, see
Chapter 2, “Preparing for Installation.”
Installing the Router in a Rack
The following sections describe how to install the Cisco ASR 920 Series Router in a rack. The
procedures in this section apply to both horizontal and vertical mounting of the router in a rack:
•“Installing the Chassis Brackets” section on page 3-2
•“Installing the Router Chassis in the Rack” section on page 3-6
•“Attaching the Cable Guides” section on page 3-7
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Chapter 3 Installing the Cisco ASR 920 Series Router
Installing the Router in a Rack
Installing the Chassis Brackets
The chassis is shipped with mounting brackets that can be installed on the front or rear of the chassis.
To install the brackets on the front of the chassis, perform these steps:
Step 1 Remove the rack-mount brackets from the accessory kit and position them beside the router chassis.
Figure 3-1 shows how to attach the brackets at the front, middle, and rear positions on the
Cisco ASR 920 Series Router for a 19-inch EIA rack.
Figure 3-1 Attaching Mounting Brackets for a 19-inch EIA Rack (Front, Middle, and Rear Positions)
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Figure 3-2 shows how to attach the brackets on the Cisco ASR 920 Series Router for a 23-inch cabinet.
Figure 3-2 Attaching Mounting Brackets for a 23-inch Cabinet (Front, Middle, and Rear Positions)
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Chapter 3 Installing the Cisco ASR 920 Series Router
Installing the Router in a Rack
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Chapter 3 Installing the Cisco ASR 920 Series Router Installing the Router in a Rack
Figure 3-3 Attaching Mounting Brackets for a 300 mm ETSI Cabinet (Front, Middle, and Rear Positions)
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Chapter 3 Installing the Cisco ASR 920 Series Router
Installing the Router in a Rack
Step 2 Position one of the brackets against the chassis side, and align the screw holes.
Step 3 Secure the bracket to the chassis with the screws removed when performing Step 1. The recommended
maximum torque is 10 in.-lb.
Step 4 Repeat Step 2and Step 3for the other bracket.
Installing the Router Chassis in the Rack
Note Ensure adequate air flow when mounting the router in a rack. For more information, see the “Air Flow
Guidelines” section on page 11.
Note Install the cable guides before installing the router in a 19-inch EIA rack. See Attaching the Cable
Guides, page 3-7.
To install the router chassis in the equipment rack, perform these steps:
Step 1 Position the chassis in the rack as follows:
•If the front of the chassis (front panel) is at the front of the rack, insert the rear of the chassis between
the mounting posts.
•If the rear of the chassis is at the front of the rack, insert the front of the chassis between the
mounting posts.
Step 2 Align the mounting holes in the bracket (and optional cable guide) with the mounting holes in the
equipment rack.
The following figure shows how to install the Cisco ASR 920 Series Router in a 19-inch EIA rack.
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Chapter 3 Installing the Cisco ASR 920 Series Router Installing the Router in a Rack
Figure 3-4 Installing the Chassis in a 19-inch EIA Rack
Step 3 Install the four M6x12mm zinc-plated steel screws through the holes in the bracket and into the threaded
holes in the equipment rack posts.
Step 4 Use a tape measure and level to verify that the chassis is installed straight and level.
Attaching the Cable Guides
The Cisco ASR 920 Series Router supports the following cable guides:
•A920-CBL-GUIDE (left and right)—help in routing the cables from all components on the front
panel thereby enabling a proper cable-bending radius.
Note If the chassis is mounted using 19-inch brackets, you must assemble the cable guides before installing
the chassis on the rack.
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Installing the Router in a Rack
To install the cable guides, perform these steps:
Step 1 Position the cable guide-left and cable guide-right against the front of the chassis and align the four
screw holes, as shown in Figure 3-5.
Figure 3-5 Cable Guide Installation For 19-inch Rack Brackets
Figure 3-6 Cable Guide Installation For ETSI Rack Brackets
Step 2 Secure the cable guides with the four M6x12mm screws supplied with the cable kit. The recommended
maximum torque is 3N-m.
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Chapter 3 Installing the Cisco ASR 920 Series Router Wall Mounting the Cisco ASR 920 Series Router
Figure 3-7 Installing the Cable Guides (As Per the Standard Kit)
Wall Mounting the Cisco ASR 920 Series Router
To install the Cisco ASR 920 Series Router on a wall, follow the instructions in these procedures:
•Attaching the Brackets to the Router for Wall-Mounting, page 3-9
•Mounting Cisco ASR 920 Series Router on the Wall, page 3-10
Attaching the Brackets to the Router for Wall-Mounting
Note While wall mounting the Cisco ASR 920 Series Router, always ensure that the power supplies are at the
top position.
Figure 3-8 shows how to attach a 19-inch bracket to one side of the router. Follow the same steps to
attach the second bracket to the opposite side.
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Wall Mounting the Cisco ASR 920 Series Router
Figure 3-8 Attaching 19-inch Brackets for Wall Mounting
Mounting Cisco ASR 920 Series Router on the Wall
For the best support of the Cisco ASR 920 Series Router and cables, ensure the router is attached
securely to wall studs or to a firmly attached plywood mounting backboard.
Warning
Suitable for mounting on and over a concrete or other non-combustible surface only.
Statement 345
Caution Before mounting the router, ensure that all unused holes at the sides of the router are always protected
by screws.
Figure 3-9 Installing Screws in Unused Holes Before Wall Mounting the Router
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