Cisco ASR 920 series Manuale di istruzioni

Installing the Cisco ASR 920 Series Router

This chapter describes how to install the router and includes the following sections:

•Prerequisites, on page 1

•Installing the Router in a Rack, on page 2

•Mounting the Router in a Rack, on page 7

•Installing the Router Chassis in the Rack, on page 7

•Attaching the Cable Guides, on page 8

•Wall Mounting the Router, on page 10

•Installing and Removing SFP Modules, on page 13

•Connecting to the Copper Ports, on page 15

•Installing the Chassis Ground Connection, on page 17

•Installing and Removing the Fan Tray, on page 19

•Interface Module Installation, on page 21

•Installing Patch Panel, on page 22

•Install 3G Patch Panel, on page 26

•Patch Panel Dimensions, on page 48

•Patch Panel Pinout, on page 53

•Panel and Bracket, on page 54

•Installing the Power Supply, on page 54

•Connecting the Router to the Network, on page 64

Prerequisites

Before installing the 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.

• Unpacking and inspecting the router. See Chassis-Lifting Guidelines section.

• Gathering the tools and test equipment required to properly install the router. See Tools and Equipment

section.

For more instructions on how to prepare for the installation of the router, see Preparing for Installation section.

Installing the Cisco ASR 920 Series Router

Installing the Router in a Rack

Each Cisco ASR 920 Series Aggregation Services Router router includes rack-mounting brackets. Using the

rack-mounting brackets, you can mount the router in a 19-inch, 23-inch, or an ETSI rack that conforms to the

EIA-310-D specification.

Using the two rack-mounting brackets for mounting, you can recess the router in the equipment rack. This

arrangement provides extra space in front of the router for the cables and allows you to close the doors of

racks equipped with front-close doors.

To attach or replace the rack-mounting brackets, see the Attaching Brackets to the Router section.

The rack-mounting brackets are slotted to allow the router to be mounted in racks with EIA 1.25-inch (3.175-cm)

or WECO 1.0-inch (2.54-cm) hole spacing. When installed in the rack, the router requires one EIA 1.75-inch

(4.4-cm) vertical mounting space (or 1 rack unit [RU]) for mounting (see the Mounting the Router in a Rack

section).

Allow clearance on either side of the router for cooling air to be drawn in through the right side and circulated

through the chassis and out the three-fan exhaust ports mounted on the other side of chassis.

Caution

The sections describe how to install the router in a rack. The procedures in this section apply to both horizontal

and vertical mounting of the router in a rack:

Attaching Brackets to the Router

The bracket orientation and the brackets that you use depend on whether you are attaching the brackets for a

19-inch, 23-inch, or an ETSI rack. The following figure shows the types of mounting brackets.

Installing the Cisco ASR 920 Series Router

Installing the Router in a Rack

Figure 1: Rack-Mounting Brackets

23-inch brackets219-inch brackets1

——ETSI-rack brackets3

• For 19-inch racks, use part number 700-39959-01 (see Attaching Brackets for 19-Inch Racks section).

• For 23-inch racks, use part number 700-40065-01 (see Attaching Brackets for 23-Inch Racks section).

• For ETSI racks, use part number 700-40067-01 (see Attaching Brackets for ETSI Racks section).

The bracket mounting screws are pre-installed on the router. Depending on the bracket mounting position of

the chassis, you must remove the appropriate screws, fix the bracket, and install the screws again.

Note

Attaching Brackets for 19-Inch Racks

The following figure shows how to attach brackets for 19-inch racks on the router.

Installing the Cisco ASR 920 Series Router

Attaching Brackets for 19-Inch Racks

Figure 2: Attaching Brackets for 19-Inch Racks

Front-mounting position2Phillips flat-head screws1

Rear-mounting position4Mid-mounting position3

Installing the Cisco ASR 920 Series Router

Attaching Brackets for 19-Inch Racks

Attaching Brackets for 23-Inch Racks

The following figure shows how to attach brackets for 23-inch racks on the router.

Figure 3: Attaching Brackets for 23-Inch Racks

Front-mounting position2Phillips flat-head screws1

Installing the Cisco ASR 920 Series Router

Attaching Brackets for 23-Inch Racks

Rear-mounting position4Mid-mounting position3

Attaching Brackets for ETSI Racks

The following figure shows how to attach brackets for ETSI racks on the router.

Figure 4: Attaching Brackets for ETSI Racks

Installing the Cisco ASR 920 Series Router

Attaching Brackets for ETSI Racks

Front-mounting position2Phillips flat-head screws1

Rear-mounting position4Mid-mounting position3

Mounting the Router in a Rack

Perform the steps given below to mount the router into the equipment rack.

To secure the router to the equipment rack, you must use the two mounting screws (provided) for each side

or follow your local practices for installing the router into your equipment rack. Ensure that the rack-mount

brackets are securely fastened. For more information, see the Attaching Brackets to the Router section.

Note

Procedure

Step 1 Locate the equipment rack position where you plan to install the router.

Step 2 Verify that there are no obstructions and ensure that the equipment rack is stabilized.

Step 3 Determine whether you are mounting the router on a 19-inch, 23-inch, or an ETSI rack. Rack-Mounting

Brackets figure shows the types of mounting brackets.

Step 4 Determine the mounting position (Front-, Mid-, or Rear-mounting) of the router. (For 19-inch racks, see

Attaching Brackets for 19-Inch Racks section. For 23-inch racks, see Attaching Brackets for 23-Inch Racks

section. For ETSI racks, see Attaching Brackets for ETSI Racks section.)

Step 5 Locate the mounting holes of the router.

Step 6 Align the rack-mounting bracket with the router and position with the four #6-32 x 0.25-inch screws (provided).

Step 7 Insert the screws (four places) and tighten using a Number 2 Phillips screwdriver (each side).

Step 8 Position the router in the equipment rack lining up the bracket holes on the router with the holes on the rack

and secure with four #6-32 x 0.25-inch mounting screws (two on each side).

Step 9 Tighten the screws using a 1/4-inch flat-blade screwdriver (each side). The recommended maximum torque

is 10 in.-lb.

Installing the Router Chassis in the Rack

Ensure adequate air flow when mounting the router in a rack. For more information, see the Air Flow Guidelines

section in the Cisco ASR-920-12SZ-IM and ASR-920U-12SZ-IM Aggregation Services Router Hardware

Installation Guide.

Note

Installing the Cisco ASR 920 Series Router

Mounting the Router in a Rack

Install the cable guides before installing the router in a 19-inch EIA rack. See the Attaching the Cable Guides

section in the Cisco ASR-920-12SZ-IM and ASR-920U-12SZ-IM Aggregation Services Router Hardware

Installation Guide.

Note

To install the router chassis in the equipment rack, perform these steps:

Procedure

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 router in a 19-inch EIA rack.

Figure 5: 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:

Installing the Cisco ASR 920 Series Router

Attaching the 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.

If the chassis is mounted using 19-inch brackets, you must assemble the cable guides before installing the

chassis on the rack.

Note

To install the cable guides, perform these steps:

Procedure

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 the following figure.

Figure 6: Cable Guide Installation For 19-inch Rack Brackets

Figure 7: 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.

Installing the Cisco ASR 920 Series Router

Attaching the Cable Guides

Figure 8: Installing the Cable Guides (As Per the Standard Kit)

Wall Mounting the Router

To install the router on a wall, follow the instructions in these procedures:

Attaching the Brackets to the Router for Wall-Mounting

While wall mounting the router, always ensure that the power supplies are at the top position.

Note

The following figure 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.

Installing the Cisco ASR 920 Series Router

Wall Mounting the Router

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