Cisco ASR-920-10SZ-PD Manuale di istruzioni

Installing the Cisco ASR-920-10SZ-PD Router

This chapter describes how to install the Cisco ASR-920-10SZ-PD Router and includes the following sections:

•Prerequisites, page 1

•Installing the Router in a Rack, page 1

•Connecting the Chassis Ground and Power, page 5

•Power Connection Guidelines, page 8

•Assembling and Connecting the DC Power Cable to the Router, page 10

•Installing and Removing SFP Modules, page 12

•Connecting to the 10/100/1000 Ports, page 16

•Connecting a Cisco ASR-920-10SZ-PD Router to the Network, page 18

Prerequisites

Before installing the Cisco ASR-920-10SZ-PD 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 Cisco ASR-920-10SZ-PD Router. See Unpacking and Verifying the

Shipped Contents section.

•Gathering the tools and test equipment required to properly install the Cisco ASR-920-10SZ-PD Router.

See Tools and Equipment section.

For more instructions on how to prepare for the installation of the Cisco ASR-920-10SZ-PD Router, see

Preparing for Installation.

Installing the Router in a Rack

The following sections describe how to install the Cisco ASR-920-10SZ-PD Router in a rack. The procedures

in this section apply to both horizontal and vertical mounting of the router in a rack:

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Chassis Brackets

The chassis is shipped with mounting brackets that can be installed on the front of the chassis. To install the

brackets on the front of the chassis, perform these steps:

SUMMARY STEPS

1. Remove the rack-mount brackets from the accessory kit and position them beside the router chassis.

2. Position one of the brackets against the chassis side, and align the screw holes.

3. Secure the bracket to the chassis with the M5 screws removed when performing Step 1. The recommended

maximum torque is 10 in.-lb.

4. Repeat Step 2 and Step 3 for the other bracket.

DETAILED STEPS

Step 1 Remove the rack-mount brackets from the accessory kit and position them beside the router chassis.

Figure below shows how to attach the brackets at the front position on the Cisco ASR-920-10SZ-PD Router for a 19-inch

EIA rack.

Figure 1: Attaching Mounting Brackets for a 19-inch EIA 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 M5 screws removed when performing Step 1. The recommended maximum

torque is 10 in.-lb.

Step 4 Repeat Step 2 and Step 3 for the other bracket.

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Installing the Chassis Brackets

Installing the Router Chassis in the Rack

Ensure adequate clearance and air flow when mounting the router in a rack. For more information, see

the Clearance Guidelines section .

Note

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

Note

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

SUMMARY STEPS

1. Insert the rear of the chassis between the mounting posts.

2. Align the mounting holes in the bracket (and optional cable guide) with the mounting holes in the equipment

rack.

3. Install the eight 12-24 x 3/4-inch or 10-32 x 3/4-inch zinc-plated steel screws through the holes in the

bracket and into the threaded holes in the equipment rack posts.

4. Use a tape measure and level to verify that the chassis is installed straight and level.

DETAILED STEPS

Step 1 Insert the rear 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-920-10SZ-PD Router in a 19-inch EIA rack.

Figure 2: Installing the Chassis in a 19-inch EIA Rack

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Installing the Router Chassis in the Rack

Step 3 Install the eight 12-24 x 3/4-inch or 10-32 x 3/4-inch 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-920-10SZ-PD Router supports the following cable guides:

•A920-CBL-GUIDE-PC (left and right)—help in routing the cables from all components on the front

panel thereby enabling a proper cable-bending radius.

Assemble the cable guides before installing the chassis on the rack.Note

To install the cable guides, perform these steps:

SUMMARY STEPS

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 below.

2. Secure the cable guides with the four M4x6mm screws supplied with the cable guide kit. The recommended

maximum torque is 10 in-lb (1.12 N-m)

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Attaching the Cable Guides

DETAILED 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 below.

Figure 3: Cable Guide Installation For 19-inch Rack Brackets

Step 2 Secure the cable guides with the four M4x6mm screws supplied with the cable guide kit. The recommended maximum

torque is 10 in-lb (1.12 N-m)

Connecting the Chassis Ground and Power

Before you connect power or turn on power to the Cisco ASR-920-10SZ-PD Router, you must provide an

adequate chassis ground (earth) connection to your router.

Grounding the Router

The Cisco ASR-920-10SZ-PD Router provides a grounding point on either side of the unit for a two-hole lug.

Before making connections to the Cisco ASR-920-10SZ-PD Router, ensure that you disconnect the power

at the circuit breaker. Otherwise it may result in severe injury to yourself, or damage to the router.

Caution

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Connecting the Chassis Ground and Power

This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the

absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority

or an electrician if you are uncertain that suitable grounding is available. Statement 1024

Warning

Use copper conductors only. Statement 1025Warning

When installing the unit, the ground connection must always be made first and disconnected last. Statement

Warning

The following figure shows one of the grounding points of the Cisco ASR-920-10SZ-PD Router, for ease of

installation. The other grounding point is on the front panel (see Figure ), which can also be used for grounding

the router.

Figure 4: Grounding Point on the Router

Grounding point1

Perform the steps given below to ground the Cisco ASR-920-10SZ-PD Router using a two-hole lug and the

corresponding mounting point. Most routers require a 6-AWG ground connection. Verify your router

requirements for the ground connection.

Materials Required

To ensure the chassis ground connection that you provide is adequate, you need the following parts and tools:

•Ratcheting torque screwdriver with Phillips head that exerts up to 15 pound-force inches (lbf-in) of

pressure for attaching the ground wire to the router.

•Crimping tool as specified by the ground lug manufacturer.

•6-AWG or larger copper wire for the grounding wire

•Appropriate wire-stripping tools

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Grounding the Router

SUMMARY STEPS

1. Remove the two-hole lug from the router.

2. Set the parts aside.

3. If your ground wire is insulated, use a wire-stripping tool to strip the ground wire to 0.5 inch ± 0.02 inch

(12.7 mm ±0.5 mm) for the ring terminal (see the following figure)

4. Slide the open end of your 2-hole ground lug over the exposed area of the ground wire.

5. Using a crimping tool (as specified by the ground lug manufacturer), crimp the ground lug to the ground

wire as shown in figure below.

6. Use a Phillips head screwdriver to attach the 2-hole ground lug and wire assembly to the router with the

2 pan-head Phillips head screws.

7. Connect the other end of the ground wire to a suitable grounding point at your site.

DETAILED STEPS

Step 1 Remove the two-hole lug from the router.

Step 2 Set the parts aside.

Step 3 If your ground wire is insulated, use a wire-stripping tool to strip the ground wire to 0.5 inch ± 0.02 inch (12.7 mm ±0.5

mm) for the ring terminal (see the following figure)

Figure 5: Stripping a Ground Wire

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Grounding the Router

Step 4 Slide the open end of your 2-hole ground lug over the exposed area of the ground wire.

Step 5 Using a crimping tool (as specified by the ground lug manufacturer), crimp the ground lug to the ground wire as shown

in figure below.

Figure 6: Crimping a Ground Lug on to the Ground Wire

Step 6 Use a Phillips head screwdriver to attach the 2-hole ground lug and wire assembly to the router with the 2 pan-head

Phillips head screws.

Step 7 Connect the other end of the ground wire to a suitable grounding point at your site.

Power Connection Guidelines

This section provides guidelines for connecting the Cisco ASR 920 Series Aggregation Services Router power

supplies to the site power source.

Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground

conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain

that suitable grounding is available. Statement 213.

Warning

The plug-socket combination must be accessible at all times because it serves as the main disconnecting

device. Statement 1019.

Warning

This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation.

Install only in accordance with national and local wiring regulations. Statement 1045.

Warning

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Power Connection Guidelines

Guidelines for DC-Powered Systems

Basic guidelines for DC-powered systems include the following:

•Each chassis power supply should have its own dedicated input power source. The source must comply

with the safety extra-low voltage (SELV) requirements in the UL 60950, CSA 60950, EN 60950, and

IEC 60950 standards.

•The circuit must be protected by a dedicated two-pole circuit breaker. The circuit breaker should be

sized according to the power supply input rating and local or national code requirements.

•The circuit breaker is considered the disconnect device and should be easily accessible.

•The system ground is the power supply and chassis ground.

•Do not connect the DC return wire to the system frame or to the system-grounding equipment.

•Use the grounding lug to attach a wrist strap for ESD protection during servicing.

Preventing Power Loss

Use the following guidelines to prevent power loss to the router:

•To prevent loss of input power, ensure that the total maximum load on each circuit supplying the power

supplies is within the current ratings of the wiring and breakers.

•In some systems, you can use an UPS to protect against power failures at your site. Avoid UPS types

that use ferroresonant technology. These UPS types can become unstable with systems such as the Cisco

ASR-920-10SZ-PD Router, which can have substantial current-draw fluctuations due to bursty data

traffic patterns.

Use the information in the Table 1 to estimate the power requirements and heat dissipation of a Cisco

ASR-920-10SZ-PD Router based on a given configuration of the router. Determining power requirements is

useful for planning the power distribution system needed to support the router.

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Guidelines for DC-Powered Systems

Assembling and Connecting the DC Power Cable to the Router

Materials Required

•Three-meter long over-molded power cable marked with positive, negative, and grounding.

Figure 7: Four-pin Power Connector

Coupling nut5DC plug1

Contact socket6Cable2

Insulator7Wrap label3

Contacts8, 9, 10, 11Overmold4

When installing DC power supply, use 14 AWG, 90°C wires. Always ensure that the building’s installation

for short-circuit (overcurrent) protection does not exceed 15A.

A circuit breaker of maximum 15 A should be used.Note

A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement

1022

Warning

Cisco ASR 920-10SZ-PD Aggregation Services Router Hardware Installation Guide

Installing the Cisco ASR-920-10SZ-PD Router

Assembling and Connecting the DC Power Cable to the Router

Indice

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