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
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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
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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
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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
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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
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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
42
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
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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
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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
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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
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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
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Installing the Cisco ASR-920-10SZ-PD Router
Assembling and Connecting the DC Power Cable to the Router
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