Cisco ASR-920-20SZ-M Hardware Installation Manual

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Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide

First Published: 2018-09-10

Americas Headquarters

Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000

800 553-NETS (6387)

Fax: 408 527-0883

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CHAPTER 1

CHAPTER 2

Safety Warnings 1

Standard Warning Statements 1

Safety Guidelines for Personal Safety and Equipment Protection 2

Safety Precautions for Module Installation and Removal 3

Safety with Electricity 3

Power Supply Considerations 6

Power Connection Guidelines 6

Guidelines for DC-Powered Systems 7

Guidelines for AC-Powered Systems 7

Prevent Power Loss 7

Preventing ESD Damage 7

Overview 9

Features 9

GigabitEthernet Copper Ports 10

GE SFP Ports 11

SFP+ Ports 11

External Interfaces 11

Network Interfaces 11

Network Timing Interfaces 11

External Alarm Inputs 12

Console 12

Auxiliary Console 12

USB Console 12

USB Memory 12

Online Insertion and Removal 13

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Contents

Power Supply and Fans 13

Licensing 14

CHAPTER 3

Prepare for Installation 15

Site Planning 15

General Precautions 15

Site Planning Checklist 15

Site Selection Guidelines 16

Airflow for Site Planning 16

Environmental Requirements 16

Physical Characteristics 17

Airflow Guidelines 17

Floor Loading Considerations 18

Site Power Guidelines 18

Electrical Circuit Requirements 19

Site Cabling Guidelines 19

Asynchronous Terminal Connections 19

Interference Considerations 19

Rack-Mounting Guidelines 20

CHAPTER 4

Precautions for Rack-Mounting 20

Rack Selection Guidelines 20

Receive the Device 21

Unpack and Verify Shipped Contents 23

Tools and Equipment 24

Install the Router 25

Rack Compatibility 25

Rack Types 25

Set up Device on Rack or Wall 27

Rack Mount 27

Install Rack Brackets 27

Set up Device on Rack 32

Attaching the Cable Guides 33

Wall Mount 34

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Install Wall Brackets 34

Wall Mount the Device 35

Ground the Device 36

Connect Power Cables 37

Activate an AC Power Supply 38

Attach Cables to the DC Power Supply 40

Power On the DC Power Supply 41

Connect Gigabit Ethernet Ports 41

Connect SFP Modules 42

Install SFP Modules 42

Remove SFP Modules 43

Connect Fiber Optic SFP Modules 43

Connect RJ-45 Connector 44

Contents

CHAPTER 5

Connect Chassis to Network 44

Connecting Console Cables 44

Connecting to the USB Serial Port Using Microsoft Windows 45

Connecting to the Console Port Using Mac OS X 46

Connecting to the Console Port Using Linux 46

Installing the Cisco USB Device Driver 47

Uninstalling the Cisco USB Device Driver 47

Connecting a USB Flash Device 48

Removing a USB Flash Device 48

Connecting Timing Cables 49

Connecting a Cable to the BITS Interface 49

Connecting Cables to the GPS Interface 49

Connect to EIA Console Port 50

Connect a Management Ethernet Cable 51

Configure the Device 53

Power up the Device 53

Verify the Front Panel LEDs 53

Verify the Hardware Configuration 54

Check Hardware and Software Compatibility 54

Configure Device at Startup 54

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Contents

Access the CLI Using the Console 55

Configure Global Parameters 55

Check the Running Configuration Settings 56

Save the Running Configuration to NVRAM 57

Safely Power Down the Device 57

CHAPTER 6

CHAPTER 7

Replace the Power Supply 59

Remove the DC Power Supply 59

Install the DC Power Supply 60

Remove the AC Power Supply 61

Install the AC Power Supply 62

Troubleshooting Aids 65

Verify Pinout 65

BITS Port Pinouts 65

GPS Port Pinouts 66

Time-of-Day Port Pinouts 66

Alarm Port Pinouts 67

Management Ethernet Port Pinouts 67

USB Console Port Pinouts 68

USB MEM Port Pinouts 68

Check Optical Fiber Specifications 69

Check Alarm Conditions 69

Check LED Indicators 69

PWR and STAT LEDs 70

CPU Management Port LEDs 70

SFP LEDs 71

SFP+ LEDs 71

RJ-45 LEDs 72

Power Supply Unit LEDs 72

System–Interface LED Behavior 72

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Safety Warnings

This handout topic lists the safety warnings necessary for handling this product. Before you install or service the chassis, review these safety warnings to avoid injuring yourself or damaging the equipment.

For a complete list of translated safety warnings, see the Regulatory Compliance and Safety Information for

the Cisco ASR 920 Series Aggregation Services Router document.

The safety warnings are grouped under the following sections:

• Standard Warning Statements, on page 1

• Safety Guidelines for Personal Safety and Equipment Protection, on page 2

• Safety Precautions for Module Installation and Removal, on page 3

• Safety with Electricity, on page 3

• Power Supply Considerations, on page 6

• Preventing ESD Damage, on page 7

Standard Warning Statements

CHAPTER 1

Warning

To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: This unit should be mounted at the bottom of the rack if it is the only unit in the rack. When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack. If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack. Statement 1006

This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017

Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040

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Safety Guidelines for Personal Safety and Equipment Protection

Safety Warnings

Warning

To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 158°F (70°C). Statement 1047

The chassis should be mounted on a rack that is permanently affixed to the building. Statement 1049

IMPORTANT SAFETY INSTRUCTIONS: This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071

This is a Class A Device and is registered for EMC requirements for industrial use. The seller or buyer should be aware of this. If this type was sold or purchased by mistake, it should be replaced with a residential-use type. Statement 294

This is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. Statement 340

Warning

This equipment is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC. Statement 287

Warning

Suitable for mounting on and over a concrete or other non-combustible surface only. Statement 345

SafetyGuidelines for Personal Safetyand Equipment Protection

The following guidelines ensure your safety and protect the equipment. This list does not include all the potentially hazardous situations. Therefore, you must be alert.

• Before moving the system, always disconnect all power cords and interface cables.

• Never assume that power is disconnected from a circuit; always check.

• Before and after installation, keep the chassis area clean and dust free.

• Keep tools and assembly components away from walk areas where you or others could trip over them.

• Do not work alone if potentially hazardous conditions exist.

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Safety Warnings

Safety Precautions for Module Installation and Removal

• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

• Do not wear loose clothing that may get caught in the chassis.

• When working under conditions that may be hazardous to your eyes, wear safety glasses.

Safety Precautions for Module Installation and Removal

Be sure to observe the following safety precautions when you work on the router.

Warning

Class 1 laser product. Statement 1008

Do not stare into the beam or view it directly with optical instruments. Statement 1011

Invisible laser radiation present. Statement 1016

Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051

Safety with Electricity

Warning

Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. Statement 12

Warning

Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. Statement 43

Avoid using or servicing any equipment that has outdoor connections during an electrical storm.

There may be a risk of electric shock from lightning. Statement 1088

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Safety with Electricity

Safety Warnings

Warning

Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003

Read the installation instructions before connecting the system to the power source. Statement 1004

This product relies on the building’s installation for short-circuit (overcurrent) protection. For a DC installation, ensure that the branch circuit breaker is rated a maximum 15A for DC systems. For AC systems, 15A for voltages greater than 200Vac; 20A for voltages below 127Vac. Statement 1005

Take care when connecting units to the supply circuit so that wiring is not overloaded. Statement 1018

The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device. Statement 1019

Warning

To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ45 connectors. Use caution when connecting cables. Statement 1021

A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022

To reduce the risk of fire, use only 26 AWG or larger telecommunication line cord. Statement 1023

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

Use copper conductors only. Statement 1025

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Safety Warnings

Safety with Electricity

Warning

This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028

To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles on modules (such as power supplies, fans, or cards); these types of handles are not designed to support the weight of the unit. Statement 1032

Connect the unit only to DC power source that complies with the safety extra-low voltage (SELV) requirements in IEC 60950 based safety standards. Statement 1033

When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046

Warning

Installation of the equipment must comply with local and national electrical codes. Statement 1074

Hazardous voltage or energy may be present on power terminals. Always replace cover when terminals are not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1086

When working on equipment that is powered by electricity, follow these guidelines:

• Locate the room’s emergency power-off switch. If an electrical accident occurs, you know where to quickly turn off the power.

• Before starting work on the system, turn off the DC main circuit breaker and disconnect the power terminal block cable.

• Disconnect all power when:

• Working on or near power supplies

• Installing or removing a device chassis or network processor module

• Performing most hardware upgrades

• Never install equipment that appears damaged.

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Power Supply Considerations

Use the following guidelines when working with any equipment that is disconnected from a power source, but connected to telephone wiring or network cabling:

Safety Warnings

• Carefully examine your work area for possible hazards, such as moist floors, ungrounded power extension cables, and missing safety grounds.

• Never assume that power is disconnected from a circuit; always check.

• Never perform any action that creates a potential hazard to people or makes the equipment unsafe.

• If an electrical accident occurs and you are uninjured:

• Use caution to avoid injuring yourself.

• Turn off power to the device.

• If possible, send another person to get medical aid. Otherwise, determine the condition of the victim, and then call for help.

• Determine whether the person needs rescue pulsing or external cardiac compressions; then take appropriate action.

• When installing or modifying telephone lines, use caution.

• Never install telephone jacks in wet locations unless the jack is designed to handle such locations.

• Never install telephone wiring during a lightning storm.

Power Supply Considerations

Check the power at your site to ensure that you are receiving clean power (free of spikes and noise). If necessary, install a power conditioner.

Power Connection Guidelines

This section provides guidelines for connecting the device power supplies to the site power source.

Warning

This equipment is intended to be grounded to comply with emission and immunity requirements. Ensure that the switch functional ground lug is connected to earth ground during normal use. Statement 1064

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

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Safety Warnings

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.

Guidelines for AC-Powered Systems

Basic guidelines for AC-powered systems include the following:

• Each chassis power supply should have its own dedicated branch circuit.

• The circuit breaker should be sized according to the power supply input rating and local or national code requirements.

• The AC power receptacles used to plug in the chassis must be the grounding type. The grounding conductors that connect to the receptacles should connect to protective earth ground at the service equipment.

Guidelines for DC-Powered Systems

Prevent 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 Series Router, which can have substantial current-draw fluctuations due to bursty data traffic patterns.

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

Preventing ESD Damage

Warning

This equipment needs to be grounded. Use a green and yellow 6 AWG ground wire to connect the host to earth ground during normal use. Statement 383

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD may occur when electronic printed circuit cards are improperly handled and can cause complete or intermittent failures. When removing and replacing modules, always follow ESD prevention procedures:

• Ensure that the router chassis is electrically connected to earth ground.

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Preventing ESD Damage

Safety Warnings

• Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. To channel unwanted ESD voltages safely to ground, connect the clip to an unpainted surface of the chassis frame. To guard against ESD damage and shocks, the wrist strap and cord must operate effectively.

• If no wrist strap is available, ground yourself by touching a metal part of the chassis.

• When installing a component, use any available ejector levers or captive installation screws to properly seat the bus connectors in the backplane or midplane. These devices prevent accidental removal, provide proper grounding for the system, and help to ensure that bus connectors are properly seated.

• When removing a component, use available ejector levers or captive installation screws, if any, to release the bus connectors from the backplane or midplane.

• Handle components by their handles or edges only; do not touch the printed circuit boards or connectors.

• Place a removed component board side up on an antistatic surface or in a static-shielding container. If you plan to return the component to the factory, immediately place it in a static-shielding container.

• Avoid contact between the printed circuit boards and clothing. The wrist strap only protects components from ESD voltages on the body; ESD voltages on clothing can still cause damage.

• Never attempt to remove the printed circuit board from the metal carrier.

Note

For the safety of your equipment, periodically check the resistance value of the antistatic wrist strap. It should be between 1 and 10 Mohm.

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Features

CHAPTER 2

Overview

The Cisco ASR-920-20SZ-M Router is a fixed configuration router that enables Service Providers to provide business, residential, and mobile access services to their users. It is the Carrier Ethernet access platform providing Ethernet services.

• Features, on page 9

• GigabitEthernet Copper Ports, on page 10

• GE SFP Ports, on page 11

• SFP+ Ports, on page 11

• External Interfaces, on page 11

• Power Supply and Fans, on page 13

• Licensing, on page 14

The Cisco ASR 920 Series Router family includes:

• Cisco ASR 920 [ASR-920-20SZ-M]—This sub-family with 1 RU form factor has fixed ENET interfaces (four 10GE and twenty-four 1GE) and redundant modular power supplies (AC/DC).

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GigabitEthernet Copper Ports

Figure 1: Cisco ASR-920-20SZ-M Top and Front Panel

Overview

The following table provides a snapshot of the number and type of supported ports:

Table 1: Supported Ports on Cisco ASR-920-20SZ-M Router

GigabitEthernet Copper Ports

Fixed copper GigabitEthernet (GE) interfaces are provided through standard RJ-45 connectors. These ports support the following features:

• Standard 10/100/1000Base-T/TX operation with forced or auto-negotiation for speed and duplex.

• Automatic crossover (auto-MDIX) for straight-through and crossover connections.

• Pause flow control as defined by the 802.3x standard.

• Frame size of 9216 bytes.

• Synchronous ENET operation that provides its recovered receive clock as an input clock source for the SETS as well as uses the system-wide reference clock to derive its transmit clock.

Type of 10 GE PortType of 1 GE Port10 GE Port1 GE PortASR 920 Sub-family

4 SFP+20 Fiber 4 Copper424ASR-920-20SZ-M

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Overview

GE SFP Ports

The GE SFP ports support the following features:

Note

Copper based SFPs do not support synchronous ENET operations.

GE SFP Ports

• 100Base-FX and 1000Base-X SFP modules.

• Copper SFP modules

• Digital optical monitoring as specified by the SFP.

• Any mix of SFPs is supported unless specifically noted.

• Pause flow control as defined by the 802.3x standard.

• Frame size of 9216 bytes.

• Synchronous ENET operation that provides its recovered receive clock as an input clock source for the SETS as well as uses the system-wide reference clock to derive its transmit clock.

SFP+ Ports

The SFP+ ports support the following features:

• Digital optical monitoring as specified by the optical transceiver module.

• Any mix of SFPs is supported unless specifically noted.

• Pause flow control as defined by the 802.3x standard.

• Frame size of 9216 bytes.

External Interfaces

The Cisco ASR 920-20SZ-M Router has these external physical interfaces on the front panel:

Network Interfaces

The network interfaces are provided through fixed ports.

• GE SFP ports—supports 100/1000 modes

• GE copper ports—supports 10/100/1000 operation

• 10GE SFP+—supports 10G mode

Network Timing Interfaces

• BITS input or output—The BITS interfaces support clock recovery from either a T1 at 1.544 MHz or an E1 at 2.048 MHz, configurable by software. BITS interface is provided through a standard RJ-48 connector on the front panel.

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External Alarm Inputs

• 1PPS input or output and ToD input or output—This shielded RJ-45 interface is used for input or output of time-of-day (ToD) and 1PPS pulses. ToD format includes both NTP and IEEE 1588-2008 time formats.

The same RS422 pins for 1PPS and TOD are shared between input and output directions. The direction for each can be independently configurable through software.

Use an SMB connector on the front panel for the following:

• GPS 10 Mhz input and output—10 MHz input for GPS Synchronization.

• GPS 1 PPS input and output—1 PPS input for GPS Synchronization.

External Alarm Inputs

The router supports four dry contact alarm inputs through an RJ-45 jack on the front panel.

• Normally Open—indicates that no current flows through the alarm circuit and the alarm is generated when the current is flowing.

Each alarm input can be provisioned as critical, major, or minor.

Overview

Console

The RS232 console port provides transmission (Tx), reception (Rx), and ground (Gnd).

Auxiliary Console

The Auxiliary Console port provides transmission (Tx), reception (Rx), and ground (Gnd).

USB Console

A single USB 2.0 Type-A receptacle on the front panel of the router provides console access to ROMMON, Cisco IOS-XR and diagnostics. While it uses the Type-A connector, it operates as a USB peripheral only for connection to an external host computer. This interface requires the use of a Type-A to Type-A connector instead of a standard USB cable.

Note

Use of the USB console is mutually exclusive of the RS232 console port. This interface requires the use of a Type-A to Type-A USB cable.

USB Memory

A single USB 2.0 Type-A receptacle on the front panel of the router allows external USB mass storage devices, such as standard USB flash drives. This interface is used to load images, load or store configurations, write logs, and so on.

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Overview

Note

More than 8 GB is not supported in ROMMON mode.

Online Insertion and Removal

The router supports the following OIR operations:

• When an SFP is removed, there is no effect on traffic flowing on other ports.

• When an SFP is installed, the system initializes that port for operation that is based on the current configuration. If the inserted SFP is incompatible with the current configuration for that port, the port does not become operational until the configuration is updated.

• Both power supplies are installed and active, the load may be shared between them or a single PSU could support the whole load. When a power supply is not working or the input cable is removed, the remaining power supply takes the entire load without disruption.

Online Insertion and Removal

Power Supply and Fans

The Cisco ASR-920-20SZ-M Router supports a 1+1 redundant configuration with the combination of an AC and a DC, or two AC, or two DC power supplies. One AC and one DC power supply in the same router is also a supported configuration. The PSUs are hot-swappable. Load is shared between PSUs when both the PSUs are inserted and powered-up. Status LED provided on both AC and DC PSU indicates the status and output condition.

Note

DC PSU can be switched on or off using a switch on the front panel of the DC PSU.

Note

This product requires surge protection as part of the building installation. To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, an external surge protective device (SPD) is required at the AC power service equipment.

Note

For DC systems, if a surge of more than 1KV is expected, add an appropriate external surge protective device.

The Cisco ASR-920-20SZ-M Router has six fixed fans as a part of the system. The system is designed to operate at its maximum operating temperature of 70ºC and at an altitude of 300 meters. If a single fan fails, the system runs at a maximum operating temperature of 65ºC. The fan is not removable and therefore, during a failure, the system must be replaced.

Note

In case of fan failure, we recommend that you get a qualified technician to replace the faulty device within 96 hours.

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Licensing

Overview

The Cisco ASR-920-20SZ-M Router support the following types of licenses:

• Port Licensing—Port Upgrade license is available as a "Pay as you Grow" model.

• 1G upgrade license

• 10G upgrade license

• Bulk licensing—Bulk port licensing allows you to enable all the ports with a single license.

• Timing license (1588)—Timing license is required if the router is used as a master clock.

• Advanced Metro IP Access

• Metro IP Access

• Metro Access (default)

The following methods are used to activate the above licenses:

• Cisco Software Licensing—The Cisco Software License Activation feature is a set of processes and components to activate Cisco software feature sets by obtaining and validating fee-based Cisco software licenses.

Note

Licenses generated by the Cisco Software Licensing are tied to the UDI of the chassis and a corresponding watchtower device certificate (WDC) is stored in the system.

• Cisco Smart Licensing—Smart Licensing is usage-based licensing where devices register with the Cisco Secure server.

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Prepare for Installation

Before you install the router, you must prepare your site for the installation.

Preparing your site involves these tasks:

• Site Planning, on page 15

• Receive the Device, on page 21

Site Planning

The sections describe how to plan for the installation of the Cisco ASR 920 Series Router.

General Precautions

Observe the following general precautions when using and working with your Cisco ASR 920 Router:

• Keep your system components away from radiators and heat sources and do not block cooling vents.

• Do not spill food or liquids on your system components and never operate the product in a wet environment.

• Do not push any objects into the openings of your system components. Doing so can cause fire or electric shock by shorting out interior components.

• Position system cables and power supply cable carefully. Route system cables and the power supply cable and plug so that they are not stepped on or tripped over. Be sure that nothing else rests on your system component cables or power cable.

• Do not modify power cables or plugs. Consult a licensed electrician or your power company for site modifications. Always follow your local and national wiring rules.

• If you turn off your system, wait at least 30 seconds before turning it on again to avoid damage of system components.

CHAPTER 3

Site Planning Checklist

Use the following checklist to carry out all site planning tasks:

• The site meets environmental requirements.

• The site’s air conditioning system can compensate for the heat dissipation of the chassis.

• The floor space that the chassis occupies can support the weight of the system.

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Site Selection Guidelines

• Electrical service to the site complies with the safety with electricity requirements.

• The electrical circuit servicing the chassis complies with the power supply requirements.

• Console port wiring and cabling limitations have been considered in accordance to TIA/EIA-232F.

• The chassis Ethernet cabling distances are within prescribed limits.

• The equipment rack where the chassis is to be installed complies with prescribed requirements.

• When selecting rack location, safety, ease of maintenance, and proper airflow requirements have been considered.

Site Selection Guidelines

The device requires specific environmental operating conditions. Temperature, humidity, altitude, and vibration can affect the performance and reliability of the device.

The device is designed to meet the industry EMC, safety, and environmental standards.

Prepare for Installation

Airflow for Site Planning

Table 2: Cisco ASR-920-20SZ-M Airflow

ASR-920-20SZ-M

Environmental Requirements

Environmental monitoring of the chassis protects the system and components from damage due to excessive voltage and temperature conditions. To ensure normal operation and avoid unnecessary maintenance, plan and prepare your site configuration before installation. After installation, ensure that the environmental characteristics continue to be met.

For an outside plant installation (cell site cabinet, hut, and so on), you require to protect the chassis against airborne contaminants, dust, moisture, insects, pests, corrosive gases, polluted air, or other reactive elements. We recommend that you install the unit in a fully sealed enclosure or cabinet. Examples of such cabinets include IP65 cabinets with heat exchanger complying with Telcordia GR487. Temperature must be maintained within –40ºC to 70ºC.

Place the device inside a space that is protected from direct weather and environmental stresses by an enclosure.

FeatureDevice

power supply

Maximum System Airflow (CFM) at Maximum System Temperature

93.020GE SFP, 4Cu and 4-10GE: Modular

Ensure the operating climate as defined by Class 2 of GR-3108-CORE for premium variants.

• –40°C (-40°F) and 70°C (158°F)

• 5 and 85% RH

Ensure the operating climate as defined by Class 1 of GR-3108-CORE for base variants.

• –5°C (23°F) and 50°C (122°F)

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Prepare for Installation

• < 15 to 85% RH

Physical Characteristics

To set the device at its proper location, be familiar with its physical characteristics.

Airflow Guidelines

Cool air is circulated through the chassis by fans that are located along the back of the device.

The internal fans maintain acceptable operating temperatures for the internal components by drawing in cool air through the vents and circulating that air through the chassis.

The direction of airflow is from front-to-back.

To ensure adequate airflow through the equipment rack, we recommend that you always maintain a minimum clearance distance as mentioned in the following specifications.

• Front clearance—5 inches (12.7 centimeters)

• Rear clearance—3.93 inches (10 centimeters)

Physical Characteristics

Note the following points:

• When installing chassis in a back-to-back position with another device, ensure a minimum of 3.93 inches (10 centimeters) airflow clearance between them. Also, ensure that the device behind the chassis is not installed in a way that it blows air into the chassis.

• An over-temperature condition may occur within the rack, if airflow through the rack and the device is restricted, or if the air that is drawn into the rack is warm.

• Ensure that the site is dust free. Dust tends to clog the device fans, reducing the flow of cooling air through the equipment rack and the devices that occupy it, thus increasing the risk of an over-temperature condition.

• Enclosed racks must have adequate ventilation. Because each device generates heat, ensure that the racks are not congested. An enclosed rack must have louvered sides and a fan to provide cool air. Heat that is generated by the equipment near the bottom of the rack may be drawn upward into the intake ports of the equipment above.

• When mounting a chassis on an open rack, ensure that the rack frame does not block the exhaust fans.

• When a rack-installed equipment fails, especially equipment on an enclosed rack, if possible try operating the equipment by itself. Power off all other equipment on the rack (and in adjacent racks) to give the device maximum cooling air and clean power.

• Avoid installing the chassis in a location in which the chassis air intake vents may draw in the exhaust air from an adjacent equipment. Consider how the air flows through the device; the airflow direction is from front to back, with ambient air drawn in from the vents located on the sides of the chassis.

Caution

When mounting the device on any type of rack equipment, ensure that the temperature of inlet air to the device does not exceed the specified operating temperature limits of the product.

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Airflow Guidelines for ETSI Rack Installation

When you install a device on a 2 or 4-post rack, the front and rear doors of the cabinet must be removed. We recommended that you always maintain a minimum clearance distance as mentioned the following.

• Front clearance—5 inches (12.7 centimeters)

• Rear clearance—3.93 inches (10 centimeters)

To mount the chassis in a 4-post enclosed cabinet, ensure a minimum of 3.93 inches (10 centimeters) of clearance on each side of the chassis.

Floor Loading Considerations

Ensure that the floor under the rack supporting the chassis is able to support the combined weight of the rack and all the other installed equipment.

For additional information about floor loading requirements, see the GR-63-CORE, Network Equipment

Building System (NEBS) Requirements: Physical Protection document.

Prepare for Installation

Site Power Guidelines

The chassis has specific power and electrical wiring requirements. Adhering to these requirements ensures reliable operation of the system. Follow these precautions and recommendations when planning your site power for the chassis:

• The redundant power option provides a second, identical power supply to ensure uninterrupted power supply.

• Connect each power supply to a separate input power source. Otherwise, it results in total power failure to the system due to a fault in the external wiring or a tripped circuit breaker.

• To prevent loss of input power, ensure that the maximum load on each circuit is within the current ratings of the wiring and the breakers.

• Check the power at your site before installation, and periodically after installation, to ensure that you are receiving clean power. If necessary, install a power conditioner.

• Provide proper grounding to avoid personal injury and damage to the equipment due to power surges or lightning striking power lines. The chassis ground must be attached to a central office or other interior ground system.

Caution

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.

Note

The chassis installation must comply with all the applicable codes, and is approved for use with only copper conductors. The ground bond-fastening hardware must be compatible and preclude loosening, deterioration, and electrochemical corrosion of hardware and joined material. Attachment of the chassis ground to a central office or other interior ground system must be made with a 6-AWG gauge wire copper ground conductor.

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Prepare for Installation

Electrical Circuit Requirements

Each chassis requires a dedicated electrical circuit. If you equip the device with dual-power feeds, provide a separate circuit for each power supply to avoid compromising the power redundancy feature.

The chassis supports both DC source or an AC source. Ensure that equipment grounding is present and observe power-strip ratings. Make sure that the total ampere rating of all the products plugged into the power strip does not exceed 80% of the rating.

Site Cabling Guidelines

This section contains guidelines for wiring and cabling at your site. When preparing your site for network connections to the chassis, consider the type of cable that is required for each component and cable limitations. Consider the distance limitations for signaling, electromagnetic interference (EMI), and connector compatibility. Possible cable types are fiber, thick or thin coaxial, foil twisted-pair, or unshielded twisted-pair cabling.

Also, consider any additional interface equipment that you need, such as transceivers, hubs, switches, modems, channel service units (CSU), or data service units (DSU).

Before you install the chassis, have on hand all additional external equipment and cables. For information about ordering, contact a Cisco customer service representative.

Electrical Circuit Requirements

The extent of your network and the distances between the network interface connections depend, in part, on the following factors:

• Signal type

• Signal speed

• Transmission medium

The distance and rate limits that are referenced in the following sections are the IEEE-recommended maximum speeds and distances for signaling purposes. Use this information as a guideline when planning your network connections before installing the chassis.

If wires exceed the recommended distances, or if wires pass between buildings, give special consideration to the possibility of a lightning strike in your vicinity. The electromagnetic pulse due to lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices. If you have had problems of this sort in the past, you may want to consult experts in electrical surge suppression and shielding.

Asynchronous Terminal Connections

The chassis provides a console port to connect a terminal or computer for local console access. The port has an RJ-45 connector and supports RS-232 asynchronous data with distance recommendations that are specified in the IEEE RS-232 standard.

Interference Considerations

When wires are run for any significant distance, there is a risk of receiving stray signals on the wires as interference. If interference signals are strong, it results in data errors or equipment damage.

The following sections describe the sources of interference and how to minimize their effects on the chassis.

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Electromagnetic Interference

All the equipment that is powered by AC current can propagate electrical energy that can cause EMI and possibly affect the operation of other equipment. The typical sources of EMI are equipment power cords and power service cables from electric utilities.

Strong EMI can destroy the signal drivers and receivers in the chassis. It can even create an electrical hazard by causing power surges through the power lines into installed equipment. These problems are rare, but could be catastrophic.

To resolve these problems, you need specialized knowledge and equipment that could consume substantial time and money. However, you can ensure that you have a properly grounded and shielded electrical environment, paying special attention to the need for electrical surge suppression.

Radio Frequency Interference

When electromagnetic fields act over a long distance, radio frequency interference (RFI) may be propagated. Building wiring can often act as an antenna, receiving the RFI signals and creating more EMI on the wiring.

If you use a twisted-pair cable in your plant wiring with a good distribution of grounding conductors, the plant wiring is unlikely to emit radio interference. If you exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal.

Prepare for Installation

Lightning and AC Power Fault Interference

If signal wires exceed the recommended cabling distances, or if signal wires pass between buildings, you may encounter a lightning strike on the chassis.

The electromagnetic pulse (EMP) generated by lightning or other high-energy phenomena can couple enough energy into unshielded conductors and damage or destroy electronic equipment. For such problems, you must consult with RFI and EMI experts to ensure adequate electrical surge suppression and shielding of signal cables in your operating environment.

Rack-Mounting Guidelines

The following sections provide guidelines for selecting racks and precautions for mounting the chassis on a rack:

Precautions for Rack-Mounting

Follow these rack-mount guidelines to ensure your safety:

• Ensure that the rack is level and stable before extending a component from the rack.

• Ensure that proper airflow is provided to the components on the rack.

• Do not step on or stand on any component or system when servicing other systems or components on a rack.

• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the chassis.

Rack Selection Guidelines

Ensure the 2 or 4-post, 19 inches (48.3 centimeters) or 23 inches (58.42 centimeters) rack that you select complies with the Electronic Industries Association (EIA) standard for equipment racks (EIA-310-D). The rack must have at least two posts with mounting flanges to mount the chassis.

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Prepare for Installation

Receive the Device

Caution

When mounting a chassis in any type of rack equipment, ensure that the temperature of the inlet air to the chassis does not exceed the specified operating temperature of the chassis.

The distance between the center lines of the mounting holes on the two mounting posts must be 18.31 inches (46.50 centimeters) ± 0.06 inch (± 0.15 centimeter). The rack-mounting hardware included with the chassis is suitable for most 19 inches (48.3 centimeters) equipment racks.

Install the chassis on a rack with the following features:

• NEBS-compliant, 19 inches (48.3 centimeters) rack or 23 inches (58.42 centimeters).

• EIA or European Telecommunications Standards Institute (ETSI) hole patterns in the mounting rails. The required mounting hardware is shipped with the chassis. If the rack on which you plan to install the chassis has metric-threaded rails, you must provide your own metric-mounting hardware.

• Perforated top and open bottom for ventilation to prevent overheating.

• Leveling feet for stability.

Do not install the device on an enclosed rack because the chassis requires an unobstructed flow of cooling air to maintain the acceptable operating temperature. If you use an enclosed rack, ensure that the airflow requirements are maintained as discussed in the Airflow Guidelines section.

Receive the Device

Each device is shipped in a container that is strapped to a pallet.

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Receive the Device

Prepare for Installation

Figure 2: The Router Packaged for Shipping

DescriptionLabelDescriptionLabel

Packing carton4Outside carton for

accessories

Accessories tray5Assembly packaging

material

——Router3

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Prepare for Installation

Unpack and Verify Shipped Contents

Procedure

Step 1 Inspect the shipping container for any shipping damage. If there is obvious physical damage, contact your

Cisco service representative, else continue with the remaining steps.

Step 2 Unpack the device.

Step 3 Inspect the device.

Step 4 Use the following table to verify the contents of the container. Do not discard the shipping container. You

will need the container in the future if you move or ship the device.

What to do next

Table 3: Default Shipping Container Contents

Unpack and Verify Shipped Contents

Optional equipment

Note

DescriptionComponent

Cisco ASR-920-20SZ-MDevice

One disposable wrist strap (optional)ESD, wrist strap (disposable)

Cisco ASR 920 Series Router Pointer CardDocumentation

Check the container for the following optional equipment:

• Power cord if an AC power supply is shipped.

• Lugs if a DC power supply is shipped.

Note

If you do not specify the type of power cable, US power cable for the AC device variant is supplied.

Most Cisco documentation is available online. The chassis Pointer Card that is shipped with your Cisco ASR 920 Series Router contains links and information to other online documentation.

If the product is not in use, store the device in the initial packaged condition or in an ESD PE sealed bag with silica gel.

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Tools and Equipment

Prepare for Installation

Table 4: Accessories Kit

AccessoriesPIDCategoryVariant

YesA920-RCKMT-1919 inchesASR-920-20SZ-M

YesA920-RCKMT-23-H23 inches

YesA920-RCKMT-ETSIETSI

YesA920-RCKMT-19Wall mount

NoNADesktop

Tools and Equipment

You need the following tools and equipment to install and upgrade the device and its components:

• ESD-preventive cord and wrist strap

• Antistatic mat or antistatic foam

• Number 1 and Number 2 Phillips-head screwdrivers

• #12-24 pan-head screws to secure the device to the equipment rack.

• Cables for connecting to network ports (based on the configuration)

• Ethernet hub, switch, or PC with a network interface card for connecting to the Ethernet ports

• Console terminal that is configured for 9600 baud, 8 data bits, no parity, no flow control, and 1 stop bit.

• Console cable for connecting to the console port

• Ratcheting torque screwdriver with a Phillips head that exerts up to 30-pound force per square inch (0.02-kilograms force per square millimeter (kgf/mm2)) of pressure.

• Crimping tool as specified by the ground lug manufacturer

• Wire-stripping tools for stripping both 6 and 14-AWG wires

• Tape measure and level

• Ratcheting torque screwdriver with a Phillips head that exerts up to 15 inch-pounds (1.69 newton meters) of torque for attaching the ground wire to the device.

Cable bracket

YesA920-CBL-GUIDE

A920-CBL-BRKT-E (ETSI)

YesA920-DRIP-TRAYDip Tray

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Install the Router

Before you begin this task, ensure that you have read and understood the safety warnings in the Standard

Warning Statements section of the Safety Warnings handout topic.

Installing the Cisco ASR-920-20SZ-M Router involves these tasks:

• Rack Compatibility, on page 25

• Set up Device on Rack or Wall, on page 27

• Ground the Device, on page 36

• Connect Power Cables, on page 37

• Connect Gigabit Ethernet Ports, on page 41

• Connect Chassis to Network, on page 44

Rack Compatibility

We recommend that you follow these rack specifications.

CHAPTER 4

Rack Types

Figure 3: Rack specification EIA (19 inches and 23 inches)

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Rack Types

Install the Router

Table 5: Rack specification EIA (19 inches and 23 inches)

4 Post

2 Post

4 Post

2 Post

Figure 4: Four Post Rack Type

Rack TypePost Type

centimeters)

Rack Front Opening (X)

Rack Mounting Hole Centre-Centre (Y)

Mounting Flange Dimension (Z)

482.6mm (19”)465mm (18.312”)450.8mm (17.75”)19 inches (48.3

584.2mm (23”)566.7mm (22.312”)552.45mm (21.75”)23 inches (58.4

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Set up Device on Rack or Wall

Figure 5: Two Post Rack Type

Set up Device on Rack or Wall

You can choose to either set up the Cisco ASR 920 Router on a rack or wall mount it.

Rack Mount

You can choose to either set up the router in a horizontal or a vertical mounting position on the rack.

Install Rack Brackets

The device is shipped with rack mounting brackets that are to be secured on the sides of the device.

Procedure

Step 1 Remove the rack mounting brackets from the accessory kit and position them beside the device.

Note

You can install the brackets at any of the 3 positions that are shown in the figure.

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Install Rack Brackets

Install the Router

Figure 6: Attaching Mounting Brackets to Router for a 19-inch EIA Rack (Front Position)

Figure 7: Attaching Mounting Brackets to Router for a 19-inch EIA Rack (Middle Position)

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Install the Router

Install Rack Brackets

Figure 8: Attaching Mounting Brackets to Router for a 19-inch EIA Rack (Rear Position)

Figure 9: Attaching Mounting Brackets to Router for a 23-inch EIA Rack (Front Position)

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Install Rack Brackets

Install the Router

Figure 10: Attaching Mounting Brackets to Router for a 23-inch EIA Rack (Middle Position)

Figure 11: Attaching Mounting Brackets to Router for a 23-inch EIA Rack (Rear Position)

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Install the Router

Install Rack Brackets

Figure 12: Attaching Mounting Brackets to Router for a ETSI Rack (Front Position)

Figure 13: Attaching Mounting Brackets to Router for a ETSI Rack (Middle Position)

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Set up Device on Rack

Install the Router

Figure 14: Attaching Mounting Brackets to Router for a ETSI Rack (Rear Position)

Step 2 Secure the bracket to the device with the recommended maximum torque of 10 inch-pounds (1.1 newton

meters).

Set up Device on Rack

Note

Ensure adequate clearance when mounting the device on a rack.

Note

Install cable guides before installing the device in a 19 inches (48.3 centimeters) EIA rack.

Procedure

Step 1 Position the device on the rack, and use the images as a guide to set up the device.

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Install the Router

Attaching the Cable Guides

Figure 15: Set up Device on Rack

Step 2 Use a tape measure and level to verify that the device is installed straight and on level.

Attaching the Cable Guides

Note

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

Procedure

Step 1 Position the cable A920-CBL-GUIDE (left and right) against the front of the chassis and align the two screw

holes, as shown in the figure.

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Wall Mount

Install the Router

Figure 16: Attach Cable Guides

Step 2 Secure the cable guides with the two M6x12mm screws supplied with the cable kit. The recommended

maximum torque is 26 inch-pounds (3 newton meters).

Wall Mount

Install the wall mounting brackets and cable guides on to the chassis before you mount the chassis on the wall.

Install Wall Brackets

The device is shipped with wall mounting brackets that are to be secured on the sides of the device.

Procedure

Step 1 Remove the wall mounting brackets from the accessory kit and position them beside the device.

Note

You can install the brackets as shown in the figure.

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Install the Router

Wall Mount the Device

Figure 17: Wall Mount Bracket

Step 2 Secure the bracket to the device with the recommended maximum torque of 10 inch-pounds (1.1 newton

meters).

Wall Mount the Device

Note

Install cable guides before mounting the device on the wall.

Procedure

Step 1 Position the cable guide against the front of the device, and align the four screw holes as shown in the figure.

Step 2 Use a tape measure and level to verify that the device is installed straight and on level.

Step 3 Secure the cable guides with four M6x12mm screws that are supplied with the cable kit. The recommended

maximum torque is 26 inch-pounds (3 newton meters).

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Ground the Device

Step 4 Position the device vertically on the wall.

Figure 18: Mounting the Router on the Wall

Install the Router

Caution

Before mounting the device, ensure that all unused holes at the sides of the device are protected with screws.

Ground the Device

Before you begin this task, ensure that you have read and understood the safety warnings in the Preventing

ESD Damage section of the Safety Warnings handout topic.

Before you connect the power or turn on the power to the device, you must provide an adequate device ground (earth) connection to your device.

This section describes how to ground the device. The grounding lug location is on the back panel of the device.

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Install the Router

Tip

Ensure that the grounding lug wire does not cover the fan opening.

Figure 19: Attach a Ground Lug to the Rear of the Device

Connect Power Cables

Caution

To prevent personal injury or damage to the chassis, before making connections to the device, ensure that you disconnect the power at the circuit breaker.

Verify your carrier’s requirements for grounding. This unit must be installed in a restrictive access location and must be permanently grounded to a minimum 6-AWG copper ground wire.

Procedure

Step 1 If your ground wire is insulated, use a wire-stripping tool to strip the ground wire to 0.5 inch (12.7 millimeters)

± 0.02 inch (± 0.5 millimeters).

Figure 20: Stripping a Ground Wire

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

Step 3 Using a crimping tool (the one specified by the ground lug manufacturer), crimp the ground lug to the ground

wire.

Step 4 Use a Phillips head screwdriver to attach the 2-hole ground lug and wire assembly to the device with the 2

pan-head Phillips head screws.

Step 5 Connect the other end of the ground wire to a suitable grounding point at your site.

Connect Power Cables

Before you begin this task, ensure that you have read and understood the safety warnings in the Safety with

Electricity section of the Safety Warnings handout topic.

The Cisco ASR-920-20SZ-M Router supports both AC and DC power supplies. Based on your device power supply, attach the AC and the DC power cables.

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Activate an AC Power Supply

Follow these steps to activate an AC power supply:

Procedure

Step 1 Attach the AC power retainer cord as shown in the figure below.

Figure 21: Attaching the AC Power Retainer Cord

Install the Router

Step 2 Lift the power retainer and plug in the AC power supply.

Step 3 Push the retainer cord towards the power supply cord to lock it in place as shown in the figure below.

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Install the Router

Activate an AC Power Supply

Figure 22: Locking the Power Retainer Cord

Step 4 Connect the other end of the power cord to an AC-input power source.

Step 5 Verify power supply operation by checking that the power supply LED is green.

Step 6 If the LEDs indicate a power problem, see LED Indicators section for troubleshooting information.

Step 7 If you are installing a redundant power supply, repeat these steps for the second power source.

Note

If you are installing a redundant AC power supply, ensure that each power supply is connected to a separate power source in order to prevent power loss in the event of a power failure.

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Attach Cables to the DC Power Supply

Note

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.

To attach the DC power supplies:

Procedure

Step 1 Open the DC power supply guard.

Step 2 Attach the DC supply wires in the designated screws. See the figure below.

Figure 23: Connecting the DC Power Supply Wires

Install the Router

Step 3 Close the DC power supply guard.

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Install the Router

Power On the DC Power Supply

After the router is either rack mounted or mounted on the wall, perform these tasks to complete the installation:

Procedure

Step 1 Power on the DC power supply. See the figure below.

Figure 24: Powering on the DC Power Supply

Power On the DC Power Supply

power on/off switch1

Step 2 Connect the front-panel ports.

Connect Gigabit Ethernet Ports

Gigabit Ethernet (GE) ports can be connected to other devices using either fiber optic or copper cables. The choice depends on whether the communication distance between your devices is long or short.

If you choose fiber optic cables, connect suitable Small Form-factor Pluggable (SFP) modules. The device supports various SFP and SFP+ modules, including optical and Ethernet modules. For information on how to install and remove SFP and SFP+ modules, see the documentation for the SFP or SFP+ module at: Cisco

SFP and SFP+ Transceiver Module Installation Notes. Select the port on the device where you insert the SFP

module.

If you choose copper cables, connect to an RJ-45 connector.

The device 10/100/1000 ports configure themselves to operate at the speed of devices to which they are connected. By default, autonegotiation is enabled in the chassis. You can manually set the speed and the duplex parameters. If the device to which the ports are connected does not autonegotiate, low performance or no linkage may result.

To maximize performance, choose one of these methods for configuring the GE ports:

• Have ports autonegotiate both speed and duplex parameters.

• Set speed and duplex parameters on both ends of the connection.

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Connect SFP Modules

Use the mdix auto command in the interface configuration mode to enable an automatic media-dependent interface with crossover detection. After you enable the automatic media-dependent interface, the device detects the required cable type for copper Ethernet connections and configures the interface accordingly. Then, use either a crossover or a straight-through cable for connecting to a copper 10/100/1000 port. If the mdix auto command fails to enable the interface, connect the cable through SFP modules.

Connect SFP Modules

Before you begin this task, ensure that you have read and understood the safety warnings in the Safety

Precautions for Module Installation and Removal section of the Safety Warnings handout topic.

Use only Cisco SFP modules on a Cisco device. Each SFP module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the SFP modules meet the requirements of the device.

Install the Router

Caution

We recommend that you wait for 30 seconds between the removal and insertion of an SFP module from the device. The wait period allows the transceiver software to initialize and synchronize with the device. Changing an SFP before this wait period could result in transceiver initialization issues that disable the SFP.

This section provides procedures for installing and connecting SFP modules. Also, it provides the procedure for removing SFP modules.

Install SFP Modules

Caution

We strongly recommend that you do not install (or remove) an SFP module with its cables connected because of the potential damage that may be caused to the cables, the cable connector, or the optical interfaces in the SFP modules. Disconnect all cables before removing or installing an SFP module.

Removing and installing an SFP module can shorten its useful life. Do not remove and insert SFP modules unless necessary.

The following figure shows an SFP module that has a bale-clasp latch.

Figure 25: SFP Module with Bale-Clasp Latch

Some SFP modules identify the top side of the module with send (TX) and receive (RX) has markings or arrows that show the direction of the connection. If the SFP module that you are using has such markings, use them to identify the top of the module.

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Install the Router

Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.

Step 2 Align the SFP module at the front of the slot opening.

Step 3 Insert the SFP module into the slot until the connector on the module snaps into place at the rear of the slot.

Remove SFP Modules

Procedure

Caution

Step 4 Insert the appropriate cable connector into the SFP module:

• For fiber-optic SFP modules, insert the LC cable.

• For copper 1000BASE-T SFP modules, insert the RJ-45 cable.

Remove SFP Modules

Follow these steps to remove an SFP module when it is necessary.

Procedure

Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on the chassis.

Step 2 Disconnect the cable from the SFP module, and insert a dust plug into the cable end.

Step 3 Unlock and remove the SFP module.

If the module has a bale-clasp latch, pull the bale down and out to eject the module. If the bale-clasp latch is obstructed, use a small, flat-blade screwdriver or any other narrow instrument to open the bale-clasp latch.

Do not remove the dust plugs from the fiber-optic SFP module port or the rubber caps from the fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the SFP module ports and cables from contamination and ambient light. Store the dust plugs for later use.

Step 4 Grasp the SFP module between your thumb and index finger, and carefully remove it from the module slot.

Step 5 For fiber-optic SFP modules, insert a dust plug into the optical ports of the SFP module to keep the optical

interfaces clean.

Step 6 Place the removed SFP module in an antistatic bag or other protective environment.

For information about inspecting and cleaning fiber-optic connections, see: Inspection and Cleaning Procedures

for Fiber-Optic Connections.

Connect Fiber Optic SFP Modules

Caution

Do not remove the rubber plugs from the SFP module port or from the fiber optic cable until you are ready to connect the cable. The plugs and caps protect the SFP module ports and cables from contamination and ambient light.

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Connect RJ-45 Connector

Procedure

Step 1 Remove the rubber plugs from the module port and fiber optic cable, and store them for future use.

Step 2 Insert one end of the fiber optic cable into the SFP module port.

Step 3 Insert the other end into a fiber optic connector at a target device.

Step 4 Observe the port's LED status.

The LED turns green when the device and the target device establish a link.

If the LED is off, check whether the target device is turned on, or whether there is any failure in the target device.

Step 5 If necessary, reconfigure and restart the device or target device.

Connect RJ-45 Connector

Install the Router

Procedure

Step 1 To connect to workstations, servers, and devices, connect a straight-through cable to an RJ-45 connector at

the front panel.

When connecting to devices or repeaters, use a crossover cable.

Step 2 Connect the other end of the cable to an RJ-45 connector at the other device. The port's LED turns on when

both the device and the connected device have established a link.

If the port LED does not turn on, check whether the device at the other end is turned on or whether there is any failure.

Note

Step 3 Reconfigure and reboot the connected device if necessary.

Step 4 Repeat Steps 1 to 3 for each device that is to be connected.

On user network interface (UNI) ports, the port LED turns green after the link is established.

Connect Chassis to Network

Note

Connect only SELV services to all the device ports.

Connecting Console Cables

This section describes how to connect to the Cisco ASR 920 Router using console cables:

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Install the Router

Connecting to the USB Serial Port Using Microsoft Windows

This procedure shows how to connect to the USB serial port using Microsoft Windows.

Note

Install the USB device driver before establishing a physical connection between the router and the PC, by plugging the USB console cable into the USB serial port. Otherwise, the connection fails. For more information, see the Installing the Cisco USB Device Driver section.

Procedure

Step 1 Connect a USB Type A-to-Type A cable to the USB console port, as shown in figure. If you are using the

USB serial port for the first time on a Windows-based PC, install the USB driver now according to the instructions in the following sections:

• Installing the Cisco USB Device Driver

• Uninstalling the Cisco USB Device Driver

Note

You cannot use the USB port and the EIA port concurrently. When the USB port is used, it takes priority over the EIA port.

Step 2 Connect the USB Type A cable to the PC.

Step 3 To communicate with the router, start a terminal emulator application, such as Microsoft Windows

HyperTerminal. Configure the software with the following parameters:

• 9600 baud

• 8 data bits

• no parity

• 1 stop-bit

• no flow control

Figure 26: Connecting the USB Console Cable to the Cisco ASR 920 Router

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Connecting to the Console Port Using Mac OS X

Install the Router

CableLabelCableLabel

Connecting to the Console Port Using Mac OS X

This procedure describes how to connect a Mac OS X system USB port to the console using the built-in OS X terminal utility.

Procedure

Step 1 Use the Finder to choose Applications > Utilities > Terminal.

Step 2 Connect the OS X USB port to the router.

Step 3 Enter the following commands to find the OS X USB port number:

Example:

macbook:user$ cd /dev macbook:user$ ls -ltr /dev/*usb* crw-rw-rw- 1 root wheel 19, 6 Dec 9 16:25 /dev/tty.usbmodem1411 crw-rw-rw- 1 root wheel 19, 7 Dec 9 16:25 /dev/cu.usbmodem1411DT-macbook:dev user$

2USB Type-A console port1

USB USB Type-A to USB Type-A console cable

Step 4 Connect to the USB port with the following command followed by the router USB port speed:

Example:

macbook:user$ screen /dev/tty.usbmodem1411 9600

To disconnect the OS X USB console from the terminal window, enter Ctrl-a followed by Ctrl-\

Connecting to the Console Port Using Linux

This procedure shows how to connect a Linux system USB port to the console using the built-in Linux terminal utility.

Procedure

Step 1 Open the Linux terminal window.

Step 2 Connect the Linux USB port to the router.

Step 3 Enter the following commands to find the Linux USB port number:

Example:

root@usb-suse# cd /dev root@usb-suse /dev# ls -ltr *ACM*

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crw-r--r-- 1 root root 188, 0 Jan 14 18:02 ttyACM0 root@usb-suse /dev#

Step 4 Connect to the USB port with the following command, followed by the router USB port speed:

Example:

root@usb-suse /dev# screen /dev/ttyACM0 9600

To disconnect the Linux USB console from the terminal window, enter Ctrl-a followed by : then quit

Installing the Cisco USB Device Driver

A USB device driver must be installed the first time a Microsoft Windows-based PC is connected to the USB serial port on the router.

This procedure describes how to install the Microsoft Windows USB device driver in Microsoft Windows XP / Windows Vista / Windows 2000 / Windows 7 / Windows 8. Download the driver for your router model from the Tools and Resources Download Software site, USB Console Software category.

Installing the Cisco USB Device Driver

Note

To Download the driver, you must have a valid service contract associated to your Cisco.com profile.

Procedure

Step 1 Unzip the file asr-9xx_usbconsole_drivers.zip.

Step 2 Double-click xrusbser_ver2100_installer.exe in the XR21x141x-Win-DriversOnly-Vers2.1.0.0/EXE folder.

Installation Wizard GUI is displayed.

Step 3 Click Next. The InstallShield Wizard Completed window is displayed.

Step 4 Click Finish.

Step 5 Connect the USB cable to the PC and router USB console ports. Follow the on-screen instructions to complete

the installation of the driver.

Step 6 XR21V1401 USB UART Device driver successfully installed message is displayed.

The USB console is ready for use.

Uninstalling the Cisco USB Device Driver

This procedure describes how to uninstall the Microsoft Windows USB device driver in Microsoft Windows XP / Windows Vista / Windows 2000 / Windows 7 / Windows 8.

Note

Disconnect the router console terminal before uninstalling the driver.

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Connecting a USB Flash Device

Procedure

Step 1 Choose Start > Control Panel > Add or Remove Programs (Uninstall a program).

Step 2 Scroll to Windows Driver Package - Exar corporation (xrusbser) Ports and click Remove. The Program

Maintenance window is displayed.

Step 3 Click Yes to uninstall the driver.

Connecting a USB Flash Device

To connect a USB flash device to the Cisco ASR 920 Router, insert the memory stick in the USB port labeled USB MEM. The flash memory module can be inserted only one way, and can be inserted or removed regardless of whether the router is powered up or not.

The following figure shows the USB port connector on the Cisco ASR 920 Router.

Figure 27: Cisco ASR 920 Router Flash Token Memory Stick

Install the Router

Removing a USB Flash Device

To remove and replace a USB flash token memory stick from and into a Cisco ASR 920 Router, follow these steps:

Procedure

Step 1 Execute the eject usb0: command before removing the USB from the router.

Example:

rommon 2 > eject usb0 rommon 2 >

If you do not run this command before removing the USB, the following error message is displayed:

rommon 2 > dir usb0:

usb_stor_BBB_comdat:usb_bulk_msg error failed to send CBW status 34 RESET:stall usb_stor_BBB_comdat:usb_bulk_msg error failed to send CBW status 34 RESET:stall usb_stor_BBB_comdat:usb_bulk_msg error

Step 2 Pull the memory stick from the USB port.

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Install the Router

Step 3 To replace the Cisco USB flash memory stick, simply insert the module into the USB port labeled USB MEM,

as shown in figure. The flash memory module can be inserted only one way, and can be inserted or removed regardless of whether the router is powered up or not.

This completes the USB flash memory installation procedure.

Connecting Timing Cables

The sections describe how to connect timing cables to the Cisco ASR 920 Router:

Connecting Timing Cables

Warning

To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, connect the ToD ports only to intra-building or unexposed wiring or cable. The intrabuilding cable must be shielded and the shield must be grounded at both ends. The intra-building port(s) of the equipment or subassembly must not be metallically connected to interfaces that connect to the OSP or its wiring. These interfaces are designed for use as intra-building interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE) and require isolation from the exposed OSP cabling. The addition of Primary Protectors is not sufficient protection in order to connect these interfaces metallically to OSP wiring.

Connecting a Cable to the BITS Interface

The following steps describe how to connect a cable to the router’s BITS port:

Procedure

Step 1 Confirm that the router is powered off.

Step 2 Connect one end of the cable to the BITS port using a straight-through, shielded RJ48C-to-RJ48C cable.

Step 3 Connect the other end to the BTS patch or demarcation panel at your site.

Step 4 Turn on the power to the router.

For information about the BITS port pinouts, see the Troubleshooting section.

Connecting Cables to the GPS Interface

The sections describe how to connect cables from the Cisco ASR 920 Router to a GPS unit for input or output timing of frequency:

Note

When installing the cables to the RSP, we recommend that you leave a service loop of extra cable to enable fan tray removal.

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Connecting a Cable to the Input 10-Mhz or 1-PPS Interface

Procedure

Step 1 Connect one end of a shielded mini-coax cable to the GPS unit.

Step 2 Connect the other end of the shielded mini-coax cable to the 10-Mhz or 1-PPS port on the RSP of the Cisco

ASR 920 Router.

Connecting a Cable to the Output 10-Mhz or 1-PPS Interface

Procedure

Step 1 Connect one end of a shielded mini-coax cable to the Slave unit.

Step 2 Connect the other end of the shielded mini-coax cable to the 10-Mhz or 1-PPS port on the RSP of the Cisco

ASR 920 Router.

Install the Router

Connecting a Cable to the ToD Interface

Procedure

Step 1 Connect one end of a straight-through Ethernet cable to the GPS unit.

Step 2 Connect the other end of the straight-through Ethernet cable to the ToD or 1-PPS port on the RSP of the Cisco

ASR 920 Router.

Note

For instructions on how to configure clocking, see the Cisco ASR 920 Series Aggregation Services Routers Configuration Guide.

Connect to EIA Console Port

Note

The serial console cable kit is not included with the device; it must be ordered separately.

Procedure

Step 1 Connect the RJ-45 cable to the EIA Console port.

Step 2 Connect the DB-9 end of the console cable to the DB-9 end of the terminal.

Step 3 To communicate with the device, start a terminal emulator application, such as Microsoft Windows

Hyper-Terminal. Configure the software with the following parameters:

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• 9600 baud

• 8 data bits

• No parity

• 1 stop-bit

• No flow control

Connect a Management Ethernet Cable

When using the Ethernet Management port in the default mode (speed-auto and duplex-auto), the port operates in the auto-MDI/MDI-X mode. The port automatically provides the correct signal connectivity through the Auto-MDI/MDI-X feature, and senses a crossover or straight-through cable and adapts to it.

However, the Ethernet Management port may be configured to a fixed speed (10, 100, or 1000 Mbps) through command-line interface (CLI) commands. In such a case, the port is forced to operate in the MDI mode.

Connect a Management Ethernet Cable

When in a fixed-speed configuration and MDI mode, use:

• a crossover cable to connect to an MDI port

• a straight-through cable to connect to an MDI-X port

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Connect a Management Ethernet Cable

Install the Router

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Configure the Device

Before you begin this task, ensure that you have read and understood the safety warnings in the Standard

Warning Statements section of the Safety Warnings handout topic.

Configuring the Cisco ASR 920 Router involves these tasks:

• Power up the Device, on page 53

• Configure Device at Startup, on page 54

• Safely Power Down the Device, on page 57

Power up the Device

After installing your device and connecting cables, start the device with these steps:

CHAPTER 5

Caution

Step 1 Switch on the power supply.

Step 2 Observe the system LEDs to monitor the initialization process.

Do not press any keys on the keyboard until the messages stop appearing, and the PWR LED becomes solid green. Any key that is pressed during this time is interpreted as a command to be executed when the messages stop. That action results in getting the device to power off and start over. It takes a few minutes for the messages to stop appearing.

Procedure

When the system boot is complete (the process takes a few seconds), the device begins to initialize. After the device has booted, the green PWR LED comes and stays on.

Verify the Front Panel LEDs

The front-panel indicator LEDs provide power, activity, and status information useful during bootup. For more detailed information about the LEDs, see the LED Indicators section.

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Verify the Hardware Configuration

To display and verify the hardware features, enter the following commands:

Table 6: Hardware Commands

Configure the Device

DescriptionCommand

show version

show diag slot

Check Hardware and Software Compatibility

To check the minimum software requirements of Cisco IOS-XE software with the hardware installed on your Cisco ASR 920 Router, Cisco maintains the Software Research tool on Cisco.com. The tool provides the minimum Cisco IOS-XE requirements for individual hardware modules and components.

Displays the following information:

• system hardware version

• software version installed

• configuration file names and source

• boot image

• DRAM space

• NVRAM space

• flash memory space

Displays IDPROM information for the assemblies in the device.

Note

To access this tool, you must have a Cisco.com login account.

To access the Software Research tool:

1. Go to http://software.cisco.com/selection/research.html.

2. In the Search by Product tab, type ASR 920.

3. The Cisco Suggested Release versions are displayed.

Configure Device at Startup

This section explains how to create a basic running configuration for your device.

Note

Acquire the correct network addresses from your system administrator or consult your network plan before you create the basic running configuration.

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Configure the Device

Before continuing the configuration process, check the current state of the device by entering the show version command. This command displays the Cisco IOS software release that is available on the device.

For information on modifying the configuration you create, see the Cisco IOS Master Command List, All

Releases.

To configure a device from the console, you must connect a terminal or terminal server to the console port on the device. To configure the device using the management Ethernet port, you must have the device’s IP address.

Access the CLI Using the Console

Procedure

Step 1 When your system is booting, enter no at the prompt.

Example:

Access the CLI Using the Console

--- System Configuration Dialog --Would you like to enter the initial configuration dialog? [yes/no]: no

Step 2 Press Return to enter the user EXEC mode.

The following prompt is displayed:

Router>

Step 3 From the user EXEC mode, enter the enable command:

Router> enable

Step 4 At the password prompt, enter your system password (if a password has not been set on your system, you can

skip this step.)

Password: enablepass

When your password is accepted, the privileged EXEC mode prompt is displayed:

Router#

You now have access to the CLI in privileged EXEC mode. You can enter necessary commands to complete required tasks.

Step 5 To exit the console session, enter the quit command:

Router# quit

Configure Global Parameters

When you first start the setup program, configure certain global parameters that are used for controlling system-wide settings. Perform the following steps to enter the global parameters:

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Check the Running Configuration Settings

Procedure

Step 1 Connect a console terminal to the console port, and then boot the device.

Configure the Device

Note

The following is only an example of the output display; prompts may vary.

When this information appears, it means that you have successfully booted your device:

Example:

Restricted Rights Legend

Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c) of the Commercial Computer Software - Restricted Rights clause at FAR sec. 52.227-19 and subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS sec. 252.227-7013.

cisco Systems, Inc. 170 West Tasman Drive San Jose, California 95134-1706 . . .

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]: yes

Press RETURN to get started!

Step 2 The first sections of the configuration script appear only at an initial system startup. On subsequent uses, the

script begins with a System Configuration Dialog as shown below. When prompted to enter the initial configuration dialog, enter yes.

Would you like to enter the initial configuration dialog? [yes/no] yes

At any point you may enter a question mark '?' for help. Use ctrl-c to abort configuration dialog at any prompt. Default settings are in square brackets '[]'.

Basic management setup configures only enough connectivity for management of the system, extended setup will ask you to configure each interface on the system.

The basic management setup configures enough connectivity for managing the system; the extended setup prompts you to configure each interface on the system.

Check the Running Configuration Settings

To view the value of the settings you have entered, enter the following command in privileged EXEC mode:

device# show running-config

To review the changes you have made to the configuration, enter the following command in EXEC mode and copy run-start stored in the NVRAM.

device# show startup-config

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Configure the Device

Save the Running Configuration to NVRAM

To store the configuration or changes to your startup configuration in NVRAM, enter the following command at the prompt:

device# copy running-config startup-config

This command saves the configuration settings that you create in the device using the configuration mode and the setup facility. If the save action fails, you lose your configuration, and it is not available during your next reload.

Safely Power Down the Device

This section explains how to shut down the device. We recommend that before turning off all power to the device, you issue the reload command. Running this command ensures that, the operating system cleans up all file systems. After the reload operation is complete, the device can be powered down safely.

To power down the device safely:

Save the Running Configuration to NVRAM

Procedure

Step 1 Slip on the ESD-preventive wrist strap included in the accessory kit.

Step 2 Enter the reload command.

Step 3 Click the Enter key when prompted to confirm.

Step 4 Wait for the system bootstrap message before powering down the system:

Step 5 Remove power cables, if any, from the device:

• For power supplies with a circuit breaker switch, position the switch to the 'Off' (O) position.

• For power supplies with a standby switch, place the standby switch in the 'Standby' position.

After powering down the device, wait for a minimum of 30 seconds before powering it on again.

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Safely Power Down the Device

Configure the Device

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CHAPTER 6

Replace the Power Supply

Before you begin this task, ensure that you have read and understood the safety warnings in the Safety with

Electricity section of the Safety Warnings handout topic.

Note

The Cisco ASR-920-20SZ-M Router power supplies are hot-swappable. If you have installed redundant power supplies, you can replace a single power supply without interrupting power to the router.

Caution

To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after a power supply has been removed or replaced.

You can replace the AC or the DC power supply.

• Remove the DC Power Supply, on page 59

• Remove the AC Power Supply, on page 61

Remove the DC Power Supply

Note

This equipment is suitable for installation in Network Telecommunications Facilities and locations where the NEC applies. The equipment is suitable for installation as part of the Common Bonding Network (CBN).

Caution

The grounding architecture of this product is DC-isolated (DC-I) for DC-powered products. DC-powered products have a nominal operating DC voltage of 48 VDC. Minimal steady state DC operating voltage is 19.2 VDC.

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Replace the Power Supply

Install the DC Power Supply

Procedure

Step 1 Before servicing the power supply, switch off the circuit breaker in your equipment area. As an additional

precaution, tape the circuit-breaker switch in the Off position.

Step 2 Slip on the ESD-preventive wrist strap that was included in the accessory kit.

Step 3 Switch the power supply circuit-breaker switch to the Off (O) position.

Step 4 Pull the terminal block plug connector out of the terminal block head in the power supply.

Step 5 Loosen the captive screw on the DC power supply. See the figure below.

Figure 28: Remove the DC Power Supply

Caution

Do not use the captive installation screw to pull out the power supply.

Step 6 Grasping the power supply handle with one hand, pull the power supply out from the chassis while supporting

it with the other hand.

Step 7 Replace the DC power supply within 5 minutes.

Install the DC Power Supply

Procedure

Step 1 Ensure that the system (earth) ground connection has been made. For ground connection installation instructions,

see the Installing the Chassis Ground Connection section.

Step 2 If present, remove the blank power supply filler plate from the chassis power supply bay opening by loosening

the captive installation screws.

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Replace the Power Supply

Step 3 Verify that power to the DC circuit connected to the power supply you are installing is off. To ensure that

Step 4 Grasp the power supply metal tab with one hand. Place your other hand underneath the power supply. Slide

Remove the AC Power Supply

power has been removed from the DC circuits, locate the circuit breakers for the DC circuits, switch the circuit breakers to the OFF position, and tape the circuit-breaker switches in the OFF position.

the power supply into the power supply bay as shown in the figure below. Make sure that the power supply is fully seated in the bay.

Figure 29: Install the DC Power Supply

Step 5 Tighten the captive installation screw of the power supply. The recommended maximum torque is 5.5

inch-pounds (.62 newton meters).

If you are installing a redundant DC power supply, repeat these steps for the second power source too.

Remove the AC Power Supply

Procedure

Step 1 Disconnect the power cord from the power source. Do not touch the metal prongs on the power cord when it

is still connected to the power supply.

Step 2 Remove the power cord from the power connection on the power supply. Do not touch the metal prongs

embedded in the power supply.

Step 3 Loosen the captive installation screw as shown in the figure below.

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Install the AC Power Supply

Figure 30: Remove the AC Power Supply

Replace the Power Supply

Caution

Do not use the captive installation screw or the power retainer to pull out the power supply.

Step 4 Grasp the AC power supply metal tab with one hand, and slide it part of the way out of the chassis. Place your

other hand underneath the power supply, and slide it completely out of the chassis.

Step 5 Replace the AC power supply within 5 minutes.

Install the AC Power Supply

Procedure

Step 1 Ensure that the system (earth) ground connection has been made. For ground connection installation instructions,

see the Installing the Chassis Ground Connection section.

Step 2 If necessary, remove the blank power supply filler plate from the chassis power supply bay opening, by

loosening the captive installation screws.

Step 3 Grasp the power supply handle with one hand. Place your other hand underneath the power supply, as shown

in the figure below. Slide the power supply into the power supply bay. Make sure that the power supply is fully seated in the bay.

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Replace the Power Supply

Install the AC Power Supply

Figure 31: Install the AC Power Supply

Step 4 Tighten the captive installation screw of the power supply. The recommended maximum torque is 5.5

inch-pounds (.62 newton meters).

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Install the AC Power Supply

Replace the Power Supply

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Troubleshooting Aids

Certain troubleshooting aids of the Cisco ASR 920 Router enable you to perform these tasks that assist the troubleshooting process:

• Verify Pinout, on page 65

• Check Optical Fiber Specifications, on page 69

• Check Alarm Conditions, on page 69

• Check LED Indicators, on page 69

Verify Pinout

Pinouts provide input signal (to the device) and output signal (from the device) information. Bits (BITS) port, GPS Port (1PPS and 10MHz), USB Console (CONSOLE) port, Time-of-Day (TOD) port, Alarm (ALARM) port, USB (USB CON and USB MEM) port, and Management Ethernet (MGMT) port pinout information is provided in the following sections.

BITS Port Pinouts

CHAPTER 7

The following table summarizes the BITS port pinouts.

Table 7: BITS Port Pinouts

Name

InputRX Ring1

DescriptionDirectionSignal

Receive Ring

Receive TipInputRX Tip2

Not used——3

TX RingOutputTX Ring4

TX TipOutputTX Tip5

Not used——6

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GPS Port Pinouts

Troubleshooting Aids

GPS Port Pinouts

The following table summarizes the GPS port pinouts.

Note

The 10 Mhz and 1 PPS interfaces can be configured as input or output using Cisco IOS CLI commands. For more information, see the Cisco ASR 920 Series Aggregation Services Router Configuration Guide.

Table 8: GPS Port Pinout

Waveform

Amplitude

Name

DescriptionDirectionSignal

Not used——7

Not used——8

Input—Sine wave

Output—Sine or square wave

Input— > 1.7 volt p-p (+8 to +10 dBm)

1PPS (input and output)10 Mhz (input and output)

Input—Pulse shape

Output—Pulse shape

Input— > 2.4 volts TTL compatible

Output— > 2.4 volts TTL compatible

Width

Rise Time

Output—5 nanoseconds

Time-of-Day Port Pinouts

The following table summarizes the ToD/1-PPS port pinouts.

Table 9: RJ-45 1PPS/ToD Port Pinouts

Name

1PPS_N3

Output— > 2.4 volts TTL compatible

50 ohms50 ohmsImpedance

26 microseconds50% duty cyclePulse

40 nanosecondsInput—AC coupled

DescriptionDirectionSignal

Do Not ConnectOutputRESERVED1

Do Not ConnectInputRESERVED2

1PPS RS422 signalOutput or

Input

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Troubleshooting Aids

Alarm Port Pinouts

Name

1PPS_P6

TOD_N7

TOD_P8

Alarm Port Pinouts

The following table summarizes the external alarm input pinouts.

Table 10: External Alarm Input Pinouts

DescriptionDirectionSignal

——GND4

——GND5

1PPS RS422 signalOutput or

Input

Time-of-Day characterOutput or

Input

Time-of-Day characterOutput or

Input

DescriptionSignal NamePin

Alarm input 0ALARM0_IN1

Alarm input 1ALARM1_IN2

No connect—3

Alarm input 2ALARM2_IN4

Alarm input 3ALARM3_IN5

No connect—6

No connect—7

COMMON8

Alarm common

Management Ethernet Port Pinouts

The following table summarizes the Management Ethernet port pinouts.

Table 11: Fan Alarm Port Pinout

Signal

Name

TRP0+1

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USB Console Port Pinouts

Signal

Name

TRP0-2

TRP1+3

TRP2+4

TRP2-5

TRP1-6

TRP3+7

TRP3-8

USB Console Port Pinouts

Troubleshooting Aids

The following table summarizes the USB console port pinouts.

Table 12: Single USB Console Port Pinouts

Name

Note

The USB console port +5VDC is input, and operates as an USB peripheral device.

USB MEM Port Pinouts

The following table summarizes the USB MEM port pinouts.

Table 13: Single USB MEM Port Pinouts

DescriptionSignal

+5VDCVccA1

Data -D-A2

Data +D+A3

GroundGndA4

Name

VccA1

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DescriptionSignal

+5VDC (500mA)

Data -D-A2

Page 75

Troubleshooting Aids

Check Optical Fiber Specifications

Name

Note

USB TYPE-A receptacle is used.

Note

The USB MEM port +5VDC is output. Cisco ASR 920 Router provides power for USB MEM port. This port operates as a USB host device.

DescriptionSignal

Data +D+A3

GroundGndA4

Check Optical Fiber Specifications

The specification for optical fiber transmission defines two types of fiber: single mode and multimode. Within the single-mode category, three transmission types are defined: short reach, intermediate reach, and long reach. Within the multimode category, only short reach is available. For information about optical SFP modules, see the documentation for the SFP module at:

http://www.cisco.com/en/US/partner/products/hw/modules/ps5455/prod_installation_guides_list.html .

Check Alarm Conditions

The following table summarizes the meaning of the alarm conditions on the Cisco ASR 920 Router.

Table 14: Alarm Condition Summary

Alarm MeaningAlarm

Type

Critical

Port in down state.

Environmental sensor threshold exceeded critical level (voltage, temperature)

Environmental sensor threshold exceeded major level (voltage, temperature)Major

Port administratively shut down.Info

Check LED Indicators

This section describes the different types of front panel LEDs and their behavior.

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PWR and STAT LEDs

The PWR and STAT LEDs are available on the front panel. These LEDs provide power on the board (PWR) and overall router health (STAT) status. During power up state, these LEDs provide booting status and report errors.

Note

The digital code signing functionality validates the integrity and authenticity of the ROMMON image before booting it.

Table 15: PWR and STAT LED Indications

Troubleshooting Aids

CommentIndicationSTAT LED statePWR LED State

alternatively

OffAmber

AmberFlashing Amber and Green

OffFlashing Amber and Green

RedFlashing Amber and Green

GreenGreen

AmberGreen

Power in the system is all right and FPGA configuration is taking place.

FPGA Image Validation Error.RedAmber

FPGA image.

signing successfully validated FPGA image. Digital code signing passed the control to Microloader to boot ROMMON.

Digital code signing reported failure in ROMMON image validation.

ZTP process has begun.Flashing AmberGreen

IOS-XE image is booting.OffGreen

normally.

free-running mode

Permanent Amber/Off indicates FPGA configuration failure.

System is in unresponsive state. No console messages.

—Upgrade FPGA image error, continuing with Golden

—FPGA configuration successful and Digital code

System is in unresponsive state. No console messages.

Both LEDs turn Green once provisioning is complete.

—Successfully booted and system is operating

—A minor alarm or synchronization is in Holdover or

RedGreen

CPU Management Port LEDs

The LED for the 10/100/1000 Management port is integrated on the connector itself. There are two LEDs in the connector—the LED on the left indicates the Link/Activity status and the LED on the right indicates the duplex status of the link.

Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide

—A major or critical alarm (high temperature reported

for any sensor) or multiple fan failure.

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Troubleshooting Aids

SFP LEDs

Table 16: CPU Management Port LED Indication

IndicationLED StateLED

Link up in 1000 MbpsGreenLeft

Activity in 1000 MbpsBlinking Green

Link up in 100/10 MbpsAmber/Orange

Activity in 100/10 MbpsBlinking Amber/Orange

Link downOff

SFP LEDs

SFP+ LEDs

GreenRight

Each SFP port has an LED indicator. The LED is configured such that the up arrow indicates the port on the upside and the down arrow indicates the port on the downside.

Table 17: SFP Port LED Indication

Link up in full duplex

Link up in half duplexOff

IndicationLED StateLED

Link up in 1000Base-X/100Base-FXGreenLabeled same as the SFP port number

Activity in 1000 Base-X/100Base-FXBlinking

Green

Fault/ErrorYellow

Link downOff

Each SFP+ port has an LED indicator.

Table 18: SFP+ Port LED Indication

Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide

Blinking Green

IndicationLED StateLED

Link up in 10GGreenLabeled same as the SFP port number

Activity in 10G

Fault/ErrorYellow

Link downOff

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RJ-45 LEDs

Troubleshooting Aids

Each RJ-45 port has two LED indicators. Left LED indicates the Link status; right LED indicates the status of the duplex LED.

Table 19: RJ-45 LED Indication

IndicationLED StateLED

Link up in 10/100/1000Base-TGreenLeft

Activity in 10/100/1000Base-TBlinking

Green

Fault/Error/Link downYellow

Administratively downOff

GreenRight

Link up in full duplex

Link up in half duplexOff

Power Supply Unit LEDs

Each power supply unit has a corresponding LED on the front panel.

Table 20: PSU LED Indication

LED

State

IndicationLED

Power Supply is working and 12V output is alright.GreenOK

12V output failure (Either input not present or fault in the power supply unit).Red

System–Interface LED Behavior

Table 21: 1G Copper and 1G SFP LED Indication

1G SFP Port LEDs1G Copper Port LEDs (Link/Duplex)Event

OffOff/OffROMMON

OffOff/OffIOS Shut

YellowYellow/OffIOS No shut (cable disconnect)

OffGreen/GreenIOS No shut (cable connect) (media-type RJ-45)

GreenOff/OffIOS No shut (cable connect) (media-type SFP)

GreenOff/OffIOS No shut (cable connect) (media-type auto)

Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide

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Troubleshooting Aids

System–Interface LED Behavior

Table 22: Management Port LED Indication

Management Port LEDs (Link/Duplex)10G Port LEDsEvent

OffROMMON (cable connect)

Green/Green (1000 Mbps, Full Duplex)

Orange/Green (100/10 Mbps, Full Duplex)

Off/OffOffROMMON (cable disconnect)

Off/OffOffIOS Shut

Off/OffOrangeIOS No shut (cable disconnect)

GreenIOS No shut (cable connect)

Green/Green in 1G mode

Orange/Green in 100/10M mode

Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide

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System–Interface LED Behavior

Troubleshooting Aids

Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide

Cisco ASR-920-20SZ-M Hardware Installation Manual

Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide

CONTENTS

Safety Warnings

Standard Warning Statements

Safety Guidelines for Personal Safety and Equipment Protection

Safety Precautions for Module Installation and Removal

Safety with Electricity

Power Supply Considerations

Power Connection Guidelines

Guidelines for DC-Powered Systems

Guidelines for AC-Powered Systems

Prevent Power Loss

Preventing ESD Damage

Features

Overview

GigabitEthernet Copper Ports

GE SFP Ports

SFP+ Ports

External Interfaces

Network Interfaces

Network Timing Interfaces

External Alarm Inputs

Console

Auxiliary Console

USB Console

USB Memory

Online Insertion and Removal

Power Supply and Fans

Licensing

Prepare for Installation

Site Planning

General Precautions

Site Planning Checklist

Site Selection Guidelines

Airflow for Site Planning

Environmental Requirements

Physical Characteristics

Airflow Guidelines

Airflow Guidelines for ETSI Rack Installation

Floor Loading Considerations

Site Power Guidelines

Electrical Circuit Requirements

Site Cabling Guidelines

Asynchronous Terminal Connections

Interference Considerations

Electromagnetic Interference

Radio Frequency Interference

Lightning and AC Power Fault Interference

Rack-Mounting Guidelines

Precautions for Rack-Mounting

Rack Selection Guidelines

Receive the Device

Unpack and Verify Shipped Contents

Tools and Equipment

Install the Router

Rack Compatibility

Rack Types

Set up Device on Rack or Wall

Rack Mount

Install Rack Brackets

Set up Device on Rack

Attaching the Cable Guides

Wall Mount

Install Wall Brackets

Wall Mount the Device

Ground the Device

Connect Power Cables

Activate an AC Power Supply

Attach Cables to the DC Power Supply

Power On the DC Power Supply

Connect Gigabit Ethernet Ports

Connect SFP Modules

Install SFP Modules

Remove SFP Modules

Connect Fiber Optic SFP Modules

Connect RJ-45 Connector

Connect Chassis to Network

Connecting Console Cables

Connecting to the USB Serial Port Using Microsoft Windows