Cisco 10720 Internet Router Installation and Configuration Guide
Preparing for Installation
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Preparing for Installation

Table Of Contents

Preparing for Installation

Regulatory Compliance and Safety Information

Warnings and Cautions

Safety Guidelines

Maintaining Safety with Electricity

Electrostatic Discharge

Preventing Electrostatic Discharge

Laser Safety

Class 1 Laser Product Warning

General Laser Warning

Class 1 LED Product Warning

Required Tools and Equipment

Rack-Mounting Guidelines

Ventilation Guidelines

Rack-Mounting Clearance Guidelines

Maintenance Guidelines for Multiple Routers in a Rack

Environmental Safety Guidelines

Airflow Guidelines

Temperature and Humidity Guidelines

Power Guidelines

AC-Powered Router

DC-Powered Router

Site Wiring Distance and Interference Guidelines

Electromagnetic Interference

Distance Limitations for Signaling and Unshielded Conductors

Cable Management

Mounting the Router

Cisco IOS Software Configuration

Verifying the Contents in the Box

Site Log Preparation


Preparing for Installation


Installation preparation is presented in the following sections:

Regulatory Compliance and Safety Information

Warnings and Cautions

Required Tools and Equipment

Environmental Safety Guidelines

Cisco IOS Software Configuration

Required Tools and Equipment

Verifying the Contents in the Box

Site Log Preparation

Regulatory Compliance and Safety Information

See the Regulatory Compliance and Safety Information for the Cisco 10720 Internet Router publication, Document Number 78-13077-xx, for complete regulatory compliance and safety information. We recommend you read and understand the safety warnings and guidelines before installing, configuring, or maintaining the router.

Warnings and Cautions

The following sections concern warnings and cautions that accompany the Cisco 10720 Internet router:

Safety Guidelines

Maintaining Safety with Electricity

Electrostatic Discharge

Laser Safety

Ventilation Guidelines

Safety Guidelines

Before you perform any procedures in this publication, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment.

The following guidelines will help to ensure your safety and protect the equipment. This list is not inclusive of all potentially hazardous situations, so be alert.


Note Review the safety warnings listed in the Regulatory Compliance and Safety Information for the Cisco 10720 Internet Router publication (Document Number 78-13077-xx) that accompanied your Cisco 10720 Internet Router before installing, configuring, or maintaining the router.



Warning Only trained and qualified personnel should be allowed to install or replace this equipment. Statement 1030


Never attempt to lift an object that might be too heavy for you to lift by yourself.

Always disconnect the power source and unplug all power cables before lifting, moving, or working on the router.

Keep the work area clear and dust free during and after installation.

Keep tools and router components away from walk areas.

Do not wear loose clothing, jewelry (including rings and chains), or other items that could get caught in the router.

Fasten your tie or scarf and sleeves.

Use and operate the router in accordance with its electrical ratings and product usage instructions.

Do not work alone if potentially hazardous conditions exist.

Always unplug the power cables when performing maintenance or working on the router

Review the following safety compliance guidelines to avoid injuring yourself or damaging the equipment:

Your Cisco 10720 Internet Router should be installed in compliance with national and local electrical codes: in the United States, National Fire Protection Association (NFPA) 70, United States National Electrical Code; in Canada, Canadian Electrical Code, part I, CSA C22.1; in other countries, International Electrotechnical Commission (IEC) 364, part 1 through part 7.

A Cisco 10720 Internet Router configured with an AC-input power supply ships with a three-wire electrical grounding-type plug that will only fit into a grounding-type power outlet. This is a safety feature. The equipment grounding should be in accordance with local and national electrical codes.

A Cisco 10720 Internet Router configured with a dual DC-input power supply requires an external circuit breaker for the DC-input power source. This circuit breaker should protect against short-circuit and overcurrent faults in accordance with United States National Electrical Code NFPA 70 (United States), Canadian Electrical Code, part I, CSA C22.1 (Canada), or IEC 364 (other countries).

A Cisco 10720 Internet Router configured with an AC-input power supply must have the socket-outlet combination installed near the router, and it must be easily accessible at all times. The socket-outlet combination serves as the main disconnecting device.

A Cisco 10720 Internet Router configured with a DC-input power supply must have a readily accessible disconnect device incorporated in the fixed wiring.

Maintaining Safety with Electricity

For information on maintaining safety with electricity, see the "Safety Guidelines" section.

Electrostatic Discharge

Electrostatic discharge (ESD) can damage circuit boards if they are handled improperly. Such mishandling can result in intermittent or complete failures of the board.

When handling circuit boards, observe the following guidelines to prevent ESD damage:

Always use an antistatic wrist strap and ensure that the strap makes adequate contact with your skin.

Attach an ESD-preventive strap to your wrist, and to the chassis or to a bare metal surface. (See Figure 2-1.)

The wrist strap protects equipment from ESD voltages on the body only; ESD voltages on clothing can still cause damage to electronic components.


Caution For safety, periodically check the resistance value of the ESD-preventive wrist strap. The resistance measurement should be between 1 and 10 megohms (Mohms).

Preventing Electrostatic Discharge

Electrostatic discharge (ESD) damage can occur when electronic cards or components are improperly handled. ESD can cause complete or intermittent failures. We recommend using an antistatic strap when you handle a router or one of its components.

Electromagnetic interference (EMI) shielding is an integral component of the router.

Following are guidelines for preventing ESD damage:

Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact. Connect the equipment end of the connection cord to bare metal on the router chassis. (See Figure 2-1.)

Figure 2-1 Attaching an ESD-Preventive Strap

When installing an uplink or access card, confirm that the card is fully seated in the midplane and tighten the spring-loaded screws. These screws prevent accidental removal, provide proper grounding for the system, and help ensure that the connectors are seated in the midplane.

See the "Removing and Installing an Uplink Card" section on page 5-49 and "Removing and Installing an Access Card" section on page 5-58.

When removing an uplink or access card, use the spring-loaded screws to unseat the card connector from the midplane.

See the "Removing and Installing an Uplink Card" section on page 5-49 and "Removing and Installing an Access Card" section on page 5-58.

Handle cards by the spring-loaded screws only; avoid touching the board or connector pins.

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

Avoid contact between the card and clothing. The wrist strap protects the board only from ESD voltages on the body; ESD voltages on clothing can still cause damage.

Laser Safety

The uplink card is equipped with a Class 1 laser that emits invisible radiation. Do not stare into open line card ports. The following laser warnings apply to the Cisco 10720 Internet Router:

Class 1 Laser Product Warning


Warning Class 1 laser product. Statement 1008


General Laser Warning


Warning Avoid exposure to laser radiation. Do not stare into an open aperture, because invisible laser radiation may be emitted from the aperture when a cable is not inserted in the port. Statement 125


For translated Class 1 laser warnings, refer to the Regulatory Compliance and Safety Information for the Cisco 10720 Internet Router publication.

Class 1 LED Product Warning


Warning Class 1 LED product. Statement 1027


Required Tools and Equipment

The following tools and equipment are required to install the Cisco 10720 Internet Router:

ESD-preventive wrist strap

Number 1 Phillips screwdriver

1/8-inch flat-blade screwdriver

Antistatic mat (optional)

Antistatic bag

Cable ties

Wire stripper

Rack-Mounting Guidelines

Before installing the Cisco 10720 Internet Router in a 19-inch EIA, 23- or 24-inch EIA, or ETSI equipment rack, consider the general rack-mounting guidelines presented in the following sections:

Ventilation Guidelines

Rack-Mounting Clearance Guidelines

Maintenance Guidelines for Multiple Routers in a Rack

Ventilation Guidelines


Caution The fan assembly is located in the back of the router chassis. Air flow in the front and back of the router should not be blocked.

Use these guidelines to provide adequate ventilation for the Cisco 10720 Internet Router:

Install the chassis in an enclosed rack only if the rack has adequate ventilation or an exhaust fan; use an open rack when possible.

A ventilation system that is too powerful in an enclosed rack can also prevent cooling by creating negative air pressure around the router and redirecting the air away from the air intake vent. If necessary, operate the router with the rack door open or in an open rack.

Make sure that the air baffle located between the fan assembly and power supply is properly seated to assist in cooling the router.

Check equipment located near the bottom of the rack, because it can generate excessive heat that is drawn upward and into the intake ports of equipment above, possibly leading to overheating.

Rack-Mounting Clearance Guidelines

The rack-mounting hardware included with the Cisco 10720 Internet Router is suitable for most 19-inch EIA, 23- or 24-inch EIA, or ETSI equipment racks or Telco-style racks.

The following are rack-mounting guidelines for the Cisco 10720 Internet Router:

If you use a Telco-style rack, be sure that the rack is bolted to the floor, the router mounts to the two rack posts, and the rest of the router is cantilevered off the posts.

Some Telco-style racks are secured to ceiling brackets, if necessary, because of the weight of the equipment in the rack. Make sure that the rack on which you are installing the Cisco 10720 Internet Router is secured.


Note Warm air exhausts out the back side of the router by drawing cool air in through vents located on the front of the router chassis. Allow sufficient airflow by maintaining 6 inches (15.24 cm) of clearance at both the inlet and exhaust openings on the router and 0.75 inch (1.9 cm) on each side of the router chassis.


Maintenance Guidelines for Multiple Routers in a Rack

The Cisco 10720 Internet Router is 17.50 inches (44.45 cm) wide by 3.45 inches (8.76 cm) high by
18.25 inches (46.36 cm) deep. The height is equivalent to two rack units (RU). The router is 21.80 inches (55.37 cm) deep when the cable-management tray is installed. When placing multiple routers in a rack, ensure that there is sufficient ventilation to accommodate the routers.

The heated exhaust air from other equipment can enter the inlet air vents and cause overheating inside the router. To avoid this, follow these guidelines:

Install and use the cable-management system included with the router to keep cables organized and out of the way of the cards and power supply.

Ensure that cables from other equipment do not interfere with access to the cards and LEDs located in the front of the router.

When mounting the router in a rack, be sure to use all the screws provided to secure the router to the rack posts.

Figure 2-2 Cisco 10720 Internet Router Outer Dimensions (Top View)

Environmental Safety Guidelines

This section offers guidelines for operating your Cisco 10720 Internet Router in various environments:

Airflow Guidelines

Temperature and Humidity Guidelines

Power Guidelines

Site Wiring Distance and Interference Guidelines

Cable Management

Mounting the Router

Airflow Guidelines

The Cisco 10720 Internet Router air circulation system consists of four fans installed in the back of the router chassis. The fan assembly maintains acceptable operating temperatures for the internal components by drawing cooling air in through vents located on the front of the router chassis, circulating the air through the router, and exhausting the air out of the back of the router chassis.

Observe the following guidelines when selecting a site at which to install the Cisco 10720 Internet Router:


Note Warm air exhausts out the back side of the router by drawing cool air in through vents located on the front of the router chassis. Allow sufficient air flow by maintaining 6 inches (15.24 cm) of clearance at both the inlet and exhaust openings on the router and 0.75 inch (19.1 mm) on each side of the router chassis.


The site should be as dust-free as possible.

Under extreme environment conditions, the environmental monitoring system will shut down the power to protect the system components.

Temperature and Humidity Guidelines

The operating environmental site requirements are located in Appendix A, "Technical Specifications." The temperature and humidity ranges listed are those within which the router will continue to operate. You can maintain normal operation by anticipating and correcting environmental irregularities before they approach critical values.

The environmental monitoring functionality built into the router protects the system and its components from potential damage from overvoltage and overtemperature conditions.

To assure normal operation and avoid maintenance difficulty, plan and prepare your site before installing the router.

Power Guidelines


Caution Read the installation instructions before you connect the router to its power source.

The Cisco 10720 Internet Router requires a 120/220 VAC or -48 VDC dual power supply. Site requirements differ depending on the type of source voltage. We recommend you follow these precautions and recommendations when planning power connections to your router:

Check the power at your site before installation and periodically after installation to ensure that you are receiving clean power. Install a power conditioner if necessary.

Install proper grounding, or use the proper grounding receptacle to avoid damage from lightning and power surges.

Read the safety warnings before you connect the AC or DC power supply to the electrical power at the local or remote site.

AC-Powered Router

The AC dual power supply includes two terminal blocks for power redundancy. (See Figure 1-6.) The grounding screw is located in the terminal block.

The following guidelines will help to ensure your safety and protect the equipment. This list does not include every potentially hazardous situation, so be alert.

Install an uninterruptable power source where possible.

Install proper grounding to avoid damage from lightning and power surges.

See the "Safety Guidelines" section for additional information. See Figure 2-3 for an example of a typical AC power cord.

Figure 2-3 AC Power Cord

DC-Powered Router

The DC dual power supply includes two terminal blocks for power redundancy. (See Figure 1-7.)

The minimum wire gauge size supported on the DC dual power supply is 17 American Wire Gauge (AWG), which has a 1.5mm wire diameter. The maximum wire gauge size supported on the DC dual power supply is 10 AWG, which has a 6mm wire diameter.

Wires that are installed in the router power source come from two other external DC power sources. If the DC power source on Bus B fails, Bus A will continue to power the generator.

The following guidelines will help to ensure safety and protect the equipment. This list does not include every potentially hazardous situation, so be alert.

A Cisco 10720 Internet Router configured with the dual DC-input power supply should have a readily accessible disconnect device incorporated for fixed wiring.

See the "Safety Guidelines" section for additional information.


Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms (Mohms).


Warning A readily accessible two-pole disconnect device must be incorporated in the fixed wiring. Statement 91


Site Wiring Distance and Interference Guidelines

This section offers site wiring guidelines for setting up the site plant wiring and cabling. When planning the location of the new system, consider the following:

Electromagnetic Interference

Distance Limitations for Signaling and Unshielded Conductors

Electromagnetic Interference

Electromagnetic interference (EMI) can occur between the field and the signals on the wires when the wires are run for any significant distance. This fact has two implications for the construction of plant wiring:

Poor wiring practice can result in radio interference emanating from the plant wiring.

Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy and/or cause interference with the signal drivers and receivers in the router, and can create an electrical hazard by conducting power surges through lines and into equipment.


Note To predict and remedy strong EMI, consult experts in radio frequency interference (RFI).


A good quality twisted pair cable or shielded twisted pair cable helps limit radiation and noise induced into the cable, minimizing the potential for the following:

Radio interference

Interference with the data transmission

Distance Limitations for Signaling and Unshielded Conductors

You must give special consideration to the effect of a lightning strike in the site vicinity if wires exceed recommended distances, or if wires pass between buildings. The electromagnetic pulse (EMP) caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices.

You must provide a properly grounded and shielded environment. Consider electrical surge suppression issues by addressing the following items:

Potential surge sources

Distance


Caution Splicing can degrade cable performance.

Cable Management

The cable-management system, located on the front of the router, organizes the interface cables. The cable-management system consists of the following components:

Cable-management tray for managing cables

Cable-management cover to keep cables from being accidentally stressed

Before mounting the router or connecting the ports on an uplink card or access card, install the cable-management tray. For more information, see the "Installing the Cable-Management System" section on page 5-70.

Mounting the Router

Rack mount brackets are available for 19-inch EIA, 23-inch EIA, or 24-inch EIA, and ETSI racks. Wall-mount brackets and desktop mounts are also available options. For more information about mounting the Cisco 10720 Internet Router, see the "Rack-Mounting the Router" section on page 3-2.

Cisco IOS Software Configuration

The Cisco IOS software that runs on your router contains extensive features and functionality.

For Cisco IOS software configuration information and support, refer to the configuration and command reference publications in the Cisco IOS software configuration documentation set that corresponds to the Cisco IOS software release installed on your Cisco hardware. You can also refer to the Cisco IOS software release notes for the version of Cisco IOS software you are using on your router.

For a list of these documents, see "Related Documentation" section on page xix.

Verifying the Contents in the Box

Check the contents of the shipping packaging and verify that the following are included with your shipment:

One Cisco 10720 Internet Router fully assembled that includes the following:

1 uplink card

1 access card

1 AC or DC dual power supply

1 main board

1 midplane board

1 fan assembly containing 4 fans

1 air baffle located between power supply and fan number 4

One accessory kit that includes the following:

19-inch EIA rack-mount brackets (quantity 2)

23- to 24-inch EIA rack-mount brackets (quantity 2)

ETSI rack-mount brackets (quantity 2)

Wall-mount brackets (quantity 2)

Rubber foot pads for desk mounting (quantity 4)

Cable-management system (quantity 1 cable-management tray and 1 cable-management cover)

AC power cable (quantity 2)

Metal AC bracket clips (quantity 2)

Screws (quantity 22)

Ground lug (quantity 1)

Lug-mounting 6.3 mm (M5) screws (quantity 2)

Cisco 10720 Internet Router Unpacking Instructions

Regulatory Compliance and Safety Information for the Cisco 10720 Internet Router

Obtaining Documentation for the Cisco 10720 Internet Router

If you do not receive everything you ordered, contact a customer service representative for assistance.

Site Log Preparation

Table 2-1 shows a sample site log. Make copies of the sample or design your own site log. The site log lets you record operation and maintenance activity. Keep the site log in an accessible place near the router.

Site log entries might include the following:

Installation progress—Make entries in the site log to record installation progress. Log any difficulties encountered and remedies during the installation process for future reference.

Upgrades and removal/replacement procedures—Use the site log as a record of system maintenance and expansion history.

Each time a procedure is performed on the system, update the site log to record the following:

Field-replaceable hardware installed, removed, or replaced

Router configuration changes

Software upgrades

Corrective or preventive maintenance procedures performed

Intermittent problems

Your comments

Table 2-1 Site Log for the Cisco 10720 Internet Router

Device Identification:
Date
Description of Action Performed or Symptom Observed
Initials