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Cisco Systems UBR7225VXR Installation Tools, Rack-Mount and Cable-Management Kit

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Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide

OL-17309-02

Chapter2 Preparing the Cisco uBR7225VXR Router for Installation

Installation Tools

•IP addresses and subnet masks, if you are routing IP.

•Dial-up access telephone numbers, usernames, and passwords for telco return operation.

•RADIUS security and accounting configuration.

•Gateway and gatekeeper zone configuration for your H.323 VoIP network.

•Gateway and call-agent configuration for your SGCP VoIP network.

•Zone names, network numbers, or node numbers for the new interfaces, if required.

•Operating speeds for specific interfaces—For example, serial interfaces operate at speeds of up to

2 Mbps. The speed of an interface often depends on the speed of the remote device to which it is

attached.

Installation Tools

Your Cisco uBR7225VXR universal broadband router chassis is fully assembled at the factory; no

assembly is required. However you will need the following tools and equipment to install the chassis and

the rack-mount and cable-management kit:

•Number 2 Phillips screwdriver

•3/16-inch flat-blade screwdriver

•7/16-inch flat-blade screwdriver

•7/16-inch torque wrench for connecting coaxial cables to the cable F-connectors on the

cable interface line cards—Recommended torque is 20 inch-pounds (optional)

•Tape measure (optional)

•Level (optional)

Rack-Mount and Cable-Management Kit

The rack-mount and cable-management kit includes the following parts:

•Two rack-mount brackets for mounting the chassis in the rack.

•Cable-management bracket to relieve the strain on installed cableinterface line card interface

cables.

•Eight M4 x 6-mm Phillips flathead screws to secure the rack-mount brackets to the chassis.

•Four M3 x 6-mm Phillips panhead screws to secure the cable-management bracket to the chassis.

•Four 10/32 x 3/8-inch slotted binderhead screws to secure the rack-mount brackets to the rack rails.

For more information on the rack-mount brackets and cable-management bracket, refer to the

“Cisco uBR7225VXR Router Chassis Rack-Mounting Options” section on page3-2.

Contents

Main Page CONTENTS Page Page Page Page Page Preface Document Revision History Document Objectives Audience Document Organization Document Conventions Warning Definition Obtaining Documentation and Submitting a Service Request Cisco uBR7225VXR Overview Cisco uBR7225VXR Universal Broadband Router Page Cisco uBR7225VXR Router Chassis Cisco uBR7225VXR Network Interface Overview Card Slot and Logical Interface Numbering 1 2 3 4 5 8 7 6 MAC-Layer Address Supported System Configurations Overview Basic Internet Access Services Page VPN Services IP Telephony Services Telco Return Hardware Component Descriptions Network Processing Engine NPE Comparisons Cisco Cable Interface Line Cards Power Supplies Fan Trays Page Page Cisco uBR7225VXR Chassis Subchassis and Midplane Cisco uBR7225VXR Subchassis CompactFlash Disk Page Page Preparing the Cisco uBR7225VXR Router for Installation Safety Recommendations Lifting the Cisco uBR7225VXR Router Safely Safety with Electricity Preventing Electrostatic Discharge Damage Site Requirements AC Power Site Environment Site Configuration: Maintaining Normal Operation General Precautions Power Considerations Required Network Information Before You Begin Installation Tools Rack-Mount and Cable-Management Kit Equipment Required to Verify Your Plants RF Setup Shipping Container Contents Verifying the Shipping Container Contents Provisioning the Cable Headend Two-Way Data and VoIP Headend Certification Diplex Filters Receivers DHCP, DNS, TFTP, and TD Servers Telco Return Dial-Up/Remote Access Servers RADIUS Dial Security Servers Authentication, Authorization, and Accounting Servers VoIP Gateways and Gatekeepers VoIP SGCP Pass-Through Headend Wiring Interference Considerations Distance Limitations and Interface Specifications Equipment Racks Page Site Preparation Checklist Component Checklists Installing the Cisco uBR7225VXR Router Cisco uBR7225VXR Router Installation Checklist Cisco uBR7225VXR Router Chassis Rack-Mounting Options Page Page Cable-Management Bracket Requirements Page Installing the Brackets on the Chassis Installing Rack-Mount Brackets on the Rear of the Chassis Installing Rack-Mount Brackets on the Front of the Chassis Installing Rack-Mount Brackets in the Middle of the Chassis Installing the Chassis in the Rack Page Installing the Chassis in a Workbench or Tabletop Environment Cabling Connecting Cable Interface Line Card Cables Console and Auxiliary Port Connection Equipment Console Port Signals Auxiliary Port Signals Protective Grounding Connecting Power Connecting to the AC-Input Power Supply Powering On the Cisco uBR7225VXR Router Configuring the Interfaces Page Connecting the Cisco uBR7225VXR Router to the Cable Headend 4-2 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide Two-Way Data Headend Architecture Figure4-1 Typical Cable Headend Configuration for Two-Way Data uBR7225VXR One-Way Data Headend Architecture RF and Digital Data Overview Connecting and Configuring the Downstream Installing and Configuring the Upconverter Measuring the Downstream RF Signal Measuring the Downstream RF Signal Using the Channel Power Option on a Spectrum Analyzer Measuring the Downstream IF Signal at the Cisco uBR7225VXR Router Page Measuring the Downstream RF Signal at the Upconverter Output Page Page Page Measuring the Downstream RF Signal Using CATV Mode on a Spectrum Analyzer Measuring the Downstream IF Signal at the Cisco uBR7225VXR Router Using CATV Mode Page Page Measuring the Downstream RF Signal at the Upconverter Output Using CATV Mode Page Page Page Connecting and Configuring the Upstream Connecting the Upstream to the Optical Receiver 4-19 Figure4-22 Connecting and Configuring the Upstream Figure4-23 The X-level Test Point Testing the Upstream Configuration 4-20 Diplex filter Figure4-24 Calibrating Multiple X-level Test Points Connected to One Upstream Port Cable modem LH C 4-21 Figure4-25 Calibrating Multiple X-level Test Points Connected to Multiple Upstream Ports Measuring the Upstream RF Signal Measuring the Upstream RF Signal Using a Spectrum Analyzer Page Page Analyzing the Upstream RF Signal Page Page Using the Zero-Span Method with Adjacent Upstream Channels Page Page Page Page Page Page Page Page Measuring the RF Signal at the Forward Test Point on a Laser Transmitter Page Page Configuring the Digital Signal Page Page Maintaining the Cisco uBR7225VXR Router Online Insertion and Removal Environmental Monitoring and Reporting Functions Environmental Monitoring Reporting Functions Page Page Fan Failures Troubleshooting Overview Providing Information 6-2 Chapter6 Troubleshooting Problem Solving with Subsystems Problem Solving with Subsystems Tip Isolating a problem to a specific subsystem simplifies the troubleshooting process. be operating whenever system power is on. Processor subsystemIncludes the network processing engine and cable interface line cards. Identifying Startup Problems Power Subsystem Cooling Subsystem Processor Subsystem Troubleshooting the Network Processing Engine Troubleshooting Cable Interface Line Cards Other Troubleshooting Information Websites Verifying the Downstream Signal Page A Cisco uBR7225VXR Router Specifications Cisco uBR7225VXR Physical and System Specifications Page B RF Specifications DOCSIS 1.0 Transmission Characteristics Page DOCSIS 1.1 Transmission Characteristics EuroDOCSIS Transmission Characteristics Page Page Electrical Input and Output Page Page C Cable Specifications Coaxial Cables Console and Auxiliary Port Cables and Pinouts Identifying an RJ-45 Rollover Cable Console Port Cables and Pinouts Auxiliary Port Cables and Pinouts Fast Ethernet Port Cables and Pinouts Identifying an RJ-45 Crossover Cable Identifying an RJ-45 Straight-Through Cable Fiber-Optic Cables and Connectors D Industry-Standard Wiring Plans About Wiring Standards TIA/EIA Standards Information Optical Fiber Color Codes Telephone Wire Color Codes Page Page Page E Frequency Allocation Tables Standards Comparisons NTSC Cable Television Channels and Relative Frequencies Page Page Page Page NTSC (M) Cable Television Frequencies for Japan Page PAL/SECAM Cable Television Channels and Relative Frequencies Page Page Page Page F Manufacturers for Headend Provisioning Requirements North American Channel Plans Page European Channel Plans Page G Site Log Page GLOSSARY Symbols A B C D E F G H I M N O P Q R T U V X INDEX A B C D E F G H I J K L M N Q R S T U V W X Z