Cisco Systems UBR7225VXR specifications Site Preparation Checklist, Task Verified By Date

Page 49

Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation

Site Preparation Checklist

Install and use the cable-management bracket included with the Cisco uBR7225VXR rack-mount kit to keep cables organized. Consider the equipment and cabling that is already installed in the rack. Ensure that cables from other equipment will not impair access to the interface slots, or require you to disconnect cables unnecessarily to perform equipment maintenance or upgrades.

In addition to the preceding guidelines, review the precautions for avoiding overtemperature conditions in the “Site Environment” section on page 2-5. To properly install the Cisco uBR7225VXR router chassis in a rack, refer to the instructions in the “Cisco uBR7225VXR Router Chassis Rack-Mounting Options” section on page 3-2.

Caution Do not install the Cisco uBR7225VXR chassis in an enclosed rack or room that is not properly ventilated or air-conditioned. The Cisco uBR7225VXR chassis overheats if the input air temperature reaches 105oF (41oC).

Site Preparation Checklist

Before installing the Cisco uBR7225VXR router, assemble the equipment needed to support your network configuration and subscriber service offering. Ensure all power and cabling requirements are met based on the equipment to be installed. Also ensure that environmental conditions are met to maintain proper equipment operation.

Table 2-2is a checklist that identifies the key tasks to complete.

Table 2-2 Site Preparation Checklist

 

Task

Verified By

Date

 

 

 

 

 

 

 

 

 

 

General:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Safety recommendations and guidelines reviewed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Required general CMTS preparations completed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Site power voltages verified.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Site environmental specifications verified.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Downstream and upstream channel plans created.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cable plant balanced, swept and verified to comply with DOCSIS or EuroDOCSIS

 

 

 

 

 

 

 

recommendations.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Optical receivers adjusted for proper upstream RF output levels.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Required passwords, IP addresses, device names available.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

All additional CMTS equipment to support Internet access services, RF-related

 

 

 

 

 

 

 

equipment, servers and other host computers, a Cisco uBR900 series cable access router,

 

 

 

 

 

 

 

and console accessory kit to test operation of your network available.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Required tools and cables available.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Telco Return Configurations:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Telco return dial-up plan created.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Network access server installed and configured.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Telephone circuits, connections, and all equipment to support telco return available.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IP Telephony Configurations:

 

 

 

 

 

 

 

 

 

 

 

 

Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

OL-17309-02

 

 

 

2-17

 

 

 

 

 

 

 

Image 49
Contents Text Part Number OL-17309-02 Americas HeadquartersPage N T E N T S AC Power Measuring the Downstream RF Signal at the Upconverter Output Maintaining the Cisco uBR7225VXR Router Coaxial Cables C-1 Viii Document Revision History PrefaceDocument Objectives Revision Date Change SummaryDocument Organization AudienceChapter Title Description Appendix G, Site Log Document ConventionsObtaining Documentation and Submitting a Service Request Cisco uBR7225VXR Universal Broadband Router Cisco uBR7225VXR OverviewOL-17309-02 Cable interface line card slot Cisco uBR7225VXR Router ChassisCard Slot and Logical Interface Numbering Cisco uBR7225VXR Network Interface OverviewCisco uBR7255VXR Chassis and Cable Interface Line Cards MAC-Layer AddressBasic Internet Access Services Supported System Configurations OverviewTwo-Way HFC Cable Network Example IP Telephony Services VPN ServicesHFC Telco ReturnNetwork Processing Engine Hardware Component DescriptionsNPE Comparisons Cisco Cable Interface Line Cards Power Supplies Fan Trays Cisco uBR7225VXR AC-Input Power SupplyCisco uBR7225VXR Fan Tray Internal Airflow-Top View Subchassis and Midplane Cisco uBR7225VXR ChassisTop Back CompactFlash DiskCisco uBR7225VXR Overview Hardware Component Descriptions OL-17309-02 Safety Recommendations InstallationLifting the Cisco uBR7225VXR Router Safely Lifting the Chassis Cisco uBR7246 Router Shown Safety with ElectricityPreventing Electrostatic Discharge Damage Site Requirements AC PowerSite Environment General Precautions Site Configuration Maintaining Normal OperationSpecification Minimum Maximum Required Network Information Power ConsiderationsBefore You Begin Rack-Mount and Cable-Management Kit Installation ToolsShipping Container Contents Equipment Required to Verify Your Plant’s RF SetupTwo-Way Data and VoIP Provisioning the Cable HeadendDiplex Filters Headend CertificationReceivers DHCP, DNS, TFTP, and TD Servers Dial-Up/Remote Access ServersVoIP Gateways and Gatekeepers Authentication, Authorization, and Accounting ServersVoIP Sgcp Pass-Through Interference Considerations Headend WiringEquipment Racks 17.32 23.875 21.875 Task Verified By Date Site Preparation ChecklistTask Verified By Date Component ChecklistsCisco uBR7225VXR Router Installation Checklist Installing the Cisco uBR7225VXR RouterCisco uBR7225VXR Router Chassis Rack-Mounting Options Typical 4-Post Equipment Rack Posts and Mounting Strips Rack-mount bracket Cable-Management Bracket Requirements Installing the Chassis in a Telco-Type RackRack-mount bracket Cable-management bracket Installing Rack-Mount Brackets on the Rear of the Chassis Installing the Brackets on the ChassisInstalling 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 OL-17309-02 OL-17309-02 Cabling Console and Auxiliary Port Connection Equipment Connecting Cable Interface Line Card CablesAuxiliary Port Signals Console Port SignalsPin Signal Direction Description Protective Grounding Connecting PowerConnecting to the AC-Input Power Supply 14 Connecting AC-Input Power Powering On the Cisco uBR7225VXR RouterConfiguring the Interfaces OL-17309-02 Connecting the Cisco uBR7225VXR Router to the Cable Headend Two-Way Data Headend Architecture RF and Digital Data Overview One-Way Data Headend ArchitectureMeasuring the Downstream RF Signal Connecting and Configuring the DownstreamInstalling and Configuring the Upconverter Page Viewing the Downstream if Signal on a Spectrum Analyzer Measuring the Downstream RF Signal at the Upconverter Output Overloaded Spectrum Analyzer Input Page OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 OL-17309-02 Connecting the Upstream to the Optical Receiver Connecting and Configuring the UpstreamDocsis Specification Channel Bandwidth Cisco MC11 Fpga30 km Fiber node Milliwatt Measure +10 dBmV at this point Testing the Upstream ConfigurationOptical receiver Downstream Optical +10 dBmV Receiver +13 dBmV Attenuator Measuring the Upstream RF Signal Using a Spectrum Analyzer Measuring the Upstream RF SignalOL-17309-02 OL-17309-02 29 Analyzing the Upstream RF Signal-64-Byte Data Packets Analyzing the Upstream RF Signal30 Analyzing the Upstream RF Signal-1500-Byte Data Packets OL-17309-02 Center Frequency Minimum Resolution Using the Zero-Span Method with Adjacent Upstream ChannelsSymbol Rate +/-1/2 Symbol Rate Bandwidth OL-17309-02 35 Vector Signal Analyzer Plot of Upstream Data Burst OL-17309-02 OL-17309-02 OL-17309-02 39 Preamble Amplitude Before Center Frequency Adjustment 41 Original Preamble Viewed with Accelerated Sweep Time OL-17309-02 Connecting the Cisco uBR7225VXR Router to the Cable Headend OL-17309-02 Connecting the Cisco uBR7225VXR Router to the Cable Headend Configuring the Digital Signal OL-17309-02 OL-17309-02 Online Insertion and Removal Maintaining the Cisco uBR7225VXR RouterEnvironmental Monitoring Environmental Monitoring and Reporting FunctionsParameter High Warning High Critical Shutdown Reporting FunctionsRouter# show environment Temperature ranges and values are subject to change Fan Failures Overview TroubleshootingProviding Information Troubleshooting Problem Solving with Subsystems Problem Solving with SubsystemsIdentifying Startup Problems Cooling Subsystem Power SubsystemProcessor Subsystem Troubleshooting the Network Processing EngineTroubleshooting Cable Interface Line Cards Other Troubleshooting Information Websites Verifying the Downstream SignalTroubleshooting Verifying the Downstream Signal Description Specification Cisco uBR7225VXR Router SpecificationsBroadband Routers at the following URL Channel Symbol Rate Raw Data Rate Nominal Data RF SpecificationsBandwidth, MHz Msym/sec Mbps Rate, Mbps Channel Qpsk RawDownstream RF Channel Transmission Characteristics Docsis 1.0 Transmission CharacteristicsParameter Value Upstream RF Channel Transmission Characteristics Docsis 1.1 Transmission Characteristics EuroDOCSIS Transmission Characteristics Downstream RF Channel Transmission Characteristics Upstream RF Channel Transmission Characteristics Electrical Input and Output Parameter Value OL-17309-02 Coaxial Cables Cable SpecificationsIdentifying an RJ-45 Rollover Cable Console and Auxiliary Port Cables and PinoutsRJ-45-to-DB-9 Console Port Cables and PinoutsAuxiliary Port Cables and Pinouts Fast Ethernet Port Cables and PinoutsIdentifying an RJ-45 Crossover Cable RJ-45 Pin Identifying an RJ-45 Straight-Through CableRJ-45 Pin Description Figure C-5 Duplex SC Cable Connector Fiber-Optic Cables and ConnectorsAbout Wiring Standards Industry-Standard Wiring PlansTIA/EIA Standards Information Optical Fiber Color CodesPosition Color Pair Number Wire Number Solid Color Stripe Color Pin Number Telephone Wire Color CodesPair Number Wire Number Solid Color Stripe Color Pin Number White Blue Green Red Orange Black Yellow Pair Number Wire Number Solid Color Stripe ColorOL-17309-02 Http//developer.apple.com Http//atxnetworks.com Frequency Allocation TablesB1, G D1, K Standards ComparisonsNtsc Cable Television Channels and Relative Frequencies Freq MHz Carrier Visual Aural Table E-4 Freq MHz Carrier Visual Aural Table E-4 Ntsc M Cable Television Frequencies for Japan Table E-5 Japanese Channel Assignments Bandwidth Visual Carrier Aural Carrier PAL/SECAM Cable Television Channels and Relative FrequenciesChannel Channel Bandwidth Visual Carrier Aural Carrier Number MHz Table E-6 OL-17309-02 North American Channel Plans Manufacturers for Headend Provisioning RequirementsManufacturer Website or Phone Number Products/Model Agilent Agilent 89411A European Channel Plans Agilent Agilent 8591C Tektronix 2715 Sunrise Telecom AT2000R Site Log Initials Symbols GL-2 GL-3 GL-4 GL-5 GL-6 D E IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8
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