Cisco Systems UBR7225VXR specifications OL-17309-02

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Chapter 3 Installing the Cisco uBR7225VXR Router

Installing the Chassis in a Workbench or Tabletop Environment

Step 6 Insert the 10/32 x 3/8 slotted screws (two to a side) through the brackets and into the mounting strip (use the top and bottom bracket holes, shown in Figure 3-2 on page 3-4, Figure 3-3 on page 3-4, Figure 3-4 on page 3-5, and Figure 3-5 on page 3-5). Using a 7/16-inch flat-blade screwdriver, tighten all the screws.

This completes the procedure for installing the chassis in the rack. Proceed to the “Cabling” section on page 3-13to continue the installation.

Installing the Chassis in a Workbench or Tabletop Environment

The Cisco uBR7225VXR universal broadband router should already be in the area where you will install it, and your installation location should already be determined. If not, refer to the “Site Requirements” section on page 2-5.

When installing the router on a workbench or tabletop, ensure that the surface is clean and in a safe location and that you have considered the following:

The Cisco uBR7225VXR router requires at least 3 inches (7.72 cm) of clearance at the inlet and exhaust vents (the right and left sides of the router).

The Cisco uBR7225VXR router should be installed off the floor. (Dust that accumulates on the floor can be drawn into the interior of the router by the cooling fans. Excessive dust inside the router can cause overtemperature conditions and component failures.)

There must be approximately 23.25 inches (59.06 cm) of clearance at the front, and 19 inches (48.3 cm) at the back of the Cisco uBR7225VXR router for installing and replacing field-replaceable units (FRUs), or accessing network cables or equipment.

Make sure that blank cable interface line card and blank power supply filler plates are installed in empty slots.

The Cisco uBR7225VXR router will receive adequate ventilation (it is being installed in an enclosed cabinet where ventilation is adequate).

If you plan to install the cable-management bracket on the front of the chassis, set aside the cable-management bracket and the four M3 x 6-mm Phillips panhead screws.

Warning Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. Statement 48

Complete the following steps to install the Cisco uBR7225VXR router on a workbench or tabletop:

Step 1 Remove any debris and dust from the tabletop or workbench, and the surrounding area. Also make sure that your path between the router and its new location is unobstructed.

Step 2 On the chassis, ensure that all captive installation screws on the network processing engine, cable interface line cards, and each power supply are tightened.

Warning Two people are required to lift the chassis. To prevent injury, keep your back straight and lift with your legs, not your back. Statement 164

 

Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide

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OL-17309-02

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Contents Americas Headquarters Text Part Number OL-17309-02Page 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 Objectives PrefaceDocument Revision History Revision Date Change SummaryChapter Title Description AudienceDocument Organization Document Conventions Appendix G, Site LogObtaining Documentation and Submitting a Service Request Cisco uBR7225VXR Overview Cisco uBR7225VXR Universal Broadband RouterOL-17309-02 Cisco uBR7225VXR Router Chassis Cable interface line card slotCisco uBR7225VXR Network Interface Overview Card Slot and Logical Interface NumberingMAC-Layer Address Cisco uBR7255VXR Chassis and Cable Interface Line CardsSupported System Configurations Overview Basic Internet Access ServicesTwo-Way HFC Cable Network Example VPN Services IP Telephony ServicesTelco Return HFCHardware Component Descriptions Network Processing EngineNPE Comparisons Cisco Cable Interface Line Cards Power Supplies Cisco uBR7225VXR AC-Input Power Supply Fan TraysCisco uBR7225VXR Fan Tray Internal Airflow-Top View Cisco uBR7225VXR Chassis Subchassis and MidplaneCompactFlash Disk Top BackCisco uBR7225VXR Overview Hardware Component Descriptions OL-17309-02 Installation Safety RecommendationsLifting the Cisco uBR7225VXR Router Safely Safety with Electricity Lifting the Chassis Cisco uBR7246 Router ShownPreventing Electrostatic Discharge Damage Site Environment AC PowerSite Requirements Specification Minimum Maximum Site Configuration Maintaining Normal OperationGeneral Precautions Before You Begin Power ConsiderationsRequired Network Information Installation Tools Rack-Mount and Cable-Management KitEquipment Required to Verify Your Plant’s RF Setup Shipping Container ContentsProvisioning the Cable Headend Two-Way Data and VoIPReceivers Headend CertificationDiplex Filters Dial-Up/Remote Access Servers DHCP, DNS, TFTP, and TD ServersVoIP Sgcp Pass-Through Authentication, Authorization, and Accounting ServersVoIP Gateways and Gatekeepers Headend Wiring Interference ConsiderationsEquipment Racks 17.32 23.875 21.875 Site Preparation Checklist Task Verified By DateComponent Checklists Task Verified By DateInstalling the Cisco uBR7225VXR Router Cisco uBR7225VXR Router Installation ChecklistCisco uBR7225VXR Router Chassis Rack-Mounting Options Typical 4-Post Equipment Rack Posts and Mounting Strips Rack-mount bracket Installing the Chassis in a Telco-Type Rack Cable-Management Bracket RequirementsRack-mount bracket Cable-management bracket Installing the Brackets on the Chassis Installing Rack-Mount Brackets on the Rear of 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 Connecting Cable Interface Line Card Cables Console and Auxiliary Port Connection EquipmentPin Signal Direction Description Console Port SignalsAuxiliary Port Signals Connecting Power Protective GroundingConnecting to the AC-Input Power Supply Powering On the Cisco uBR7225VXR Router 14 Connecting AC-Input PowerConfiguring the Interfaces OL-17309-02 Connecting the Cisco uBR7225VXR Router to the Cable Headend Two-Way Data Headend Architecture One-Way Data Headend Architecture RF and Digital Data OverviewInstalling and Configuring the Upconverter Connecting and Configuring the DownstreamMeasuring the Downstream RF Signal 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 Docsis Specification Connecting and Configuring the UpstreamConnecting the Upstream to the Optical Receiver Channel Bandwidth Cisco MC11 FpgaTesting the Upstream Configuration 30 km Fiber node Milliwatt Measure +10 dBmV at this pointOptical receiver Downstream Optical +10 dBmV Receiver +13 dBmV Attenuator Measuring the Upstream RF Signal Measuring the Upstream RF Signal Using a Spectrum AnalyzerOL-17309-02 OL-17309-02 Analyzing the Upstream RF Signal 29 Analyzing the Upstream RF Signal-64-Byte Data Packets30 Analyzing the Upstream RF Signal-1500-Byte Data Packets OL-17309-02 Symbol Rate +/-1/2 Symbol Rate Bandwidth Using the Zero-Span Method with Adjacent Upstream ChannelsCenter Frequency Minimum Resolution 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 Maintaining the Cisco uBR7225VXR Router Online Insertion and RemovalEnvironmental Monitoring and Reporting Functions Environmental MonitoringReporting Functions Parameter High Warning High Critical ShutdownRouter# show environment Temperature ranges and values are subject to change Fan Failures Providing Information TroubleshootingOverview Problem Solving with Subsystems Troubleshooting Problem Solving with SubsystemsIdentifying Startup Problems Power Subsystem Cooling SubsystemTroubleshooting the Network Processing Engine Processor SubsystemTroubleshooting Cable Interface Line Cards Verifying the Downstream Signal Other Troubleshooting Information WebsitesTroubleshooting Verifying the Downstream Signal Cisco uBR7225VXR Router Specifications Description SpecificationBroadband Routers at the following URL Bandwidth, MHz Msym/sec Mbps Rate, Mbps RF SpecificationsChannel Symbol Rate Raw Data Rate Nominal Data Channel Qpsk RawParameter Value Docsis 1.0 Transmission CharacteristicsDownstream RF Channel Transmission Characteristics 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 Cable Specifications Coaxial CablesConsole and Auxiliary Port Cables and Pinouts Identifying an RJ-45 Rollover CableConsole Port Cables and Pinouts RJ-45-to-DB-9Identifying an RJ-45 Crossover Cable Fast Ethernet Port Cables and PinoutsAuxiliary Port Cables and Pinouts RJ-45 Pin Description Identifying an RJ-45 Straight-Through CableRJ-45 Pin Fiber-Optic Cables and Connectors Figure C-5 Duplex SC Cable ConnectorIndustry-Standard Wiring Plans About Wiring StandardsPosition Color Optical Fiber Color CodesTIA/EIA Standards Information Telephone Wire Color Codes Pair Number Wire Number Solid Color Stripe Color Pin NumberPair Number Wire Number Solid Color Stripe Color Pin Number Pair Number Wire Number Solid Color Stripe Color White Blue Green Red Orange Black YellowOL-17309-02 Frequency Allocation Tables Http//developer.apple.com Http//atxnetworks.comStandards Comparisons B1, G D1, KNtsc 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 PAL/SECAM Cable Television Channels and Relative Frequencies Bandwidth Visual Carrier Aural CarrierChannel Channel Bandwidth Visual Carrier Aural Carrier Number MHz Table E-6 OL-17309-02 Manufacturer Website or Phone Number Products/Model Manufacturers for Headend Provisioning RequirementsNorth American Channel Plans 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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