Cisco Systems UBR7225VXR specifications Configuring the Interfaces

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Chapter 3 Installing the Cisco uBR7225VXR Router

Configuring the Interfaces

Note If the cable interface line card or the network processing engine is not properly seated or not fully locked into place, the Cisco uBR7225VXR router might enter a continuous restart loop. Make sure that the boards are seated and locked into position.

Hybrid fiber-coaxial (HFC) network coaxial cable is connected to the cable interface line cards.

A CompactFlash Disk is installed in a CompactFlash Disk slot in the front panel of the NPE-G1 or NPE-G2. Use only authorized Cisco provided CompactFlash Disks.

Each AC-input power cable is connected.

The console terminal is turned on.

Step 2 At the rear of the Cisco uBR7225VXR router, place the power switch on the power supply in the on () position. Repeat this step if a second power supply is installed. The power supply OK LEDs comes on.

Step 3 Listen for the fans; you should immediately hear them operating. In a very noisy environment, also look for air movement around the chassis to verify that the fans are operating. If the Cisco uBR7225VXR router was recently switched off, it might take up to 90 seconds for the power supply to restart and the fans to start operating.

Note To facilitate headend installation, a Cisco uBR7225VXR universal broadband router equipped with at least one cable interface line card generates a downstream IF carrier when it starts running.

The downstream IF carrier will be present if a cable interface line card is properly installed and passes diagnostics, the router has been powered on for more than two minutes, the IF downstream shutdown command (no cable downstream if-output) has not been configured, or the Cisco uBR7225VXR router is not in ROMMON mode. The amplitude and shape of the downstream IF carrier will not change after the Cisco uBR7225VXR router is configured, unless a non-DOCSIS data rate is configured.

Step 4 Observe the initialization process. When the system boot is complete (a few seconds), the network processing engine begins to initialize the cable interface line cards. During this initialization, the LEDs on each cable interface line card behave differently (most flash on and off). The enabled LED on each cable interface line card goes on when initialization is complete, and the console screen displays a script and system banner similar to the following:

Cisco IOS Software, 7200 Software (UBR7200-K9PU2-M), Version 12.2(33)SCA, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Thu 14-Feb-08 13:58 by prod_rel_team

Configuring the Interfaces

When you start up the Cisco uBR7225VXR router for the first time, the system automatically enters the setup facility (also called the system configuration dialog), which determines which cable interface cards are installed. The setup facility prompts you for configuration information.

On the console terminal, after the system displays the system banner and hardware configuration, the following System Configuration Dialog prompt appears:

--- System Configuration Dialog ---

 

 

Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide

 

 

 

 

 

 

OL-17309-02

 

 

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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 SummaryAudience Document OrganizationChapter 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 AC Power Site RequirementsSite Environment Site Configuration Maintaining Normal Operation General PrecautionsSpecification Minimum Maximum Power Considerations Required Network InformationBefore 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 HeadendHeadend Certification Diplex FiltersReceivers DHCP, DNS, TFTP, and TD Servers Dial-Up/Remote Access ServersAuthentication, Authorization, and Accounting Servers VoIP Gateways and GatekeepersVoIP 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 CablesConsole Port Signals Auxiliary 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 ArchitectureConnecting and Configuring the Downstream Measuring the Downstream RF SignalInstalling 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 Using the Zero-Span Method with Adjacent Upstream Channels Center Frequency Minimum ResolutionSymbol 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 Troubleshooting OverviewProviding 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 RawDocsis 1.0 Transmission Characteristics Downstream RF Channel 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 PinoutsFast Ethernet Port Cables and Pinouts Auxiliary Port Cables and PinoutsIdentifying an RJ-45 Crossover Cable Identifying an RJ-45 Straight-Through Cable RJ-45 PinRJ-45 Pin Description Figure C-5 Duplex SC Cable Connector Fiber-Optic Cables and ConnectorsAbout Wiring Standards Industry-Standard Wiring PlansOptical Fiber Color Codes TIA/EIA Standards InformationPosition 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 Manufacturers for Headend Provisioning Requirements North American Channel PlansManufacturer 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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