Page 1: Cisco Ubr7200 Series Universal Broadband Router
Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.
Page 2 DAMAGES. Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company.
Page 3: Table Of Contents
Cisco Cable Clock Card (Cisco uBR7246VXR Only) 1-17 Cisco Port Adapters 1-18 Cisco Port Adapter-Chassis-Release Matrix 1-18 Power Supplies 1-21 Fan Trays 1-23 Cisco uBR7246 and Cisco uBR7246VXR Chassis 1-25 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 4 Dial-Up/Remote Access Servers 2-14 RADIUS Dial Security Servers 2-14 Authentication, Authorization, and Accounting Servers 2-15 VoIP Gateways and Gatekeepers 2-15 VoIP SGCP Pass-Through 2-15 Headend Wiring 2-16 Interference Considerations 2-16 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 5 3-10 Installing the Chassis in the Rack 3-11 Installing the Chassis in a Workbench or Tabletop Environment 3-13 Installing the Cable-Management Bracket on a Cisco uBR7200 Series Router in a Workbench or Tabletop Environment 3-14 Cabling 3-14 Connecting Port Adapter Cables...
Page 6 4-19 Measuring the Downstream RF Signal Using CATV Mode on a Spectrum Analyzer 4-23 Measuring the Downstream IF Signal at the Cisco uBR7200 Series Router Using CATV Mode 4-23 Measuring the Downstream RF Signal at the Upconverter Output Using CATV Mode...
Page 7 Cooling Subsystem Processor Subsystem Troubleshooting the I/O Controller Troubleshooting the Network Processing Engine Troubleshooting Port Adapters Troubleshooting the Cisco Cable Clock Card (Cisco uBR7246VXR Only) Troubleshooting Cable Interface Line Cards Other Troubleshooting Information Websites About Verifying the Downstream Signal 6-10...
Page 8 A P P E N D I X North American Channel Plans European Channel Plans Site Log A P P E N D I X L O S S A R Y N D E X Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide viii OL-5421-03...
Page 9: Document Revision History
January14, 2004 Moved document to online only, updated format. 78-10243-03 July 08, 2002 Original publication and updates to 78-10243-03 Document Objectives This guide provides hardware installation instructions for the Cisco uBR7200 series universal broadband routers: Cisco uBR7246 • Cisco uBR7246VXR •...
Page 10: Audience
Preface The guide contains procedures to unpack, install, and connect the Cisco uBR7200 series router hardware that enables your cable television (CATV) headend or distribution hub to support digital data and Voice-over-IP (VoIP) services. The guide includes procedures to characterize your cable plant to ensure that data services are reliably supported over the cable infrastructure.
Page 11: Document Conventions
Router# Access to the privileged level usually requires a password. For additional information, refer to the related software configuration and reference documentation listed in the Cisco uBR7200 Series Software Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html Commands and keywords are in boldface font.
Page 12: Warning Definition
Means the described action saves time. You can save time by performing the action described in the paragraph. Means the following information might help you solve a problem. For all warning translations, refer to Regulatory Compliance and Safety Information for Cisco uBR7200 Series Universal Broadband Routers at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html...
Page 13 Utilize o número da instrução fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos que acompanham este dispositivo. GUARDE ESTAS INSTRUÇÕES Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide xiii OL-5421-03...
Page 14 Använd det nummer som finns i slutet av varje varning för att hitta dess översättning i de översatta säkerhetsvarningar som medföljer denna anordning. SPARA DESSA ANVISNINGAR Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 15 Brug erklæringsnummeret efter hver advarsel for at finde oversættelsen i de oversatte advarsler, der fulgte med denne enhed. GEM DISSE ANVISNINGER Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 16 Preface Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 17: Obtaining Documentation And Submitting A Service Request
Obtaining Documentation and Submitting a Service Request For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at: http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html...
Page 18 Preface Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide xviii OL-5421-03...
Page 19 The Cisco uBR7200 series universal broadband routers comprise the Cisco Cable Modem Termination System (CMTS) solution. Two different chassis are available: the Cisco uBR7246 and Cisco uBR7246VXR. The routers allow high-speed data services to be packaged similar to basic cable television service or video fare.
Page 20: Chapter 1 Cisco Ubr7200 Series Overview
Cisco MC16B to a Cisco MC16C or replacing a high-speed serial interface [HSSI] adapter with an ATM adapter), you must copy your startup configuration to your running configuration on the Cisco uBR7200 series routers to enable the interfaces on the new cable interface line card or port adapter.
Page 21: Cisco Ubr7246 Router
If you are using two power supplies, ensure that each power supply is plugged into a separate branch Caution circuit. The Cisco uBR7246 router does not support a mix of AC-input and DC-input power supplies in the same Note chassis. If an AC-input power supply is installed and you want to add a second, redundant power supply, you must add another AC-input power supply.
Page 22 100 pounds (45.4 kg). For clearance requirements and rack-mount installation considerations, refer to “Site Environment” section on page 2-6. The Cisco uBR7246 and Cisco uBR7246VXR routers have the same form factor. However, only the Note Cisco uBR7246VXR router has a cable clock card.
Page 23: Cisco Ubr7200 Series Network Interface Overview
Card Slot and Logical Interface Numbering In all of the Cisco uBR7200 series universal broadband routers, the slot number is the chassis slot in which a port adapter or a cable interface card is installed, and the logical interface number is the physical location of the interface port on a port adapter.
Page 24: Cisco Ubr7246
3 and slot 5; and bus mb2 is for port adapter slot 2 and cable interface card slot 4 and slot 6. The Cisco uBR7246VXR port adapter slots are numbered 1 and 2; port adapter slot 0 is the Fast Ethernet port on the I/O controller. Cable interface line card slots are numbered from 3 to 6. See...
Page 25: Mac-Layer Address
Cisco uBR7200 Series Overview Cisco uBR7200 Series Network Interface Overview Some port adapters available for the Cisco uBR7246VXR only work if a minimum hardware revision Note requirement has been satisfied. For specific information, refer to the Cisco uBR7200 Series Software Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html...
Page 26: Supported System Configurations Overview
Chapter 1 Cisco uBR7200 Series Overview Supported System Configurations Overview For information on the commands used to configure your Cisco uBR7200 series, refer to the Cisco IOS Configuration Fundamentals Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/ios/12_2/configfun/configuration/guide/ffun_c.html Also refer to the Cisco IOS Configuration Fundamentals Command Reference at the following URL: http://www.cisco.com/en/US/docs/ios/fundamentals/command/reference/cf_book.html...
Page 27: Supported System Configurations Overview
Telco return cable interfaces transmit over the PSTN. Dial-up servers and other equipment – handle the upstream traffic and pass appropriate data to the Cisco uBR7200 series routers. For telco return specifics, refer to the “Telco Return” section on page 1-11.
Page 28: Vpn Services
Many VPN architectures involve the use of encryption and decryption. Encryption and decryption are Note subject to export licensing controls. For more information, refer to Regulatory Compliance and Safety Information for the Cisco uBR7200 Series Universal Broadband Routers, at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide...
Page 29: Ip Telephony Services
PSTN and IP network path that terminates at the Cisco uBR7200 series router. Upstream data transmission takes place over a telephone modem (external or internal to a cable interface, as well as a cable interface card in a PC, based on the third-party cable interface vendor) connected to an analog telephone line.
Page 30: Hardware Component Descriptions
TCD messages cable modem series Hardware Component Descriptions Most Cisco uBR7200 series universal broadband router components are field-replaceable units (FRUs). These units, unless otherwise noted, are OIR compatible. See “Online Insertion and Removal” section on page 5-1 FRU documentation (instructions on installing, removing, and replacing) is located at the following URL: http://www.cisco.com/en/US/products/hw/routers/ps341/prod_installation_guides_list.html...
Page 31: Network Processing Engine
The network processing engine (NPE) maintains and executes the system management functions for the Cisco uBR7200 series routers. The NPE also shares the system memory and environmental monitoring functions with the I/O controller. The NPE performs the following system management functions: Sending and receiving routing protocol updates •...
Page 32 SDRAM memory arrays in the system allow concurrent access by port adapters and the processor. Cisco uBR7200-NPE-G1—SDRAM: 256 MB (default), 512 MB, and 1 GB. There are two – DRAM memory slots, so 256-MB of memory consists of two 128 MB memory SODIMMs, 512 MB consists of two 256-MB memory SODIMMs, and 1 GB consists of two 512 MB memory SODIMMs.
Page 33: Input/Output Controller
Note receptacle can be configured for use at a time. Many of the initial shipments of the Cisco uBR7246 chassis that were equipped with a Fast Ethernet I/O Note controller have an I/O controller with a single MII receptacle installed. These I/O controllers are fully compatible with the router, and they are still supported;...
Page 34 Cisco IOS software image. Erasable programmable read-only memory (EPROM) for storing sufficient code for booting the • Cisco IOS software. Two environmental sensors for monitoring the cooling air as it enters and leaves the Cisco uBR7200 • series chassis. Table 1-2 lists the I/O controller memory components.
Page 35: Cisco Cable Interface Line Cards
Cisco uBR7200 Series Overview Hardware Component Descriptions If you order an I/O controller as a spare for a Cisco uBR7200 series, use the product numbers UBR7200-I/O= (without a Fast Ethernet port) or UBR7200-I/O-FE= (with a Fast Ethernet port). These I/O controllers have the Cisco IOS software images used by the Cisco uBR7200 series loaded on the flash memory SIMMs.
Page 36: Cisco Port Adapters
Chapter 1 Cisco uBR7200 Series Overview Hardware Component Descriptions For detailed information on the cable clock card refer to Cisco Cable Clock Card for the Cisco uBR7246VXR Universal Broadband Router at the following URL: http://www.cisco.com/en/US/docs/ios/12_1t/12_1t1/feature/guide/natlclck.html Refer to Appendix F, “Manufacturers for Headend Provisioning Requirements”...
Page 37 Chapter 1 Cisco uBR7200 Series Overview Hardware Component Descriptions Table 1-3 Cisco uBR7200 Series Port Adapter, Chassis, and Cisco IOS Release Compatibility (continued) Product Number Cisco uBR7246 Cisco uBR7246VXR PA-2FEISL-FX—2-port 100BASE-FX Fast 12.0(5)T1, 12.0(6)SC, 12.1(1a)T1, 12.0(7)SC, 12.0(7)T, 12.1(1a)T1, Ethernet port adapter with Inter-Switch Link 12.1 EC...
Page 38 Chapter 1 Cisco uBR7200 Series Overview Hardware Component Descriptions Table 1-3 Cisco uBR7200 Series Port Adapter, Chassis, and Cisco IOS Release Compatibility (continued) Product Number Cisco uBR7246 Cisco uBR7246VXR PA-MC-8E1/120—8-port multichannel E1 12.0(1)T, 12.1(1a)T1, Not applicable ISDN PRI single-wide port adapter 12.1 EC...
Page 39: Power Supplies
3. The Gigabit Ethernet port adapter must be combined with the appropriate optical fiber cable and a Gigabit Interface Converter (GBIC). 4. To use a PA-H 1-port HSSI port adapter in a Cisco uBR7246VXR router, be sure that you have the minimum required hardware revision (version 1.17, part number 800-02747-06) or a more recent version of the port adapter.
Page 40 AC-input power supply to the site AC power source. A cable-retention clip secures the power cable to the AC-input power supply. The AC-input power supply has an electrical current rating of 7A for the Cisco uBR7246 and Cisco Note uBR7246VXR routers.
Page 41: Fan Trays
In each of the Cisco uBR7200 series routers, the fan tray is located on the left side of the chassis (when viewing the router from the front) and receives 12 VDC through a DC power harness that connects directly to the router midplane.
Page 42: Fan Trays
To remove the fan tray from the chassis, loosen the captive installation screw on the front of the fan tray and slide the tray out, using the attached handle. Detailed instructions for removing and replacing the fan tray are contained in the document Cisco uBR7200 Series Universal Broadband Router Fan Tray Replacement Instructions at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/installation/4939sbc.html...
Page 43: Cisco Ubr7246 And Cisco Ubr7246Vxr Chassis
The front of the chassis has one slot for an I/O controller, two slots for single-width port adapters (or one dual-width port adapter), four slots for cable interface cards, one slot for a fan tray, and one bay for the subchassis and midplane. See Figure 1-13. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 1-25 OL-5421-03...
Page 44: Subchassis And Midplane
I/O controller, and a connector for the fan tray. The Cisco uBR7246VXR also features one connector for a cable clock card. The power supply side of the midplane has two connectors for power supplies and one connector for a network processing engine.
Page 45: Flash Memory Cards
Flash Memory Cards The Cisco uBR7200 series universal broadband router supports up to two installed Type II PCMCIA flash memory cards provided by Cisco. Flash memory (flash memory cards and the flash SIMM on the I/O controller) allows you to remotely load and store multiple system and boot helper images.
Page 46: Compactflash Disk
The CompactFlash Disk also supports the Cisco IOS File System feature, which provides a single interface to all of the router’s file systems, including the Flash Disks and flash memory, as well as network file systems such as File Transfer Protocol (FTP) and Trivial FTP (TFTP) servers.
Page 47: Safety Recommendations
Before installing, configuring, or maintaining the Cisco uBR7246, or Cisco uBR7246VXR routers, review the safety warnings listed in the Regulatory Compliance and Safety Information for Cisco uBR7200 Series Universal Broadband Routers at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html...
Page 48: C H A P T E R 2 Preparing The Cisco Ubr7200 Series Router For Installation
) wire for the input to each DC-input power supply. The equipment grounding should be in accordance with local and national electrical codes. The Cisco uBR7200 series router operates safely when it is used in accordance with its marked • electrical ratings and product usage instructions.
Page 49: Safety With Electricity
The port adapters, cable interface line cards, and redundant power supplies are designed to be removed and replaced while the system is operating, without presenting an electrical hazard or damage to the system. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 50: Preventing Electrostatic Discharge Damage
I/O controller, cable interface card, port adapter, or cable clock card component side up on an antistatic surface or in a static shielding bag. If you are returning the item to the factory, immediately place it in a static shielding bag. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 51: Site Requirements
AC Power The AC-input power supply uses a power factor corrector that allows the Cisco uBR7200 series router to operate on input voltage and frequency within the ranges of 100 to 240 VAC and 50/60 Hz.
Page 52: Dc Power
To provide airflow through the Cisco uBR7200 series router, cooling air is drawn in through the air intake vent on the right side of the chassis (when viewing the router from the front) and is exhausted through the left side of the chassis.
Page 53: General Precautions
We recommend keeping the Cisco uBR7200 series router off the floor and out of any area that tends • to collect dust, excessive condensation, or water.
Page 54: Before You Begin
Installation Tools Your Cisco uBR7200 series 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 •...
Page 55: Rack-Mount And Cable-Management Kit
Four 10/32 x 3/8-inch slotted binderhead screws to secure the rack-mount brackets to the rack rails. • You must install the cable-management bracket on the right side of the Cisco uBR7246 or Cisco Note uBR7246VXR chassis, when viewed from the front. If the cable-management bracket is installed on the left side of the chassis, where the internal fans are located, you will not be able to easily remove or replace the fan tray.
Page 56: Shipping Container Contents
Crossover Ethernet cable with RJ-45 connectors—If you plan to connect a computer directly to an Ethernet port on a PA-4E port adapter or a PA-8E port adapter installed in the Cisco uBR7200 series router, you need this type of cable.
Page 57: Verifying The Shipping Container Contents
• Step 3 Verify that the port adapters installed in your Cisco uBR7200 series router match the port adapter types on the packing list. Verify that the number of cable interface cards installed in your Cisco uBR7200 series router matches Step 4 the number of cable interface cards that you ordered.
Page 58: Headend Certification
Install and configure enough upconverter ports to support the number of downstream cable interface card ports installed in each Cisco uBR7200 series router you are installing. The number of upconverter units needed depends on the upconverter manufacturer.
Page 59: Diplex Filters
In two-way cable networks, the diplex filter takes the upstream and downstream and combines them on one cable for the cable interface. The downstream output signal from the Cisco uBR7200 series router runs through the upconverter and then enters the high filter port of the diplex filter. The signal exits the common port of the filter and is distributed to the cable interfaces.
Page 60: Dhcp, Dns, Tftp, And Td Servers
Because a telco return cable network relies on the local telephone system to complete the upstream data path to the Cisco uBR7200 series, you need to be sure that you provision your network with a dial-up access server and other required equipment through which remote cable interfaces will gain access to your headend.
Page 61: Authentication, Authorization, And Accounting Servers
VoIP Gateways and Gatekeepers To support digitized voice transmission using Cisco IOS Release 12.0(5)T1 CMTS images, be sure to include VoIP gateways and gatekeepers in your configuration. Cisco IOS Release 12.0(5)T1 supports VoIP by using the H.323 protocol.
Page 62: Headend Wiring
Strong EMI, especially when caused by lightning or radio transmitters, can destroy the signal drivers • and receivers in the Cisco uBR7200 series router, and can even create an electrical hazard by conducting power surges through lines and into equipment. (Review the safety warnings in the “Safety with Electricity”...
Page 63: Equipment Racks
If a power strip does impair a rear rack-mount installation, remove the power strip before installing the Cisco uBR7200 series router in the rack, then replace it after the chassis is installed. As an alternative, you can mount the Cisco uBR7200 series router on an equipment shelf if the rack dimensions allow you to secure the router to the shelf, and the overall configuration permits safe installation and access.
Page 64 We recommend the rear bracket mounting system for four-post racks because this method enables you Note to keep cables from protruding too far out in front of the Cisco uBR7200 series router, and simultaneously manage the cables at the front of the chassis with the cable-management bracket.
Page 65 “Cisco uBR7200 Series Chassis Rack-Mounting Options” section on page 3-2. Do not install the Cisco uBR7200 series chassis in an enclosed rack or room that is not properly Caution ventilated or air-conditioned. The Cisco uBR7200 series chassis overheats if the input air temperature...
Page 66: Site Preparation Checklist
Site Preparation Checklist Site Preparation Checklist Before installing the Cisco uBR7200 series 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.
Page 67: Component Checklists
Titles and quantities of documents will vary. • Cisco uBR7246 and Cisco uBR7246VXR Component List Table 2-3 provides the list to verify the contents of the shipping container for the Cisco uBR7246 and Cisco uBR7246VXR routers. Table 2-3 Cisco uBR7246VXR and Cisco uBR7246 Component List...
Page 68 Chapter 2 Preparing the Cisco uBR7200 Series Router for Installation Component Checklists Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 2-22 OL-5421-03...
Page 69: Cisco Ubr7200 Series Router Installation Checklist
“Cisco uBR7200 Series Chassis Rack-Mounting Options” section on page 3-2. If you do not plan to install your Cisco uBR7200 series in an equipment rack, proceed to the “Installing the Chassis in a Workbench or Tabletop Environment” section on page 3-13.
Page 70: C H A P T E R 3 Installing The Cisco Ubr7200 Series Router
Cisco uBR7246. The setup necessary to rack-mount the Cisco uBR7246VXR router is the same as for the Cisco uBR7246 router in all cases. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide...
Page 71 We recommend the rear bracket mounting system for 4-post racks. This method enables you to keep Note cables from protruding too far out in front of the Cisco uBR7200 series router and to simultaneously manage the cables at the front of the chassis with the cable-management bracket.
Page 72 Installing the Chassis in a 4-Post Rack-Flush-Mounted Front Installation Rack-mount bracket See the “Installing Rack-Mount Brackets on the Front of the Chassis” section on page 3-8 for bracket mounting information. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 73: Cable-Management Bracket Requirements
Figure 3-6 on page 3-6.) You must install both sets of brackets before you install the chassis in the rack. If you rack-mount a Cisco uBR7246 or Cisco uBR7246VXR router from the front, you cannot install a Note cable-management bracket.
Page 74 Note The cable-management bracket must be installed on the right side of the chassis when viewed from the front for the Cisco uBR7246 and Cisco uBR7246VXR routers. Figure 3-6 Installing the Chassis in a 4-Post Rack with an Installed Cable-Management Bracket...
Page 75: Installing The Brackets On The Chassis
There are eight holes in each of the rack-mount brackets for the Cisco uBR7246VXR and Cisco uBR7246 chassis. You may use either set of four holes to align the bracket to the threaded holes in the sides of the chassis.
Page 76: Installing Rack-Mount Brackets On The Front Of The Chassis
There are eight holes in each of the rack-mount brackets for the Cisco uBR7246VXR and Note Cisco uBR7246 chassis. You may use either set of four holes to align the bracket to the threaded holes in the sides of the chassis.
Page 77 Thread four M4 x 6-mm Phillips flathead screws through the rack-mount bracket and into the side of the Step 3 chassis. Use a number 2 Phillips screwdriver to tighten the screws. Repeat Step 1 through Step 3 for the other rack-mount bracket. Step 4 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 78: Installing Rack-Mount Brackets In The Middle Of The Chassis
There are eight holes in each of the rack-mount brackets for the Cisco uBR7246 and Cisco uBR7246VXR chassis. You may use either set of four holes to align the bracket to the threaded holes in the sides of the chassis.
Page 79: Installing The Chassis In The Rack
Chapter 3 Installing the Cisco uBR7200 Series Router Installing the Brackets on the Chassis The cable-management bracket must be installed on the right side of the Cisco uBR7246 and Note Cisco uBR7246VXR chassis when viewed from the front. Step 6 Thread four M3 x 6-mm Phillips panhead screws through the cable-management bracket and into the chassis, and tighten the screws.
Page 80 (See Figure 3-2 on page 3-4.) While keeping the brackets flush against the posts or mounting strips, position the Cisco uBR7200 series Step 5 so that the holes in the brackets are aligned with those in the mounting strips.
Page 81: Installing The Chassis In A Workbench Or Tabletop Environment
• The Cisco uBR7200 series router requires at least 3 inches (7.72 cm) of clearance at the inlet and exhaust vents (the right and left sides of the universal broadband router). The Cisco uBR7200 series router should be installed off the floor. (Dust that accumulates on the •...
Page 82: Installing The Cable-Management Bracket On A Cisco Ubr7200 Series Router In A Workbench Or Tabletop Environment
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. Statement 1021 The instructions for connecting the cables for each port adapter installed in the Cisco uBR7200 series universal broadband router are contained in the respective installation document for each port adapter.
Page 83: Connecting Cisco Cable Clock Card Cables (Cisco Ubr7246Vxr Only)
Connecting Cable Interface Line Card Cables The instructions for connecting the cables for each cable interface card installed in the Cisco uBR7200 series universal broadband router are contained in the cable interface card installation document. Refer to the Cisco uBR7200 Series Interface Line Card Hardware Installation at the following URL: http://www.cisco.com/en/US/docs/interfaces_modules/cable/line_cards/installation/guide/mcxxfru.html...
Page 84: Console And Auxiliary Port Connection Equipment
Cisco uBR7200 series universal broadband router. The auxiliary port is a DTE DB-25 plug for connecting a modem or other DCE device (such as a channel service unit/data service unit [CSU/DSU] or other router) to the Cisco uBR7200 series router.
Page 85: Console Port Signals
FAST ETHERNET INPUT/OUTP UT CONTROLLE R Modem Console terminal Before connecting a terminal to the console port, configure the terminal to match the Cisco uBR7200 series router console port as follows: • 9600 baud • 8 data bits No parity •...
Page 86: Auxiliary Port Signals
100BASE-FX or 100BASE-T physical media. (See Figure 3-14 on page 3-19.) This port does not support 10-Mbps Ethernet connectivity, only 100-Mbps Fast Ethernet. Note Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 3-18 OL-5421-03...
Page 87 I/O controller. If you connect an external transceiver to the Fast Ethernet port when the Cisco uBR7200 series router is powered on, the system resets and you could lose data. The I/O controller does not support online insertion and removal (OIR).
Page 88 – – +5.0 volts (V) 1. Any pins not indicated are not used. 2. Tx_CLK is provided by the external transceiver. 3. Rx_CLK is provided by the external transceiver. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 3-20 OL-5421-03...
Page 89: Connecting Power
Installing the Cisco uBR7200 Series Router Connecting Power Connecting Power Following are the procedures for connecting AC-input and DC-input power to your Cisco uBR7200 series universal broadband router. High leakage current - earth connection essential before connecting to system power supply.
Page 90: Connecting To The Ac-Input Power Supply
The device is designed to work with TN power systems. Statement 19 Warning Step 1 At the rear of the Cisco uBR7200 series universal broadband router, ensure that the power switch on the power supply is in the OFF (0) position. Step 2 Slide the cable-retention clip to the left, away from the AC receptacle, and plug in the power cable.
Page 91: Connecting To The Dc-Input Power Supply
Installing the Cisco uBR7200 Series Router Connecting Power Connecting to the DC-Input Power Supply The Cisco uBR7200 series universal broadband router is intended for installation in a Common Bonding Network (CBN). Warning Before connecting or disconnecting ground or power wires to the chassis, ensure that power is removed from the DC circuit.
Page 92 Install the strain-relief cover over the +48V and –48V leads and secure the cover to the strain-relief studs Step 7 using the two M4 nuts with a 7-mm wrench or nut driver (or adjustable wrench). See Figure 3-19. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 3-24 OL-5421-03...
Page 93: Powering On The Cisco Ubr7200 Series Router
Each port adapter is inserted in its slot and the port adapter lever or retention clip is in the locked • position. The Cisco cable clock card (Cisco uBR7246VXR) is inserted in its slot and its captive installation • screws are tightened.
Page 94 The console terminal is turned on. • At the rear of the Cisco uBR7200 series router, place the power switch on the power supply in the ON Step 2 (|) position. Repeat this step if a second power supply is installed. The green OK LED on the power supply comes on.
Page 95: Configuring The Interfaces
Compiled Mon 12-Jul-99 04:10 by smith Configuring the Interfaces When you start up the Cisco uBR7200 series router for the first time, the system automatically enters the setup facility (also called the system configuration dialog), which determines which port adapters and cable interface cards are installed.
Page 96 Chapter 3 Installing the Cisco uBR7200 Series Router Powering On the Cisco uBR7200 Series Router Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 3-28 OL-5421-03...
Page 97 C H A P T E R Connecting the Cisco uBR7200 Series Router to the Cable Headend This chapter describes how to connect the Cisco uBR7200 series universal broadband router to a cable headend and contains the following sections: •...
Page 98: C H A P T E R 4 Connecting The Cisco Ubr7200 Series Router To The Cable Headend
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Two-Way Data Headend Architecture Two-Way Data Headend Architecture Figure 4-1 shows a typical headend configuration configured for two-way data, including digitized voice and fax. Figure 4-1 Typical Cable Headend Configuration for Two-Way Data...
Page 99: One-Way Data Headend Architecture
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend One-Way Data Headend Architecture One-Way Data Headend Architecture Figure 4-2 shows a typical headend configuration configured for one-way (downstream) data in a telco return cable system. Figure 4-2...
Page 100: Connecting And Configuring The Downstream
You might need to add attenuation to the downstream path between the Cisco uBR7200 series cable interface line card and the upconverter. Cisco cable interface cards produce an IF output level of either +32 dBmV (+/–2 dB), +40 dBmV (+/–2 dB), or +42 dBmV (+/–2 dB) depending upon which version of cable interface card you have installed.
Page 101: Setting The North American Upconverter Input Level
You must set the upconverter IF input level, according to the manufacturer’s instructions, to match the downstream output level of the cable interface cards. Earlier Cisco cable interface card output was +32 dBmV (+/–2 dB). More recently, however, Cisco cable interface cards feature an output rating of +42 dBmV (+/–2 dB). Refer to the “Measuring the Downstream RF Signal”...
Page 102: Setting The European Upconverter Input Level
You must set the upconverter IF input level, according to the manufacturer’s instructions, to match the downstream output level of your Cisco MC16E cable interface card. The Cisco MC16E features an output rating of +40 dBmV (+/–2 dB). Refer to the “Measuring the Downstream RF Signal”...
Page 103: Testing The Upconverter Output Level
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Downstream Testing the Upconverter Output Level If you are using a GI, Barco, or Scientific Atlanta upconverter, you can measure the 0 dBmV test point at the front of the upconverter.
Page 104: Measuring Upconverter Phase Noise Contribution
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Downstream • The Vecima MA4040 displays the channel’s center frequency. • The GI C6U displays a frequency that is 1.75 MHz below the channel’s center frequency. This value is equivalent to the visual carrier frequency for an analog TV channel occupying the same spectrum.
Page 105 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Downstream Connect a spectrum analyzer to the downstream connector on a Cisco cable interface card installed in a Step 1 Cisco uBR7200 series universal broadband router.
Page 106 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Downstream Figure 4-8 Phase Noise Measurement Notice that the total channel power (across 6 MHz) does not change between the modulated carrier and Note the unmodulated continuous wave (CW) carrier.
Page 107: Viewing The Rf Output Signal
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Downstream Narrow your span even further from 6 MHz to 100 kHz to zoom in on the center frequency of the channel Step 8 carrier and reduce your resolution bandwidth and video bandwidth to absolute minimum values for your particular spectrum analyzer.
Page 108 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Downstream A second signal appears on the spectrum analyzer’s screen, yielding a display similar to that in Figure 4-11. Figure 4-11 Comparison of IF Input Sweep and RF Output Sweep...
Page 109: Fine-Tuning The Center Frequencies
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Downstream Figure 4-12 Increased Frequency Resolution on IF Input Sweep and RF Output Sweep Note This step displays an even greater resolution for both the IF input and RF output signals at your upconverter.
Page 110 Re-establish 64-QAM downstream digital data transmission from the cable interface card by setting the Step 5 downstream symbol rate to 5056941 symbols/second on your downstream cable interface. To accomplish this, enter the following Cisco IOS command in interface configuration mode: Router(config-if)# cable downstream symbol 5056941 Note The value 5056941 symbols/second is specified by DOCSIS for 64-QAM transmissions in a 6-MHz downstream channel plan.
Page 111: Completing The Downstream Configuration
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Downstream Completing the Downstream Configuration To complete the downstream configuration, you must combine the upconverter output with the main headend broadcast feed into the laser transmitter in the headend. In the example shown in...
Page 112: Testing The Downstream Configuration
Cisco uBR7200 series universal broadband router cable interface card. The nominal input level for a Cisco uBR7200 series router upstream port is 0 dBmV, but it can also be adjusted as low as –10 dBmV or as high as +25 dBmV using Cisco uBR7200 series software. The router instructs the modem to adjust its output level to provide the correct cable interface line card input level.
Page 113: Measuring The Downstream Rf Signal Using The Channel Power Option On A Spectrum Analyzer
Refer to the user guide that accompanied your spectrum analyzer to determine the exact steps required Note to use your analyzer to perform these measurements. Connect a spectrum analyzer to the downstream connector on a Cisco cable interface card installed in a Step 1 Cisco uBR7200 series router.
Page 114 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-15 Viewing the Downstream IF Signal on a Spectrum Analyzer Measure the IF signal using the channel power option on your spectrum analyzer. Set your channel Step 5 spacing and your channel bandwidth to 6 MHz.
Page 115: Measuring The Downstream Rf Signal At The Upconverter Output
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-17 Measuring the IF Channel Power Using Video Averaging The approximate in-channel peak-to-valley flatness may be verified using the spectrum analyzer’s video Note averaging feature.
Page 116 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-18 Overloaded Spectrum Analyzer Input Step 4 Set the input of the upconverter to a digital QAM signal and the output level to the manufacturer’s recommended settings.
Page 117 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-20 Measuring the RF Signal at the Upconverter Output—Overload Condition Corrected with Attenuation Change the spectrum analyzer settings to view the digital channel power. This setting enables you to see Step 7 if there is too much power on the upconverter output.
Page 118 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-22 Measuring the RF Signal at the Upconverter Output—Output Adjusted to Correct Range Select the video averaging feature on the spectrum analyzer. The signal becomes smoother and Step 9 frequency response problems might become visible.
Page 119: Measuring The Downstream Rf Signal Using Catv Mode On A Spectrum Analyzer
HFC network from operating. The specified maximum peak-to-valley measurement from a Cisco cable interface card is +/–1.5 dB across 5.6 MHz. At the output of the upconverter, the maximum tilt should not exceed +/–1.5 dB across 5.6 MHz. If the tilt is greater than +/–1.5 dB across 5.6 MHz when measured, the upconverter might not be compatible with digital QAM...
Page 120 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Set the spectrum analyzer to CATV mode (CATV analyzer option) and select the channel measurement Step 3 option to view the downstream intermediate frequency (IF) signal. Your analyzer should display a signal...
Page 121 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Enter a digital channel to measure and select digital channel power. Your spectrum analyzer will display Step 5 a signal similar to the one shown in Figure 4-26.
Page 122: Mode
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-28 Measuring the IF Signal on a Spectrum Analyzer in CATV Mode—Digital Channel Power Screen (Video Averaging) The approximate in-channel peak-to-valley flatness can be verified using the spectrum analyzer’s video Note averaging feature.
Page 123 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-29 Viewing the Downstream RF Signal at the Upconverter Output in CATV Mode—Initial Screen Advance to the last of the three screens in this display. Your analyzer should display a signal similar to...
Page 124 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-31 Measuring the RF Signal at the Upconverter Output in CATV Mode—Digital Channel Power Screen Using the spectrum analyzer’s reference level control, adjust the amplitude of the displayed signal until Step 9 the signal peak is within the top graticule of the analyzer’s display grid as shown in...
Page 125 HFC network from operating. The specified maximum peak-to-valley measurement from a Cisco cable interface card is +/–1.5 dB across 5.6 MHz. At the output of the upconverter, the maximum tilt should not exceed +/–1.5 dB across 5.6 MHz. If the tilt is greater than +/–1.5 dB across 5.6 MHz when measured, the upconverter might not be compatible with digital QAM...
Page 126: Connecting And Configuring The Upstream
Figure 4-34.) The default upstream input level to the Cisco uBR7200 series cable interface line card is 0 dBmV. You may adjust the upstream input level to other values using the Cisco IOS software running on your router. The Cisco uBR7200 series router uses automatic power control when transmitting to remote cable modems.
Page 127: Testing The Upstream Configuration
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Upstream Figure 4-34 Connecting and Configuring the Upstream Cisco uBR7200 series router Upstream X-level test point signal level 2-way must be the same for all splitter optical receivers (+/- 0.5 dB),...
Page 128 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Upstream This “X-level” test point measurement will be different for every fiber node in the HFC network until you adjust the attenuation on the upstream. You must adjust the attenuation so that this measurement is the same on every fiber node.
Page 129 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Connecting and Configuring the Upstream Figure 4-37 Calibrating Multiple “X-level” Test Points Connected to Multiple Upstream Ports Cisco uBR7200 series router Upconverter Downstream Upstream Cable 0 dBmV Reverse optical...
Page 130: Measuring The Upstream Rf Signal
| include frequency command, available in Cisco IOS Release 11.3(6)NA or later releases and Cisco IOS Release 12.0(5)T1 or later releases. For example, if you wanted to view the center frequency of port 0 on a cable interface card in slot 3, you would enter the show controller cable 3/0 | include frequency command.
Page 131 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-38 Measuring the Upstream RF Signal—Setting the Resolution and Video Channel Bandwidth The horizontal line passing through the center of the spectrum analyzer display in...
Page 132 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Refer to the documentation that accompanied your particular spectrum analyzer for detailed instructions Note on activating and positioning the trigger line. A known workaround exists for the Agilent 8591C spectrum analyzer. After activating and positioning the trigger line in video mode, you must press the “video”...
Page 133: Analyzing The Upstream Rf Signal
When you have set up your spectrum analyzer to accurately read the upstream RF signal, you can verify that a remote cable modem is operating as it should by pinging the modem via a console terminal. Log in to your Cisco uBR7200 series universal broadband router with a console terminal. Step 1 Adjust the sweep time on your spectrum analyzer to 20 msec.
Page 134 1.5 dB. Differences greater than 1.5 dB indicate a possible cable plant or remote cable modem problem. To further illustrate this point, you can log in to your Cisco uBR7200 series router using a console Note terminal and by entering the show cable modem command to obtain a report of the receive power ratings for each modem.
Page 135 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-43 Analyzing the Upstream RF Signal—Multiple Active Remote Cable Modems (A) Figure 4-44 Analyzing the Upstream RF Signal—Multiple Active Remote Cable Modems (B)
Page 136: Using The Zero-Span Method With Adjacent Upstream Channels
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal The importance of this example is to bring to your attention the need for minimal outside plant noise. Time-varying, fast noise can cause bit errors in packet transmissions, rendering your communication link unreliable, if not unusable.
Page 137 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Display a signal complete with preamble and upstream data transmission information similar to the Step 1 resulting signal from Step 3 through Step 10 under the “Measuring the Upstream RF Signal Using a...
Page 138 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-47 Vector Signal Analyzer Plot of Upstream Data Burst The upper graph in Figure 4-47 represents the frequency domain and the lower graph represents the time domain.
Page 139 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-48 Vector Signal Analyzer Plot of Upstream Data Burst (Preamble Only) Figure 4-47 Figure 4-48 illustrate the benefit of properly adjusting the center frequency of your spectrum analyzer to enable the power measurement of the preamble to match the power measurement of the rest of the digital transmission.
Page 140 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-49 Vector Signal Analyzer Plot of Upstream Data Burst (Preamble Only)—QPSK Demodulation Mode Switch your vector signal analyzer over to quaternary phase shift keying (QPSK) demodulation mode.
Page 141 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-50 Vector Signal Analyzer Plot of Upstream Data Burst (Preamble Only)—Digital Demodulation Mode Before moving on to Step 3, be sure to hook your spectrum analyzer back up to the upstream signal Note source.
Page 142 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-51 Preamble Amplitude Before Center Frequency Adjustment The slight amplitude variations shown in these figures are normal signal level variations between bursts Note in the upstream channel.
Page 143 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-52 Preamble Amplitude Recovery After Center Frequency Adjustment To get an even better look at the patterns and dramatic shifts in amplitude within the preamble itself, you can accelerate the sweep time for your zero-span signal processing.
Page 144 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Upstream RF Signal The 4.25 dB decrease in amplitude is due to a combination of half of the channel bandwidth (3 dB) and Note an additional 1.25 dB decrease attributed to the digital channel filter mask, known as the “alpha.” The value of alpha is 25 percent of an upstream DOCSIS channel’s width, and the peak signal energy spread...
Page 145: Measuring The Rf Signal At The Forward Test Point On A Laser Transmitter
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the RF Signal at the Forward Test Point on a Laser Transmitter The slight “ramp-up” at the beginning of the preamble when viewed in this mode is attributed to the time Note required to charge the spectrum analyzer’s detector circuit.
Page 146 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the RF Signal at the Forward Test Point on a Laser Transmitter Figure 4-57 Downstream Forward Test Point on the Laser Transmitter—Video Channel Display Select the carrier level (or amplitude) function.
Page 147 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the RF Signal at the Forward Test Point on a Laser Transmitter Figure 4-59 Downstream Forward Test Point on the Laser Transmitter—Digital Channel Display Step 6 Go to the main menu on the spectrum analyzer and advance the screen displays (next screen) until the digital channel power display is shown.
Page 148: Configuring The Digital Signal
Cisco uBR7200 series universal broadband router and cable modems. We recommend installing a Cisco uBR900 series cable access router at the headend to verify the digital data configuration. For instructions on how to install a Cisco uBR900 series access router, refer to the...
Page 149 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Configuring the Digital Signal Careful system design and operation can prevent potentially serious intermittent performance problems across your cable interface network. Each cable operator should make use of the following guidelines and practices to ensure reliable operation of any 64-QAM based digital network: “NCTA Recommended Practices for Measurements on Cable Television Systems”...
Page 150 Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Configuring the Digital Signal Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 4-54 OL-5421-03...
Page 151: Chapter 5 Maintaining The Cisco Ubr7200 Series Router
• Online Insertion and Removal All cable interface line cards or port adapters in a Cisco uBR7200 series universal broadband router support online insertion and removal (OIR). Technically, the Cisco uBR7200 series universal broadband routers support true OIR, or “hot swapping,” of cable interface line cards only when exchanging cable interface line cards of the exact same type (for example, exchanging a Cisco uBR-MC28U card for another Cisco uBR-MC28U card).
Page 152: Environmental Monitoring And Reporting Functions
When you remove or insert a port adapter or cable interface line card in a Cisco uBR7200 series router, the midplane pins send signals to notify the system, which then does the following: Rapidly scans the midplane for configuration changes.
Page 153: Environmental Monitoring
Configuration document for their exact locations. Temperature outlets 4 and 5 on the Cisco uBR7246VXR are located on individual fans in the fan tray—each sensor is taped to one of the individual fan assemblies in the fan tray. The exact location of these sensors can vary from one fan tray to another, but...
Page 154: Reporting Functions
Reporting Functions The Cisco uBR7200 series router displays warning messages on the console if chassis interface-monitored parameters exceed a desired threshold. You can also retrieve and display environmental status reports with the show environment, show environment all, show environment last, and show environment table commands.
Page 155 -17.33 Reason for last shutdown: power supply The example above is specific to the Cisco uBR7246 and you might notice a difference in the output for Note your Cisco uBR7246VXR. The show environment table command displays the temperature and voltage thresholds for each...
Page 156 System shutdown for chassis outlet 5 70C/158F Note Temperature ranges and values are subject to change. The example above is specific to the Cisco uBR7246, and you might notice a difference in the output for Note your Cisco uBR7246VXR. The show environment all command displays an extended report that includes temperature readings and voltage readings.
Page 157: Fan Failures
Flash Memory Card Fan Failures When the system power is on, the Cisco uBR7200 series router fans should be operational. The system continues to operate if a fan fails; however, if the air temperature exceeds a defined threshold, the system controller displays warning messages on the console terminal and, if the temperature exceeds the shutdown threshold, it shuts down the system.
Page 158: Removing A Flash Memory Card
5-2. Step 1 Grasp the card and pull it from the slot. Step 2 Place the card in an antistatic bag. Step 3 Figure 5-2 Removing a Flash Memory Card Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 159: Formatting A New Flash Memory Card
The flash memory card that shipped with your Cisco uBR7200 series universal broadband router contains the Cisco IOS software image you need to boot your router. In some cases, you might need to insert a new flash memory card and copy images or back up configuration files onto it. Before you can use a new flash memory card, you must format it.
Page 160: Copying A Bootable Image Onto A Flash Memory Card
To ensure access to a TFTP server, you must configure at least one network interface on your Note Cisco uBR7200 series router. For instructions on using this procedure, refer to the Cisco uBR7200 Series Software Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html...
Page 161: Copying Bootable Images Between Flash Memory Cards
Copying Bootable Images Between Flash Memory Cards As future releases of Cisco IOS images become available, you will receive these images as a file booted from a network server, a file on floppy disk, or a file on a flash memory card.
Page 162: Adding A New Image To The Flash Memory Card
To avoid potential problems when inserting spare flash memory cards in your Cisco uBR7200 series Note router, Cisco recommends that you reformat all of your flash memory cards on a Cisco uBR7200 series router running Cisco IOS Release 12.0(5)T1 or later during your regularly scheduled service times.
Page 163 To ensure access to a TFTP server, you must configure at least one network interface on your Note Cisco uBR7200 series router. For instructions on using this procedure, refer to the Cisco uBR7200 Series Software Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html...
Page 164 Chapter 5 Maintaining the Cisco uBR7200 Series Router Flash Memory Card Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 5-14 OL-5421-03...
Page 165: Chapter 6 Troubleshooting
Resolve the problem if possible or contact the Cisco Technical Assistance Center. Providing Information If you are contacting Cisco TAC or your customer service representative, provide the following information: • Date you received your Cisco uBR7200 series universal broadband router Chassis serial number •...
Page 166: Problem Solving With Subsystems
The first step in isolating a problem is to compare what the system is doing to what it should be doing. Usually a startup problem is caused by a single component, so first isolating the problem to a subsystem rather than troubleshooting every component in the entire system is more efficient. The Cisco uBR7200 series router subsystems are listed below.
Page 167: Identifying Startup Problems
The following section helps you isolate a problem to one of the subsystems and directs you to the appropriate troubleshooting section. Identifying Startup Problems When you start up the Cisco uBR7200 series router for the first time, observe the startup sequence described in the “Powering On the Cisco uBR7200 Series Router” section on page 3-25.
Page 168 “Troubleshooting Port Adapters” section on page 6-8. The enabled LED on the cable clock card (Cisco uBR7246VXR only) comes on when the network processing engine completes its initialization of the cable clock card for operation. The enable LED indicates that the cable clock card is receiving power and has been recognized by the network processing engine;...
Page 169: Power Subsystem
If a second power supply is available, and your Cisco uBR7200 series router has a redundant power supply bay, install the second power supply in the second bay if there is no power supply installed in that bay.
Page 170: Processor Subsystem
The processor subsystem is comprised of the I/O controller, the network processing engine, all port adapters, the clock card (Cisco uBR7246VXR), and all cable interface cards. The I/O controller and network processing engine are required system components. The system cannot operate unless the I/O controller and network processing engine are installed properly;...
Page 171: Troubleshooting The Network Processing Engine
Reseat the network processing engine in its slot. Restart the router. Verify that you are running a version of Cisco IOS software that supports the NPE you are using: Step 2 For the latest Cisco IOS software release information, refer to the Cisco uBR7200 series release notes at the following URL: http://www.cisco.com/en/US/products/hw/cable/ps2217/prod_release_notes_list.html...
Page 172: Troubleshooting Port Adapters
URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html If the router does not respond to the console input, contact Cisco TAC for instructions. Troubleshooting the Cisco Cable Clock Card (Cisco uBR7246VXR Only) Check the following to help isolate a problem with the clock card: Verify that the cable clock card enable LED is on.
Page 173: Troubleshooting Cable Interface Line Cards
Check to see if all cable interface card enabled LEDs are off. Step 2 If yes, verify that you are running a version of Cisco IOS software that supports the cable interface cards you are using. For the latest Cisco IOS software release information, refer to the Cisco uBR7200 series release notes, at the following URL: http://www.cisco.com/en/US/products/hw/cable/ps2217/prod_release_notes_list.html...
Page 174: About Verifying The Downstream Signal
If the Cable Modem Termination System (CMTS) has not been properly set up to support digital data, the Cisco uBR7200 series router might start up, but fail to support data transmission. You can use a router with diagnostic capabilities, such as the Cisco uBR900 series cable access routers, to verify the downstream signal originating from a Cisco uBR7200 series router.
Page 175 Evaluate the digitally modulated carrier’s constellation. Look for evidence of: – Gain compression – Phase noise I-Q (inphase and quadrature) imbalance – Coherent interference – Excessive noise – Clipping – Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 6-11 OL-5421-03...
Page 176 Chapter 6 Troubleshooting About Verifying the Downstream Signal Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 6-12 OL-5421-03...
Page 177: Appendix
A P P E N D I X Cisco uBR7200 Series Router Specifications This appendix provides information on the Cisco uBR7200 series universal broadband router physical and system specifications. Cisco uBR7246 Physical and System Specifications, page A-1 • Cisco uBR7246VXR Physical and System Specifications, page A-3 •...
Page 178: A P P E N D I X A Cisco Ubr7200 Series Router Specifications
EMI: FCC Class B, CSA Class B, EN60555-2, EN55022 Class B, VCCI Class 2, AS/NRZ 3548 Class B Immunity: IEC-1000-4-2, IEC-1000-4-3, IEC-1000-4-4, IEC-1000-4-5, IEC-1000-4-6, IEC-1000-4-11, IEC 1000-3-2 See Regulatory Compliance and Safety Information for the Cisco uBR7200 Series Universal Broadband Routers at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html 1. W = watts 2.
Page 179: Cisco Ubr7246Vxr Physical And System Specifications
Appendix A Cisco uBR7200 Series Router Specifications Cisco uBR7246VXR Physical and System Specifications Cisco uBR7246VXR Physical and System Specifications Table A-2 lists the Cisco uBR7246VXR physical specifications, power requirements, and software compatibility. Table A-2 Cisco uBR7246VXR Physical Specifications Description Specification...
Page 180: Cisco Ubr7246Vxr Physical And System Specifications
EMI: FCC Class B, CSA Class B, EN60555-2, EN55022 Class B, VCCI Class 2, AS/NRZ 3548 Class B Immunity: IEC-1000-4-2, IEC-1000-4-3, IEC-1000-4-4, IEC-1000-4-5, IEC-1000-4-6, IEC-1000-4-11, IEC 1000-3-2 See Regulatory Compliance and Safety Information for the Cisco uBR7200 Series Universal Broadband Routers at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html 1. W = watts 2.
Page 181: Appendix
Bandwidth, Data Rate, Data Rate, Data Rate, Nominal Data ksym/sec Mbps Mbps Mbps Rate, Mbps 0.20 0.32 ~0.3 0.64 ~0.6 0.40 0.64 ~0.6 1.28 ~1.2 0.80 1.28 ~1.2 2.56 ~2.3 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 182: Docsis 1.0 Transmission Characteristics
–30 dBc @ >1.5 microsecond Carrier hum modulation Not greater than –26 dBc (5%) Not longer than 25 μsec at a 10-Hz average rate Burst noise Signal level slope, 50-750 MHz 16 dB Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 183: Upstream Rf Channel Transmission Characteristics
1. Ingress avoidance or tolerance techniques may be used to ensure operation in the presence of time varying discrete ingress signals that could be as high as 0 dBc.(CableLabs1) 2. Amplitude and frequency characteristics sufficiently strong to partially or wholly mask the data carrier. 3. Impulse noise levels more prevalent at lower frequencies (<15 MHz). Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 184: Docsis 1.1 Transmission Characteristics
Maximum analog video carrier level at the cable modem input 17 dBmV Maximum number of analog carriers 1. Measured relative to a QAM signal that is equal to the nominal video level in the plant. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 185: Upstream Rf Channel Transmission Characteristics
The following tables provide information on the assumed RF channel transmission characteristics for EuroDOCSIS. Downstream RF Channel Transmission Characteristics Transmission is from the headend combiner to the cable modem input at the customer location. Measurement methods are defined in CENELEC 50083-7 documentation. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 186 3. For hum measurements above the normal downstream operating frequency band, a continuous-wave carrier is sent to the test frequency at the same level as the highest-frequency PAL/SECAM carrier. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 187: Electrical Input And Output
Level range (one channel) • DOCSIS: –15 dBmV to +15 dBmV • EuroDOCSIS: 43 to 73 dBmicroV for QAM-64 47 to 77 dBmicroV for QAM-256 Modulation type QAM-64 and QAM-256 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 188 3200 kHz Output impedance 75 ohms DOCSIS: >6 dB (5–42 MHz) Output return loss • EuroDOCSIS: >6 dB (5–65 MHz) • Connector F connector per ISO-169-24 (common with the input) Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 189: Appendix
60 percent braid second shield; nonbonded foil third shield; 40–42 percent braid fourth shield. Any of the three of the coaxial cables listed can be used to connect a Cisco cable interface line card to Note the HFC network;...
Page 190: Console And Auxiliary Port Cables And Pinouts
Console and Auxiliary Port Cables and Pinouts If you use different types of coaxial cable, the following problems can appear: Damage to Cisco uBR7200 series cable interface line card connectors—Cable interface line card • connectors are designed for 59-series or 6-series cable and connectors. Larger cables can damage the connectors.
Page 191: Console Port Cables And Pinouts
2 and 7, 3 and 6, 4 and 5, 5 and 4, 6 and 3, 7 and 2, 8 and 1). The wires of the straight-through cable are in the same sequence at both ends of the cable. If your cable was purchased from Cisco Systems, pin 8 is white. Note...
Page 192: Auxiliary Port Cables And Pinouts
• Use a Category 5 UTP straight-through cable when connecting to a PC or other Ethernet device. • Cisco Systems does not supply Category 3 or Category 5 UTP RJ-45 cables; these cables are available Note commercially. Identifying an RJ-45 Crossover Cable You can identify a crossover cable by comparing the two modular ends of the cable.
Page 193: Identifying An Rj-45 Straight-Through Cable
Figure C-4 RJ-45 Straight-Through Cable Identification Pin 1 Pin 1 If your cable was purchased from Cisco Systems, pin 1 is white. Note Table C-3 lists the pinouts for the two Fast Ethernet ports. Table C-3...
Page 194: Fiber-Optic Cables And Connectors
Class 1 laser product. Statement 1008 Warning Use a single-mode or multimode fiber-optic interface cable to connect your Cisco uBR7200 router to another router or switch. In general, multimode cables are gray or orange, and single-mode cables are yellow. For SONET or synchronous digital hierarchy (SDH) single-mode and multimode fiber-optic...
Page 195: Appendix
Some of these are included here for the benefit of cable operators that have or are deploying voice services on their cable networks. This appendix also includes standardized color codes for optical fiber. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 196: Tia/Eia Standards Information
In addition, the following relevant standards are available from Global Engineering Documents. FIBS PUB 175—Federal Building Standard for Telecommunication Pathways and Spaces • FIBS PUB 176—Residential and Light Commercial Telecommunications Wiring Standard • Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 197: Optical Fiber Color Codes
The scheme uses two color codes—one for large numbers of wires organized in pairs—and the other for smaller numbers of wires that can also be organized in pairs. Cisco recommends that you try to implement this wiring scheme whenever possible.
Page 198 Blue Black Black Orange Orange Black Black Green Green Black Black Brown Brown Black Black Slate Slate Black Yellow Blue Blue Yellow Yellow Orange Orange Yellow Yellow Green Green Yellow Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 199 Alternate Color-Code Scheme for Smaller Numbers of Wires Pair Number Wire Number Solid Color Stripe Color Alternate Color Pin Number White Blue Green Blue White White Orange Black Orange White Yellow White Green White Green White Blue Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 200 Appendix D Industry-Standard Wiring Plans Telephone Wire Color Codes Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 201: Appendix
Table E-2, and Table E-3 on page E-2 to compare analog television standards used around the world. Check these Web sites for more information. http://www.blondertongue.com http://www.jdsu.com http://developer.apple.com http://www.c-cor.com http://www.atxnetworks.com http://www.hometechanswers.com/video/standards.html Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 202: Standards Comparisons
1. This value applies to the combination N/PAL used in Argentina. Table E-3 Analog Television System RF Parameters B, B1, G D, D1, K Channel bandwidth at RF (MHz) B1, G=8 Frequency separation between 5.9996 visual and aural carrier (MHz) Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 203: Ntsc Cable Television Channels And Relative Frequencies
159.0 161.75 157.2625 161.7625 156.0078 160.5078 162.0-168.0 163.25 165.0 167.75 163.2625 167.7625 162.0081 166.5081 168.0-174.0 169.25 171.0 173.75 169.2625 173.7625 168.0084 172.5084 174.0-180.0 175.25 177.0 179.75 175.2625 179.7625 174.0087 178.5087 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 204 369.0 371.75 367.2625 371.7625 366.0183 370.5183 372.0-378.0 373.25 375.0 377.75 373.2625 377.7625 372.0186 376.5186 378.0-384.0 379.25 381.0 383.75 379.2625 383.7625 378.0189 382.5189 384.0-390.0 385.25 387.0 389.75 385.2625 389.7625 384.0192 388.5192 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 205 579.0 581.75 577.2625 581.7625 576.0288 580.5288 582.0-588.0 583.25 585.0 587.75 583.2625 587.7625 582.0291 586.5291 588.0-594.0 589.25 591.0 593.75 589.2625 593.7625 588.0294 592.5294 594.0-600.0 595.25 597.0 599.75 595.2625 599.7625 594.0297 598.5297 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 206 789.0 791.75 787.2625 791.7625 786.0393 790.5393 792.0-798.0 793.25 795.0 797.75 793.2625 797.7625 792.0396 796.5396 798.0-804.0 799.25 801.0 803.75 799.2625 803.7625 798.0399 802.5399 804.0-810.0 805.25 807.0 809.75 805.2625 809.7625 804.0402 808.5402 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 207 995.75 991.2625 995.7625 990.0495 994.5495 996.0-1002.0 997.25 999.0 1001.75 997.2625 1001.7625 996.0498 1000.5498 1. This column is for historical channel listings. 2. Aeronautical channels visual carrier frequency tolerance +/–5 kHz. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 208: Ntsc (M) Cable Television Frequencies For Japan
239.00 241.75 242.0-248.0 243.25 245.00 247.75 248.0-254.0 249.25 251.00 253.75 254.0-258.0 253.25 257.00 257.75 258.0-264.0 259.25 261.00 263.75 264.0-270.0 265.25 267.00 269.75 270.0-276.0 271.25 273.00 275.75 276.0-282.0 277.25 279.00 281.75 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 209 423.00 425.75 426.0-432.0 427.25 429.00 431.75 432.0-438.0 433.25 435.00 437.75 438.0-444.0 439.25 441.00 443.75 444.0-450.0 445.25 447.00 449.75 450.0-456.0 451.25 453.00 455.75 456.0-462.0 457.25 459.00 461.75 462.0-468.0 463.25 465.00 467.75 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 210: Pal/Secam Cable Television Channels And Relative Frequencies
168.25 173.75 174.0-181.0 175.25 180.75 181.0-188.0 182.25 187.75 188.0-195.0 189.25 194.5 195.0-202.0 196.25 201.75 202.0-209.0 203.25 208.75 209.0-216.0 210.25 215.75 216.0-223.0 217.25 222.75 223.0-230.0 224.25 229.75 230.0-237.0 231.25 236.75 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide E-10 OL-5421-03...
Page 211 431.25 436.75 438.0-446.0 439.25 444.75 446.0-454.0 447.25 452.75 454.0-462.0 455.25 460.75 462.0-470.0 463.25 468.75 470.0-478.0 471.25 476.75 478.0-486.0 479.25 484.75 486.0-494.0 487.25 492.7‘5 494.0-502.0 495.25 500.75 502.0-510.0 503.25 508.75 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide E-11 OL-5421-03...
Page 212 711.25 716.75 718.0-726.0 719.25 724.75 726.0-734.0 727.25 732.75 734.0-742.0 735.25 740.75 742.0-750.0 743.25 748.75 750.0-758.0 751.25 756.75 758.0-766.0 759.25 764.75 766.0-774.0 767.25 772.75 774.0-782.0 775.25 780.75 782.0-790.0 783.25 788.75 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide E-12 OL-5421-03...
Page 213 (MHz) (MHz) 790.0-798.0 791.25 796.75 798.0-806.0 799.25 804.75 806.0-814.0 807.25 812.75 814.0-822.0 815.25 820.75 822.0-830.0 823.25 828.75 830.0-838.0 831.25 836.75 838.0-846.0 839.25 844.75 846.0-854.0 847.25 852.75 854.0-862.0 855.25 860.75 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide E-13 OL-5421-03...
Page 214 Appendix E Frequency Allocation Tables PAL/SECAM Cable Television Channels and Relative Frequencies Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide E-14 OL-5421-03...
Page 215: Appendix
Comb generators, Cisco uBR kit (splitter, diplex filter, attenuators) Vecima Electronics http://www.vecima.com Cisco uBR kit (splitter, diplex filter, attenuators) White Sands Engineering, Inc. http://www.whitesandsengineering.com Coaxial jumpers 1 800-jumpers or 602 581-0331 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 216 3. Formerly General Instrument 4. Formerly Hewlett-Packard Test and Measurement Division. In addition, Cisco recommends the following manufacturers, websites, and product offerings for various measurement devices you will need to prepare and provision a North American cable headend site for two-way data.
Page 217: European Channel Plans
4. Asheridge Communications Limited is the European and Middle Eastern partner for White Sands Engineering and their URL is http://www.ashcatv.com. 5. Formerly Hewlett-Packard Test and Measurement Division. In addition, Cisco recommends the following manufacturers, websites, and product offerings for various measurement devices you will need to prepare and provision a European cable headend site for two-way data.
Page 218 2715 Sunrise Telecom http://www.sunrisetelecom.com/broadband AT2000R Vector Signal Analyzers Agilent http://www.tm.agilent.com Agilent 89411A 1. Formerly Hewlett-Packard Test and Measurement Division. 2. Formerly Hukk Engineering and Avantron. 3. Formerly Tektronics DMA division. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 219: Appendix
A P P E N D I X Site Log A site log provides a historical record of all actions relevant to the Cisco uBR7200 series universal broadband router operation and maintenance. Keep your site log in a common place near the chassis where anyone who performs tasks has access to it.
Page 220 Appendix G Site Log Table G-1 Site Log Date Description of Action Performed or Symptom Observed Initials Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Page 221: G L O S S A R Y
Automatic gain control A status condition that shows that a module or port is experiencing an abnormal operating condition. Alarm See also Critical alarm, Major alarm, and Minor alarm. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide GL-1 OL-5421-03...
Page 222 Now called the ITU-T. (See ITU-T.) Common channel signaling. Circuit emulation service. The color portion of a video signal. Chrominance Cable modem termination system, such as the Cisco uBR7246VXR router. CMTS Carrier-to-noise ratio. C/N ratio Cisco Network Registrar.
Page 223 MTU. Existing 10Base-T applications and network management tools can be used on Fast Ethernet networks. The Fast Ethernet specification is based on an extension to the IEEE 802.3 specification. Forward error correction. Frame error rate. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide GL-3 OL-5421-03...
Page 224 Extensions to the IEEE 802.3 standard specify implementations for Fast Ethernet and gigabit Ethernet. Incremental Related Carrier. Defined in DOCSIS specification, IS-6, North American frequency plans. International Telecommunication Union-Telecommunications Standardization Sector. ITU-T Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide GL-4 OL-5421-03...
Page 225 Covers spatial, hardware, crafts person interface, thermal, fire resistance, handling and transportation, earthquake and vibration, airborne contaminants, grounding, acoustical noise, illumination, EMC, and ESD requirements. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide GL-5 OL-5421-03...
Page 226 Quaternary phase shift keying. A compression technique used in modems and wireless networks. QPSK 59-series headend coaxial cable. RG-59 Request to send. Synchronous Digital Hierarchy. Synchronous dynamic random-access memory. SDRAM Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide GL-6 OL-5421-03...
Page 227 Digital WAN carrier facility. T3 transmits DS3-formatted data at 44.736 Mbps through the telephone switching network. Technical Assistance Center. Time of day. Trivial File Transfer Protocol. TFTP Telephone-network voltage. Universal broadband router. Unshielded twisted-pair. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide GL-7 OL-5421-03...
Page 228 A test point that is established by inserting a test signal of known amplitude into a fiber node and then X-level test point measuring the output level amplitude at the headend optical receiver. Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide GL-8 OL-5421-03...
Page 229: I N D E X
Cisco uBR7246 description 4-post rack Cisco uBR7246 VXR description how to install 3-6, 3-7, 3-8, 3-10 clearance 2-18 requirements Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-1 OL-5421-03...
Page 230 DOCSIS 1.0 parameters digital signal 4-52 DOCSIS 1.1 parameters rf data downstream RF signal 4-16 complete configuration example 4-15 typical cable headend 4-2, 4-3 connecting and configuring 4-4 to 4-16 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-2 OL-5421-03...
Page 231 1-2, 1-23, 1-24, 1-25 handles, power supply 1-22 Fast Ethernet 1-6, 1-16, C-4 handling fiber-optic laser receivers 2-13 cable interface cards cards field notices network processing engine field-replaceable units, see FRUs 1-12 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-3 OL-5421-03...
Page 232 4-17 to 4-19 output level impulse noise kits ingress noise insertion loss 4-15 installation analyze the RF laser transmitter 4-15 before you begin Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-4 OL-5421-03...
Page 233 RF channel characteristics, EuroDOCSIS amplified thermal passive loss 4-15 electrical pass-through 2-15 funneling PCI bus impulse phase noise 4-12, 4-14 ingress ping 4-37, 4-38, 4-39 outside plant 4-40 pinouts C-3, C-4 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-5 OL-5421-03...
Page 234 Cisco uBR7246 rack-mount kit 2-11, 3-2 current rating 1-22 radio frequency interference (RFI) 2-16 filler panel RADIUS dial server 2-14 LEDs 1-22, 6-3 rate, symbol physical description 1-21 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-6 OL-5421-03...
Page 235 DC power telco-type equipment racks 2-17, 3-1 environment telephone jacks equipment racks temperature, internal chassis 2-17 general precautions test points plant wiring calibrating 2-16 4-33 power considerations HFC network 4-32 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-7 OL-5421-03...
Page 236 4-37 to 4-40 weight 1-3, 1-4 connecting and configuring 4-30 to 4-33 wiring measuring RF signal 4-34 to 4-40 interference 2-16 upstream data burst 4-40, 4-42 optical color codes plant 2-16 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-8 OL-5421-03...
Page 237 Index telephone telephone color codes telephone station, terminal color codes X-level test points 4-32 zero-span 4-40 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-9 OL-5421-03...
Page 238 Index Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide IN-10 OL-5421-03...

This manual is also suitable for:

Ubr7200 series

Cisco 7246 - uBR Router Hardware Installation Manual

Chapter 1 Cisco Ubr7200 Series Overview

CHAPTER 2 Preparing the Cisco Ubr7200 Series Router for Installation

Safety Recommendations

Site Requirements

Required Network Information

Installation Tools

Rack-Mount and Cable-Management Kit

Equipment Required to Verify Your Plant's RF Setup

Shipping Container Contents

Provisioning the Cable Headend

Site Preparation Checklist

Component Checklists

CHAPTER 3 Installing the Cisco Ubr7200 Series Router

Cisco Ubr7200 Series Router Installation Checklist

Cisco Ubr7200 Series Chassis Rack-Mounting Options

Installing the Brackets on the Chassis

Installing the Chassis in a Workbench or Tabletop Environment

Cabling

Console and Auxiliary Port Connection Equipment

Connecting Power

Powering on the Cisco Ubr7200 Series Router

CHAPTER 4 Connecting the Cisco Ubr7200 Series Router to the Cable Headend

Two-Way Data Headend Architecture

One-Way Data Headend Architecture

RF and Digital Data Overview

Connecting and Configuring the Downstream

Measuring the Downstream RF Signal

Chapter 5 Maintaining the Cisco Ubr7200 Series Router

Chapter 6 Troubleshooting

Appendix

Cisco Ubr7200 Series Router Specifications

Appendix

RF Specifications

Appendix B RF Specification

Appendix

Cable Specifications

Appendix

Industry-Standard Wiring Plans

Appendix

Frequency Allocation Tables

Appendix

Manufacturers for Headend Provisioning Requirements

Appendix

Site Log

G L O S S a R y

I N D E X

Quick Links

Troubleshooting

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Summary of Contents for Cisco 7246 - uBR Router