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Manual Cisco Systems uBR7246

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  • Cisco Systems uBR7246 - page 1

    Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-133 Configur ing Cisco uBR7246 Univ ersal Broadband Router F eatures Cisco uBR7246 universal broadband features enab le the Cisco uBR7246 universal broadband router to communicate with a hybrid f iber coaxial (H FC) cable network via a Cisco MC11 cable modem card. Cisco MC11 cable m ...

  • Cisco Systems uBR7246 - page 2

    VC-134 Voice, Video, and Home Applications Confi guration Guide Figure 38 T opology for uBR 7246 Universal Broadband Internet ATM, 100BT, 10BT 100BT Analog TV signals Digital TV signals Upconverter ISP DS-RF 54-860 Mhz Fiber Transceiver 80 km Fiber node (Telephone pole, underground box) Two-way distribution amplifier 1000 ft Drop box Tap Cable mode ...

  • Cisco Systems uBR7246 - page 3

    Description of Cisco uBR7246 Cable Router Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-135 Description of Cisco uBR7246 Cable Router As shown in Figure 38, the C isco uBR7246 serves as an interface between a W AN backbone and an HFC cable plant. T ypically installed at a CA TV headend, the Cisco uBR7246 is often located with t ...

  • Cisco Systems uBR7246 - page 4

    List of Terms VC-136 Voice, Video, and Home Applications Confi guration Guide • Providing a uni versal platform for deployment of both current and future m odem technologies via modular upgrades while protectin g the operator’ s in vested capital. • Lev eraging Cisco’ s industry-standard routing ha rdware and Cisco IOS software to deliv e r ...

  • Cisco Systems uBR7246 - page 5

    List of Terms Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-137 Prerequisite T asks Before you can configure Cisco uBR7246 univ ersal broadban d router features, you must first: • Make sure that your current network is designed to support broadband tran smission. At the very least, your network must inclu de the following: ? ...

  • Cisco Systems uBR7246 - page 6

    Configure the Downstream Cable Interface VC-138 Voice, Video, and Home Applications Confi guration Guide • Install at least one Cisco MC11 cable modem card in the appropriate slot of Cisco uBR72 46 chassis. For information about installi ng the Cisco MC11 cable modem card, refer to the Cisco uBR7246 Uni versal Br oadband Rout er Cable Modem Card ...

  • Cisco Systems uBR7246 - page 7

    Set the Downs tream Cent er Frequency Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-139 Note The default v alues for the commands used in th ese conf iguration steps are, in most cases, adequate to configure the Cisco uBR7246. Set the Downstream Center F requency Y ou need to set the downstream frequenc y of your RF output to c ...

  • Cisco Systems uBR7246 - page 8

    Configure the Downstream Cable Interface VC-140 Voice, Video, and Home Applications Confi guration Guide T roub leshooting Tips If you are having trouble: • Make sure the cable connections are not loose or disconnected. • Make sure the cable modem card is f irmly seated in its Cisco uBR7246 chassis slot. • Make sure that you have entered the ...

  • Cisco Systems uBR7246 - page 9

    Set the Downstream MPEG Framin g Format (Annex A or Annex B) Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-141 Set the Downstream MPEG F rami ng F or mat (Anne x A or Anne x B) The MPEG framing format must be compatible with the downstream symbol rate you set. Set the MPEG framing format for a down stream port on a cable modem ...

  • Cisco Systems uBR7246 - page 10

    Configure the Downstream Cable Interface VC-142 Voice, Video, and Home Applications Confi guration Guide T o set the downstream modulation, use the follo wing command in cable interface conf iguration mode: V alidation Tips T o verify the downstream modulatio n setting, enter the show contr ollers cable command for the downstream port that you hav ...

  • Cisco Systems uBR7246 - page 11

    Activate the Downstream Carrier Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-143 T roub leshooting Tips If you are having trouble: • Make sure the cable connections are not loose or disconnected. • Make sure the cable modem card is f irmly seated in its Cisco uBR7246 chassis slot. • Make sure that you have entered the co ...

  • Cisco Systems uBR7246 - page 12

    Configure the Upstream Cable Interface VC-144 Voice, Video, and Home Applications Confi guration Guide Configure the Upstream Cable Interface The next step is to configure the upstream cable interface. In this case, upstream refers to the data flow from a cable modem to the Cisco MC11 modem card in a Cisco uBR7246. The user’ s cable modem sends a ...

  • Cisco Systems uBR7246 - page 13

    Set the Upstream Input Power Level Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-145 V alidation Tips T o verify the curr ent value of the upstream freque ncy , enter the show contr ollers cable command for the upstream p ort that you ha ve just conf igured: router# show controllers cable 6/0 u0 Cable6/0 Upstream 0 is up Freque ...

  • Cisco Systems uBR7246 - page 14

    Configure the Upstream Cable Interface VC-146 Voice, Video, and Home Applications Confi guration Guide V alidation Tips T o verify the current value of the upstream input power level, enter the show controllers cable command for the upstream port that you have just configured: router# show controllers cable 6/0 u0 Cable6/0 Upstream 0 is up Frequenc ...

  • Cisco Systems uBR7246 - page 15

    Activate the Upstream Scrambler Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-147 V alidation Tips T o verify if FEC is a ctiv ated or deactiv ated, enter the command more system:ru nning-conf ig and look for the cable interface conf iguration inform ation. The following is an excerpt from the mor e system:running-conf ig comma ...

  • Cisco Systems uBR7246 - page 16

    Configure the Upstream Cable Interface VC-148 Voice, Video, and Home Applications Confi guration Guide V alidation Tips T o verify if the upst ream scramble r is activ ated, enter the command more system:runn ing-conf ig and look for the cable interface conf iguration information. The follo wing is an excerpt from the more sys tem:running-conf ig c ...

  • Cisco Systems uBR7246 - page 17

    Configure and Activate Baseline Privacy Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-149 V alidation Tips T o verify if the upstream ports are activ ated or deacti vated, enter the sho w interface cable command for the upstream p ort that you ha ve just conf igured: router# show interface cable 6/0 Cable6/0 is up, line protoco ...

  • Cisco Systems uBR7246 - page 18

    Configure and Activat e Baseline Privacy VC-150 Voice, Video, and Home Applications Confi guration Guide The configuration and acti v ation of baseline priv acy depend on each cable operator’ s physical plant. T o configure and acti vate base line pr i vacy , perform the follo wing tasks: • Configure K ek Encrypti on K ey Pri vacy • Configure ...

  • Cisco Systems uBR7246 - page 19

    Activate Baseline Priva cy Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-151 V alidation Tips T o verify the tek life-time or grace-time v alues that ha ve been set, enter the show cable pri vacy tek command: router# show cable privacy tek Configured TEK life-time value = 56000 T roub leshooting Tips If you are having trouble, ...

  • Cisco Systems uBR7246 - page 20

    Configure and Activate Frequency Agility VC-152 Voice, Video, and Home Applications Confi guration Guide Note The cable interf ace will not oper ate until you either cr eate and conf igure a spectrum group or set a fix ed upstream frequency . From the interface configuration prompt, an interface is assigned membership in a spectrum group. From the ...

  • Cisco Systems uBR7246 - page 21

    Configure and Activate Spectrum Groups Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-153 Configure and Activ ate Spectr um Groups After you create a spectrum group, you need to conf igure a list of upstream frequencies and nominal po wer lev els that each spectrum group can use when an upstream frequency change is necessary . E ...

  • Cisco Systems uBR7246 - page 22

    Activate Host-to-Host Co mmunication (Proxy ARP) VC-154 Voice, Video, and Home Applications Confi guration Guide Activ ate Address Resolution Protocol Requests T o activ ate ARP requests, use the following co mmand in cable interface configuration mode: V alidation Tips T o verify if ARP has been activ ated, enter the command more system:ru nning-c ...

  • Cisco Systems uBR7246 - page 23

    Activate Proxy ARP Requests Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-155 Activ ate Pro xy ARP Requests T o activ ate proxy ARP for host-to-host communi cations, use the following command in cable interface conf iguration mode: V alidation Tips T o verify if proxy ARP ha s been acti vated or deact i vated, enter the command ...

  • Cisco Systems uBR7246 - page 24

    Set Optional IP Parameter s VC-156 Voice, Video, and Home Applications Confi guration Guide Activ ate IP Multicast Echo Y ou can activ ate upstream IP multicast echo so th at the Cisco uBR7246 can echo multicast packets. The default is “on” (IP multicast echo is acti vated). T o acti vate IP multicast echo, use the following command in cable in ...

  • Cisco Systems uBR7246 - page 25

    Manage Cable Modems on the HFC Network Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-157 V alidation Tips T o verify if IP broadcast echo has been acti v ated or d eactiv ated, enter the command more system:running-conf ig and look for the cable interface config uration information as sho wn in this command output excerpt: rout ...

  • Cisco Systems uBR7246 - page 26

    Manage Cable Mode ms on the HFC Netwo rk VC-158 Voice, Video, and Home Applications Confi guration Guide T o activ ate cable modem authentication, use th e follo wing command from the cable interface configuration mode: V alidation Tips T o verify if cable modem authentication has b een activ ated or deactiv ated, enter the command more system:runn ...

  • Cisco Systems uBR7246 - page 27

    Activate Cable Mode m Insertion Interval Configuring Cisco uBR7246 Uni versal Broadband Ro uter Features VC-159 V alidation Tips T o verify that cable mo dem upst ream verif ication has been acti v ated or deacti vated, enter the command more system:running-conf ig and look for the cable interf ace conf iguration information. If cable modem upstrea ...

  • Cisco Systems uBR7246 - page 28

    Universal Broadband Featur es Configuration Example VC-160 Voice, Video, and Home Applications Confi guration Guide V alidation Tips T o verify that a cab le modem insertio n in terval has been set, enter the command mor e system:running-conf ig and look for the cable interface config uration information as sho wn in this command output excerpt: ro ...

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