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Cisco Systems uBR7246 manual

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Buen manual de instrucciones

Las leyes obligan al vendedor a entregarle al comprador, junto con el producto, el manual de instrucciones Cisco Systems uBR7246. La falta del manual o facilitar información incorrecta al consumidor constituyen una base de reclamación por no estar de acuerdo el producto con el contrato. Según la ley, está permitido adjuntar un manual de otra forma que no sea en papel, lo cual últimamente es bastante común y los fabricantes nos facilitan un manual gráfico, su versión electrónica Cisco Systems uBR7246 o vídeos de instrucciones para usuarios. La condición es que tenga una forma legible y entendible.

¿Qué es un manual de instrucciones?

El nombre proviene de la palabra latina “instructio”, es decir, ordenar. Por lo tanto, en un manual Cisco Systems uBR7246 se puede encontrar la descripción de las etapas de actuación. El propósito de un manual es enseñar, facilitar el encendido o el uso de un dispositivo o la realización de acciones concretas. Un manual de instrucciones también es una fuente de información acerca de un objeto o un servicio, es una pista.

Desafortunadamente pocos usuarios destinan su tiempo a leer manuales Cisco Systems uBR7246, sin embargo, un buen manual nos permite, no solo conocer una cantidad de funcionalidades adicionales del dispositivo comprado, sino también evitar la mayoría de fallos.

Entonces, ¿qué debe contener el manual de instrucciones perfecto?

Sobre todo, un manual de instrucciones Cisco Systems uBR7246 debe contener:
- información acerca de las especificaciones técnicas del dispositivo Cisco Systems uBR7246
- nombre de fabricante y año de fabricación del dispositivo Cisco Systems uBR7246
- condiciones de uso, configuración y mantenimiento del dispositivo Cisco Systems uBR7246
- marcas de seguridad y certificados que confirmen su concordancia con determinadas normativas

¿Por qué no leemos los manuales de instrucciones?

Normalmente es por la falta de tiempo y seguridad acerca de las funcionalidades determinadas de los dispositivos comprados. Desafortunadamente la conexión y el encendido de Cisco Systems uBR7246 no es suficiente. El manual de instrucciones siempre contiene una serie de indicaciones acerca de determinadas funcionalidades, normas de seguridad, consejos de mantenimiento (incluso qué productos usar), fallos eventuales de Cisco Systems uBR7246 y maneras de solucionar los problemas que puedan ocurrir durante su uso. Al final, en un manual se pueden encontrar los detalles de servicio técnico Cisco Systems en caso de que las soluciones propuestas no hayan funcionado. Actualmente gozan de éxito manuales de instrucciones en forma de animaciones interesantes o vídeo manuales que llegan al usuario mucho mejor que en forma de un folleto. Este tipo de manual ayuda a que el usuario vea el vídeo entero sin saltarse las especificaciones y las descripciones técnicas complicadas de Cisco Systems uBR7246, como se suele hacer teniendo una versión en papel.

¿Por qué vale la pena leer los manuales de instrucciones?

Sobre todo es en ellos donde encontraremos las respuestas acerca de la construcción, las posibilidades del dispositivo Cisco Systems uBR7246, el uso de determinados accesorios y una serie de informaciones que permiten aprovechar completamente sus funciones y comodidades.

Tras una compra exitosa de un equipo o un dispositivo, vale la pena dedicar un momento para familiarizarse con cada parte del manual Cisco Systems uBR7246. Actualmente se preparan y traducen con dedicación, para que no solo sean comprensibles para los usuarios, sino que también cumplan su función básica de información y ayuda.

Índice de manuales de instrucciones

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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: ?[...]

  • Página 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 [...]

  • Página 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[...]

  • Página 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 [...]

  • Página 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 [...]

  • Página 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 [...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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, [...]

  • Página 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 [...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]

  • Página 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[...]