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Product Numbers: UBR-MC16E, UBR-MC16E=, UBR-MC16S, UBR-MC16S=, UBR-MC16C, UBR-MC16C=, UBR-MC16B, UBR-MC16B=, UBR-MC14C, UBR-MC14C=, UBR-MC12C, UBR-MC12C=, UBR-MC11C, UBR-MC11C=, UBR-MC11, UBR-MC11=
This document describes installing Cisco cable modem cards in a Cisco uBR7200 series universal broadband router: the Cisco uBR7246 VXR, the Cisco uBR7246, and the Cisco uBR7223.
This document contains the following sections:
Cisco cable modem cards, together with IF-to-RF upconverters, serve as the radio frequency (RF) interface between the cable headend and Data Over Cable Service Interface Specifications (DOCSIS)-compliant cable modems or EuroDOCSIS-compliant cable modems and set-top boxes (STBs). Cisco cable modem cards separate downstream output and upstream input cable interfaces on the Cisco uBR7200 series universal broadband router to enable downstream and upstream signal combining and splitting arrangements.
Cisco cable modem cards can be used in both 6 MHz National Television Systems Committee (NTSC) standard and 8 MHz Phase Alternating Line (PAL) and Systeme Electronique Couleur Avec Memoire (SECAM) standard channel environments.
Downstream ports on Cisco cable modem cards are labeled DS. Upstream ports are labeled US0 through US5 as applicable to the card. Table 1 maps the cable modem card's interfaces and physical port names.
| Cable Modem Card | Interface | Port Names |
|---|---|---|
MC11 | Cable N/0 | DS, US0 |
MC12 | Cable N/0 | DS, US0, US1 |
MC14 | Cable N/0 | DS, US0, US1, US2, US3 |
MC16 | Cable N/0 | DS, US0, US1, US2, US3, US4, US5 |
 | Caution Downstream and upstream ports contain RF-style F-connectors. Contrary to existing Cisco conventions, the downstream and upstream ports are considered a single logical interface, not separate interfaces. |
Cisco cable modem cards can be configured in a number of different upstream combinations based on the card used, your cable network, and the anticipated subscription and service levels. Table 2 shows the DOCSIS data rates and modulation schemes.
| Upstream Channel Width | Modulation Scheme | Baud Rate Sym/sec | Raw Bit Rate Mbit/sec |
|---|---|---|---|
3.2 MHz | 16 QAM | 2.56 M | 10.24 |
1.6 MHz | 16 QAM | 1.28 M | 5.12 |
800 kHz | 16 QAM | 640 K | 2.56 |
400 kHz | 16 QAM | 320 K | 1.28 |
200 kHz | 16 QAM | 160 K | 0.64 |
The following sections describe the Cisco cable modem cards currently available.
The MC11 cable modem cards feature one downstream modulator and one upstream demodulator. Two different hardware versions of this cable modem card currently exist.
The MC11 FPGA supports 64 Quadrature Amplitude Modulation (QAM) at 27 Mbps downstream and Quadrature Phase Shift Keying (QPSK) at 1.280 kbps upstream default data rates. The card output is +32 dBmV +/- 2 dB.
The MC11C supports 256 QAM at 40 Mbps downstream and 16 QAM at 5 Mbps upstream default data rates. The MC11C supports all DOCSIS upstream channel widths described in Table 2 and the card output is +42 dBmV +/- 2 dB.
MC12C features one downstream modulator and two upstream demodulators. The card supports 256 QAM at 40 Mbps downstream and 16 QAM at 5 Mbps upstream default data rates. The MC12C supports all DOCSIS upstream channel widths described in Table 2 and the card output is +42 dBmV +/- 2 dB.
MC14C features one downstream modulator and four upstream demodulators. The card supports 256 QAM at 40 Mbps downstream and 16 QAM at 5 Mbps upstream default data rates. The MC14C supports all DOCSIS upstream channel widths described in Table 2 and the card output is +42 dBmV +/- 2 dB.
The MC16 cable modem cards feature one downstream modulator and six upstream demodulators. Four different hardware versions of this cable modem card currently exist.
The MC16B supports 64 QAM at 27 Mbps downstream and QPSK at 2.56 Mbps upstream default data rates. In QPSK upstream operation, the MC16B supports all DOCSIS upstream channel widths described in Table 2. In 16 QAM upstream operation, the MC16B excludes support for two of the five upstream symbol rates---2.56 M and 1.28 M. Similarly, in 256 QAM downstream operation, the MC16B excludes support for the same two DOCSIS symbol rates---2.56 M and 1.28 M. The MC16B cable modem card output is +32 dBmV +/- 2 dB.
The MC16C supports 256 QAM at 40 Mbps downstream and 16 QAM at 5 Mbps upstream default data rates. The MC16C supports all DOCSIS upstream channel widths described in Table 2 and the card output is +42 dBmV +/- 2 dB.
The MC16E supports 256 QAM at 40 Mbps downstream and 16 QAM at 5 Mbps upstream default data rates. The MC16E supports all upstream channel widths described in Table 2 and the card output is +40 dBmV +/- 2 dB. The MC16E supports the ITU J.83 Annex A physical layer and the proposed EuroDOCSIS standard (ECR RFI-R-98036) from Cable Labs.
The MC16E is designed to provide two-way data over cable between a headend and EuroDOCSIS-compliant cable modems and STBs in the 5 to 65 MHz downstream and 85 to 860 MHz upstream European PAL/SECAM 8 MHz channel environments.
The MC16S consists of a motherboard (based on the MC16C cable modem card) and an additional "piggy-back" spectrum management card. The MC16S supports 256 QAM at 40 Mbps downstream and 16 QAM at 5 Mbps upstream default data rates. The MC16S supports all DOCSIS upstream channel widths described in Table 2 and the card output is +42 dBmV +/- 2 dB. In addition, the MC16S features advanced spectrum management capabilities made possible by hardware and software enhancements.
The advanced spectrum management capabilities of the MC16S include the ability to hierarchically scan portions of the upstream spectrum for clean channels of varying widths. For more specific information on MC16S capabilities and programming, refer to the Cisco uBR7200 Series Software Configuration Guide.
The MC16S spectrum management daughter card is able to sample the 5 to 42 MHz upstream frequency spectrum and initiate frequency hops based on that information. When a threshold percentage of "offline" cable modems has been reached, the spectrum management card takes a snapshot of the available upstream spectrum and then passes this information to the Cisco IOS software, where it is analyzed for indications of significant ingress and/or impulse noise. From this analysis, the Cisco IOS software draws informed conclusions regarding the "cleanest" portion(s) of the upstream frequency spectrum and automatically initiates a frequency hop to a clean upstream channel. The user-defined threshold value is specified by a command in the configuration file of the Cisco uBR7200 series router. For more information, refer to the Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide.
This section describes the type and behavior of LEDs on Cisco cable modem cards.
Table 3 describes the various LEDs and their functions.
| LED | Function |
|---|---|
Enabled | Indicates that the cable modem card is on, receiving DC power from the router midplane, and enabled for operation. This LED remains on during normal operation of the Cisco uBR7200 series. This LED remains lit as long as the Cisco uBR7200 series' midplane recognizes that there is a cable modem card installed in the router. |
Upstream | Indicates that the upstream path is active. Each upstream port has an upstream LED. This LED remains lit as long as the relative upstream interface has been activated. |
MGR ACT | Indicates the MC16S spectrum management card has initiated an upstream frequency hop from a potentially "noisy" channel to a cleaner channel. This LED remains lit as long as a spectrum group has been configured and activated on the relative upstream interface. |
Downstream | Indicates that the downstream path is active. The downstream LED is to the right of the downstream port. This LED remains lit as long as the relative downstream interface has been activated. |
The following sections describe the procedures necessary to remove and install Cisco cable modem cards in the Cisco uBR7200 series universal broadband router. In addition, this section includes safety and ESD-prevention guidelines to help you avoid injury to yourself and damage to the equipment.
Following are safety guidelines that you should take into consideration when working with any equipment that connects to electrical power or telephone wiring.
 | Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device. |
Waarschuwing Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information (Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is ingesloten.
Varoitus Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien varoitusten käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).
Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements figurant dans cette publication, consultez le document Regulatory Compliance and Safety Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet appareil.
Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information (Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät geliefert wurde.
Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che accompagna questo dispositivo.
Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble levert med denne enheten.
Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições Reguladoras) que acompanha este dispositivo.
¡Advertencia! Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. Para ver una traducción de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and Safety Information (Información sobre seguridad y conformidad con las disposiciones reglamentarias) que se acompaña con este dispositivo.
Varning! Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.
Follow these basic guidelines when working with any electrical equipment:
Electrostatic discharge (ESD) damages equipment and impairs electrical circuitry. ESD occurs when printed circuit boards are improperly handled and results in complete or intermittent failures.
Cisco cable modem cards consist of a printed circuit board that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors, and a handle are integral components of the carrier. Handle cable modem cards by their carrier edges and handles; never touch the printed circuit board or connector pins.
Figure 11 shows the location of a printed circuit board when it is installed on a Cisco uBR7200 series cable modem card metal carrier. Do not touch the printed circuit board when handling either component.
Although the metal carrier helps to protect the printed circuit boards from ESD, wear a preventive antistatic strap whenever handling cable modem cards. Ensure that the strap makes good skin contact and connect the strap's clip to an unpainted chassis surface to safely channel unwanted ESD voltages to ground.
If no wrist strap is available, ground yourself by touching the metal part of the chassis.
| Caution Be sure to tighten the captive installation screws on the cable modem cards (use a number 2 Phillips screwdriver). These screws prevent accidental removal, provide proper grounding for the router, and help to ensure that the cable modem cards are properly seated in the router midplane. |
Following are guidelines for preventing ESD damage:
| Caution Periodically check the resistance value of the antistatic strap. The measurement should be within the range of 1 and 10 megohm (Mohm). |
This product can perform encryption (if the baseline privacy feature is included in your particular software image) and is regulated for export by the U.S. Government. Following is specific information regarding compliance with U.S. export laws and regulations for encryption products:
The following sections explain how to remove and replace or install a cable modem card in the Cisco uBR7200 series.
| Caution When "hot swapping" a cable modem card with a different type of cable modem card (for example, an MC11 FPGA with an MC11C, or an MC16B with an MC16C), you may have to reconfigure the interfaces. Refer to the Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide for more specific information regarding online insertion and removal (OIR). |
The following procedure explains how to remove a cable modem card from the Cisco uBR7200 series:
Step 1 Attach an ESD-preventive wrist strap between you and an unfinished chassis surface.
Step 2 Unscrew the captive installation screws on the front of the cable modem card.
(See Figure 12.)
Step 3 Grasp the handle on the cable modem card and carefully pull the cable modem card from the midplane, about halfway out of its slot. If you are removing a blank cable modem card, pull the blank cable modem card all the way out of the chassis slot.
Step 4 With the cable modem card halfway out of the slot, disconnect all coaxial cables from the front of the cable modem card.
Step 5 After disconnecting the cables, pull the cable modem card from its chassis slot.
| Caution Always handle the cable modem card by the carrier edges and handle; never touch the cable modem card's components or connector pins. (See Figure 11.) |
Step 6 Place the cable modem card on an antistatic surface with its components facing upward, or in a static shielding bag. If the cable modem card will be returned to the factory, immediately place it in a static shielding bag.
This completes the procedure for removing a cable modem card from the Cisco uBR7200 series.
Complete the following steps to install or replace a cable modem card in the Cisco uBR7200 series:
Step 1 Attach an ESD-preventive wrist strap between you and an unfinished chassis surface.
Step 2 Use both hands to grasp the cable modem card by its metal carrier edges and position the cable modem card so that its components face upward. (See Figure 13.)
Step 3 Align the left and right edges of the cable modem card printed circuit board between the guides in the cable modem card slot. (For the Cisco uBR7246 and Cisco uBR7246 VXR, see Figure 13. For the Cisco uBR7223, see Figure 14.)
Step 4 With the metal carrier aligned in the slot guides, gently slide the cable modem card halfway into the cable modem card slot.
Step 5 With the cable modem card halfway in the slot, connect all required coaxial cables to the front of the cable modem card.
Step 6 After connecting all required coaxial cables, carefully slide the cable modem card all the way into the slot until you feel the card's connectors mate with the midplane.
Step 7 Tighten the captive installation screws on the cable modem card. (See Figure 12.)
This completes the procedure for installing a cable modem card in the Cisco uBR7200 series.
This section is designed to help you decide whether or not you need a 10-dB attenuator in your downstream IF configuration and describes the necessary installation steps.
The MC11C, MC12C, MC14C, MC16C, and MC16S cable modem cards have been engineered to deliver +42 dBmV IF output power to the IF-to-RF upconverter at the cable headend. This power rating is 10-dB greater than earlier MC11 FPGA and MC16B cable modem cards, which delivered +32 dBmV output power. Without an attenuator in your downstream configuration, you could overload the upconverter input, causing an unacceptably low signal-to-noise ratio and possible interference with adjacent channels. However, not all Cisco recommended IF-to-RF upconverters need this attenuator added to their downstream path. Please refer to the following section, "Do You Need a 10-dB Attenuator in Your Downstream Configuration?," to determine whether or not your system requires such attenuation.
The following table lists the industry IF-to-RF upconverters Cisco recommends in the downstream configuration at your cable headend station:
| IF-to-RF Upconverter Vendor and Model Number | Need 10-dB Attenuator? |
|---|---|
General Instrument C6U | Yes |
General Instrument C8U | Yes |
Wavecom MA4040B | Yes |
Wavecom UC4040B | Yes |
Scientific Atlanta Continuum 9860 | No |
Scientific Atlanta Continuum 9861 | No |
Barco Gemini | No |
If you deduce, from the information provided in the table above, that you do not need to add the optional 10-dB attenuator to your downstream IF configuration, disregard this discussion and proceed to the "Basic Cisco IOS Configuration Commands" section. Otherwise, proceed to the next section, "Adding a 10-dB Attenuator to Your Downstream Configuration."
Use the following steps to add a 10-dB attenuator to your downstream configuration:
Step 1 Remove the coaxial cable originating at your cable modem card from the downstream input F-connector on your IF-to-RF upconverter.
Step 2 Install the 10-dB attenuator on the input F-connector on your IF-to-RF upconverter.
Step 3 Reattach the coaxial cable originating at your cable modem card to the female end of the 10-dB attenuator to restore your downstream IF link.
Figure 15 displays a simplified example of the downstream path between your cable modem card and IF-to-RF upconverter with the optional 10-dB attenuator positioned at your upconverter's downstream IF input.
In order to effectively configure your Cisco cable modem card, you need to ensure that you have the minimum required software release to support it. Table 4 summarizes the minimum required Cisco IOS release image necessary to support each type of Cisco cable modem card.
| Cable Modem Card | Minimum Cisco IOS Release Images |
|---|---|
MC11 FPGA | Cisco IOS Release 11.3(7)NA or later version of Cisco IOS Release 11.3 NA1 |
MC16B | Cisco IOS Release 12.0(3)T or later version of Cisco IOS Release 12.0 T |
MC11C, MC12C, MC14C, and MC16C | Cisco IOS Release 11.3(9)NA1 or later version of Cisco IOS Release 11.3 NA |
MC16E | Cisco IOS Release 12.0(8)SC or later version of Cisco IOS Release 12.0 SC |
MC16S | Cisco IOS Release 12.0(7)XR or later version of Cisco IOS Release 12.0 XR |
Table 5 presents a list of basic configuration and diagnostic Cisco IOS commands that you can use to initially configure and troubleshoot Cisco cable modem card installation. For complete command line syntax examples and more definitive explanations of command-line functions, refer to the Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide.
| Command Line | Description |
|---|---|
interface cable | Accesses cable interface configuration mode, allowing you to specify the slot and interface number of the cable modem card you want to configure. For example, to configure upstream port 0 on a cable modem card in slot 3 of your router, you would enter the cable interface 3/0 command. |
cable downstream | Designed to operate while in cable interface configuration mode. Among other functions, the subcommands following the cable downstream command allow you to activate the downstream carrier interface, itself; specify the downstream IF output frequency (in Hz); specify the interleave depth; configure downstream rate limiting values; and specify whether or not the downstream carrier on an MC16E will operate using an Annex A (European) or Annex B (North American) framing format. |
cable upstream | Designed to operate while in cable interface configuration mode. The subcommands following the cable upstream command allow you to activate the upstream interface, itself; set the upstream channel width; set and tune the input power level; configure upstream rate limiting values; specify IP helper addresses for upstream interfaces; and activate or deactivate forward error correction (FEC), concatenation, and the upstream scrambler. |
cable privacy | Designed to operate while in cable interface configuration mode. Allows you to activate and deactivate privacy between remote cable modems and the Cisco uBR7200 series. In addition, you can use the cable privacy command to activate and configure both key encryption key (kek) and traffic encryption key (tek) values for specified cable interfaces. |
cable spectrum-group | Designed to operate while in global configuration mode. Allows you to activate and configure up to 32 different blind and/or scheduled spectrum management groups that can then be assigned to upstream cable interfaces on your Cisco uBR7200 series. Characteristics of spectrum groups that you can specify include predetermined frequencies for automatic frequency hops and specific times of the day to perform scheduled frequency hops. The most important application of this suite of commands is to provide you with efficient control over upstream channels, resulting in more effective spectrum management through greater frequency agility. |
cable arp | Designed to operate while in cable interface configuration mode. Allows you to activate IP address resolution protocol (ARP) on specified cable interfaces. |
cable proxy-arp | Designed to operate while in cable interface configuration mode. Allows you to activate cable proxy ARP for host-to-host communications on specified cable interfaces. |
cable bundle | Designed to operate while in cable interface configuration mode. Allows you to assign specified upstream cable interfaces to bundles. |
cable intercept | Designed to operate while in cable interface configuration mode. Allows you to automatically transmit data received on a specified upstream interface to two destinations on the network. |
cable relay-agent-option | Designed to operate while in cable interface configuration mode. Allows you to enable and disable the cable relay agent on a specified cable interface. |
cable dhcp-giaddr | Designed to operate while in cable interface configuration mode. Allows you to specify whether the Cisco uBR7200 series will assign primary addresses to both cable modems and remote hosts or assign primary addresses to cable modems and secondary addresses to remote hosts. |
cable time-server | Designed to operate while in global configuration mode. Allows you to activate and deactivate Time-of-Day (TOD) service on the Cisco uBR7200 series. |
cable service-flow | Designed to operate while in global configuration mode. Allows you to activate and configure service flow inactivity timeout between the Cisco uBR7200 series and cable modems. |
cable ip-multicast-echo | Designed to operate while in cable interface configuration mode. Allows you to enable and disable IP multicast echo behavior on a specified cable interface. |
cable ip-broadcast-echo | Designed to operate while in cable interface configuration mode. Allows you to enable and disable IP broadcast echo behavior on a specified cable interface. |
cable modulation-profile | Designed to operate while in global configuration mode. Allows you to activate and configure up to 8 different modulation profiles that can then be assigned to upstream cable interfaces on your Cisco uBR7200 series. Among the various characteristics you can specify when creating your modulation profiles are the interval usage code, FEC codeword values, maximum burst length, modulation scheme (16 QAM or QPSK), scrambler activation or deactivation, and the presence or absence of differential encoding. Preconfigured modulation profiles are best used to rapidly configure more than one upstream cable interface requiring the same set of guidelines or preset behavior. |
cable qos | Designed to operate while in global configuration mode. Allows you to create or modify QoS profiles on your Cisco uBR7200 series. The types of QoS characteristics you can specify for a given QoS profile are the guaranteed upstream rate (in kbps), maximum burst size, maximum downstream data rate, priority, type of service (ToS) mask (in hex bits). In addition, you can use the cable qos command to enable or disable the various levels of permission. |
cable sync-interval | Designed to operate while in cable interface configuration mode. Allows you to specify the interval between subsequent sync messages from the Cisco uBR7200 series. |
cable telco-return | Designed to operate while in cable interface configuration mode. Allows you to activate and configure characteristics of DOCSIS telco return communication between cable modems and the Cisco uBR7200 series. Parameters that you can specify for telco return communication include TCD packet transmission intervals, DHCP authentication information, PPP authentication type, dial-up phone numbers for access, usernames, passwords, and connection-attempt threshold values. |
cable shared-secret | Designed to operate while in cable interface configuration mode. Allows you to enable and disable cable modem authentication on a specified upstream cable interface. |
cable source-verify | Designed to operate while in cable interface configuration mode. Allows you to activate and deactivate cable modem upstream verification on a specified upstream cable interface. |
cable modem remote-query | Designed to operate while in global configuration mode. Allows you to activate and specify intervals between subsequent SNMP queries from the Cisco uBR7200 series. |
cable insertion-interval | Designed to operate while in cable interface configuration mode. Allows you to define the maximum insertion interval for cable modems attached to the specified upstream cable interface. |
cable max-hosts | Designed to operate while in cable interface configuration mode. Allows you to specify the maximum number of hosts that can be connected to a cable modem on the network. |
cable registration-timeout | Designed to operate while in cable interface configuration mode. Allows you to specify the maximum number of minutes that pass before a cable modem is declared inactive and the connection timed-out. |
clear cable modem | Designed to operate while in cable interface configuration mode. Allows you to remove one or more cable modems from the station maintenance list and reset them on the cable network. |
cable flap-list | Designed to operate while in global configuration mode. Allows you to specify attributes of the cable flap list, including maximum length, recording duration, and entry threshold values for items in the list. |
show cable | Designed to operate while in enable (privileged EXEC) mode. Allows you to view the various cable configuration settings on your Cisco uBR7200 series. To view a complete list of the subcommands under the show cable command, enter show cable ? and the list of available parameters will be displayed. |
show interface | Designed to operate while in enable (privileged EXEC) mode. Allows you to view the configuration settings for a specified cable interface. To view a complete list of the subcommands under the show interface command, enter cable show slot number/interface number upstream|downstream ? and the list of available parameters will be displayed. |
debug cable | Designed to operate while in enable (privileged EXEC) mode. Allows you to troubleshoot specified cable interfaces on your Cisco uBR7200 series. To view a complete list of the subcommands under the debug cable command, enter debug cable ? and the list of available parameters will be displayed. To disable specific debug message production, simply preface the debug cable parameter command with the no keyword. For example, to turn off cable privacy debug commands, enter the no debug cable privacy command. To disable all debug message production, enter the undebug all command. |
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Posted: Fri Mar 31 09:11:10 PST 2000
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