Support for Extended Upstream Frequency Ranges

First Published: February 14, 2008

Cisco IOS Release 12.2(15)BC2 adds support for the extended upstream frequency range that is used in cable networks in Japan and other areas. This feature also clarifies the configuration of DOCSIS and EuroDOCSIS networks, so that the router shows only those upstream and downstream frequencies that are valid for each mode of operation.


Note


Cisco IOS Release 12.2(33)SCA integrates support for this feature on the Cisco CMTS routers. This feature is also supported in Cisco IOS Release 12.3BC, and this document contains information that references many legacy documents related to Cisco IOS 12.3BC. In general, any references to Cisco IOS Release 12.3BC also apply to Cisco IOS Release 12.2SC.

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Contents

Prerequisites for Extended Upstream Frequency Ranges

  • The Cisco CMTS router must be running Cisco IOS Release 12.2(15)BC2 or later releases.
  • The North American upstream frequency range (DOCSIS, 5 MHz to 42 MHz) is supported on all Cisco CMTS routers and all cable interfaces.
  • The European upstream frequency range (EuroDOCSIS, 5 MHz to 65 MHz) is supported on the following platforms and cable interfaces:
    • Cisco uBR7111E and Cisco uBR7114E routers
    • Cisco uBR7246VXR router with the Cisco uBR-MC16E, Cisco uBR-MC16U/X, or Cisco uBR-MC28U/X cable interface line cards.
    • Cisco uBR10012 router with the Cisco uBR-LCP2-MC16E or Cisco uBR-MC5X20U cable interface line cards.
  • The Japanese extended upstream frequency range (5 MHz to 55 MHz) is supported on the following platforms and cable interfaces:
    • Cisco uBR7111E and Cisco uBR7114E routers
    • Cisco uBR7246VXR router with the Cisco uBR-MC16E, Cisco uBR-MC16U/X, or Cisco uBR-MC28U/X cable interface line cards.
    • Cisco uBR10012 router with the Cisco uBR-LCP2-MC16E or Cisco uBR-MC5X20U cable interface line cards.
  • The cable physical plant must be configured with upconverters, filters, and other equipment that supports the desired frequency range and DOCSIS modes of operation.

Restrictions for Extended Upstream Frequency Ranges

  • The RF modulation format should be configured for ITU J.112 Annex A for EuroDOCSIS operations, and for ITU J.83 Annex B for DOCSIS and Japanese operations. While it is possible to configure the modulation format differently, we do not recommend this because it violates the DOCSIS and EuroDOCSIS specifications.
  • The ITU J.83 Annex C specification is not supported.
  • You cannot configure the router for a particular frequency range if an upstream or spectrum group on the router is currently configured for a frequency that is invalid for the new range. If you try to do so, the command is ignored and a warning message is printed prompting you to reconfigure the upstream or spectrum group before retrying the command.

Information About Extended Upstream Frequency Ranges

The original Data-over-Cable Service Interface Specifications (DOCSIS) specified a range of downstream and upstream frequencies that were compatible only with the North American National Television Systems Committee (NTSC) channel plans.Those specifications have been enhanced to provide support for other cable systems.

Frequency Ranges Currently in Use

The table below lists the specifications that are commonly used in cable plants at the current time:

Table 1 Frequency Specifications

Region

Channel Plan

Radio Frequency (RF)1 Modulation Format

Downstream Frequency Range

Upstream Frequency Range

North American (DOCSIS)

6 MHz NTSC2

ITU J.83 Annex B

85 MHz to 860 MHz

5 MHz to 42 MHz

European (EuroDOCSIS)

8 MHz PAL3/SECAM4

ITU J.112 Annex A

85 MHz to 860 MHz

5 MHz to 65 MHz

Japan5

6 MHz NTSC

ITU J.83 Annex B

70 MHz to 860 MHz

5 MHz to 55 MHz

1 The RF Modulation Format column shows the configuration that is required for operation in normal DOCSIS and EuroDOCSIS networks. While it is possible to configure the Modulation Format differently than what is shown in this table, we do not recommend doing so.
2 NTSC = North American National Television Systems Committee
3 PAL = Phase Alternating Line
4 SECAM= Systeme Electronique Couleur Avec Memoire
5 CableLabs has not released an official version of the DOCSIS specification to support the extended Japanese upstream and downstream frequency ranges.

Extended Frequency Support for Downstreams

All current Cisco cable interface line cards support downstream frequencies between 54 MHz and 860 MHz, which is a superset of the DOCSIS and EuroDOCSIS downstream frequency range. This allows those cards to automatically support the extended downstream frequency range of Japanese networks, assuming that the appropriate upconverters, filters, and other supporting equipment is also installed in the cable plant.

Extended Frequency Support for Upstreams

To support the different upstream frequency ranges, Cisco IOS Release 12.2(15)BC2 introduces a new command, cable freq-range , which configures the Cisco CMTS router for the maximum allowable range of frequencies that can be used on the router. This command makes these frequencies available only for those cable interfaces that support them.


Tip


The cable freq-range command is not normally needed except to enable EuroDOCSIS operations on the Cisco uBR-MC16U/X and Cisco uBR-MC28U/X cards. However, it can be used in other situations to ensure that the other cable upstream commands do not allow frequencies outside of the desired range.


Support for the different frequency ranges depends on the cable interfaces being used:

  • Cisco uBR-MC16E cable interface line card and the Cisco uBR7111E/7114E routers—Support the EuroDOCSIS frequency range, which is the default mode of operation.
  • Cisco uBR-MC16U/X, Cisco uBR-MC28U/X, and Cisco uBR-MC5X20U cable interface line cards—Support the Japanese extended frequency range and the EuroDOCSIS frequency range, and the Japanese range is the default mode of operation.
  • All other cable interfaces—Support the DOCSIS frequency range, which is the default mode of operation.

If a cable interface card does not support the frequency range that is configured with the cable freq-range command, a warning message is displayed. The card interface card, however, can continue to be used with its normal set of frequencies.

For example, consider the case where a Cisco uBR7246VXR router has a Cisco uBR-MC16C card and a Cisco uBR-MC28U card installed. By default, the Cisco uBR-MC16C card supports the DOCSIS frequency range, and the Cisco uBR-MC28U supports the Japanese frequency range. If you configure the router to support the EuroDOCSIS frequency range, only the Cisco uBR-MC28U card supports the extra downstream and upstream frequencies. The Cisco uBR-MC16C card, however, can continue to be used with the regular DOCSIS frequencies.

How to Configure the Upstream Frequency Range

To configure a Cisco CMTS router to use a particular range of upstream frequencies, use the following procedures:


Note


You do not need any special configuration to be able to use the extended range of downstream frequencies that is used in Japanese networks, because all currently-supported Cisco cable interface line cards support a superset (54 MHz to 860 Mhz) of the DOCSIS frequencies that include the Japanese range.

Configuring DOCSIS Upstream Frequencies

To configure one or more upstreams with a frequency in the valid DOCSIS range of 5 MHz to 42 MHz, use the following procedure.


Tip


This procedure typically is not needed, because by default all cable interfaces support the DOCSIS frequency range. However, you might want to use this procedure for the Cisco uBR-MC16U/X and Cisco uBR-MC28U/X cable interface line cards to specify that these cards use a narrower DOCSIS frequency filter that would filter out any noise in the frequencies above 42 MHz, which might improve RF performance on some cable plants.


Before You Begin

All Cisco CMTS platforms and cable interfaces support the North American range of upstream frequencies.

Restriction:

All cable interfaces in the router must be using the North American upstream frequency range.

Any upstreams that are currently configured for frequencies greater than 42 MHz must be reconfigured to use a lower frequency, using the cable upstream frequency interface command, before beginning this procedure.

     Command or ActionPurpose
    Step 1enable


    Example:
    Router> enable 
     

    Enables privileged EXEC mode. Enter your password if prompted.

     
    Step 2configure terminal


    Example:
    Router# configure terminal 
     

    Enters global configuration mode.

     
    Step 3cable freq-range north-american


    Example:
    Router(config)# cable freq-range north-american 
     

    Configures the Cisco CMTS router for the DOCSIS upstream frequency range (5 MHz to 42 MHz).

    Note   

    This command will fail if any upstreams are currently configured with frequencies greater than 42 MHz. Use the cable upstream frequency command to reconfigure these upstreams for a lower frequency and then re-enter this command.

     
    Step 4interface cable {x/y | x/y/z }


    Example:
    Router(config)# interface cable 3/0 
     

    Enters interface cable configuration mode for the specified cable interface.

     
    Step 5cable downstream annex b


    Example:
    Router(config-if)# cable downstream annex b 
     

    Configures the downstream for the Annex B (ITU J.83) RF mode, which is used in DOCSIS networks.

     
    Step 6cable upstream n frequency frequency


    Example:
    Router(config-if)# cable upstream 0 frequency 32000000
     

    Configures the upstream for the desired frequency in Hertz. The valid range for n starts with 0 and depends on the number of upstream ports for this downstream. The valid range for frequency is 5000000 to 42000000.

    Note   

    Repeat this command for each upstream port for this downstream.

     
    Step 7exit


    Example:
    Router(config-if)# exit 
     

    Exits interface configuration mode.

     
    Step 8exit


    Example:
    Router(config)# exit 
     

    Exits global configuration mode.

     

    Configuring Extended DOCSIS Upstream Frequencies for Japan

    To configure one or more upstreams with a frequency in the extended Japanese frequency range of 5 MHz to 55 MHz, use the following procedure.


    Note


    This procedure is not typically needed, because all of the cable interfaces listed in the Before You Begin section support the extended upstream frequency ranges in their default configuration. However, if you have configured a Cisco uBR-MC16U/X or Cisco uBR-MC28U/X card as described in the Configuring DOCSIS Upstream Frequencies, you must use this procedure to re-enable the extended frequency range.
    Before You Begin

    The Japanese upstream frequency range (5 MHz to 55 MHz) is supported on the following platforms and cable interfaces:

    • Cisco uBR7111E and Cisco uBR7114E routers
    • Cisco uBR7246VXR router with the Cisco uBR-MC16E, Cisco uBR-MC16U/X, or Cisco uBR-MC28U/X cable interface line cards.
    • Cisco uBR10012 router with the Cisco uBR-LCP2-MC16E or Cisco uBR-MC5X20U cable interface line cards.
    Restriction:

    All cable interfaces in the router must be using either the North American or the Japanese upstream frequency range.

    Any upstream that is currently configured for EuroDOCSIS, using frequencies greater than 55 MHz must be reconfigured for a lower frequency, using the cable upstream frequency interface command, before beginning this procedure.

       Command or ActionPurpose
      Step 1enable


      Example:
      Router> enable 
       

      Enables privileged EXEC mode. Enter your password if prompted.

       
      Step 2configure terminal


      Example:
      Router# configure terminal 
       

      Enters global configuration mode.

       
      Step 3cable freq-range japanese


      Example:
      Router(config)# cable freq-range japanese 
       

      Configures the Cisco CMTS router for the extended upstream frequency range (5 MHz to 55 MHz) that is used in Japanese cable networks.

      Note   

      This command will fail if any upstreams are currently configured with frequencies greater than 55 MHz. Use the cable upstream frequency command to reconfigure these upstreams for a lower frequency and then re-enter this command.

       
      Step 4interface cable {x/y | x/y/z }


      Example:
      Router(config)# interface cable 3/0 
       

      Enters interface cable configuration mode for the specified cable interface.

       
      Step 5cable downstream annex b


      Example:
      Router(config-if)# cable downstream annex b 
       

      Configures the downstream for the Annex B (ITU J.83) RF mode, which is used in DOCSIS networks.

       
      Step 6cable upstream n frequency frequency


      Example:
      Router(config-if)# cable upstream 0 frequency 32000000
       

      Configures the upstream for the desired frequency in Hertz. The valid range for n starts with 0 and depends on the number of upstream ports for this downstream. The valid range for frequency is 5000000 to 55000000.

      Note   

      Repeat this command for each upstream port for this downstream.

       
      Step 7exit


      Example:
      Router(config-if)# exit 
       

      Exits interface configuration mode.

       
      Step 8exit


      Example:
      Router(config)# exit 
       

      Exits global configuration mode.

       

      Configuring EuroDOCSIS Upstream Frequencies

      To configure one or more upstreams with a frequency in the valid EuroDOCSIS range of 5 MHz to 65 MHz, use the following procedure.


      Tip


      This command is not normally needed with the Cisco UBR-MC5X20U cable interface line card, because by default it supports upstream frequencies up to 65 MHz. However, if you have used one of the previous procedures, Configuring DOCSIS Upstream Frequencies or Configuring Extended DOCSIS Upstream Frequencies for Japan, to limit the frequency range, you must use this procedure to re-enable the EuroDOCSIS frequency range.


      Before You Begin

      The European upstream frequency range (EuroDOCSIS, 5 MHz to 65 MHz) is supported on the following platforms and cable interfaces:

      • Cisco uBR7111E and Cisco uBR7114E routers
      • Cisco uBR7246VXR router with the Cisco uBR-MC16E, Cisco uBR-MC16U/X, or Cisco uBR-MC28U/X cable interface line cards.
      • Cisco uBR10012 router with the Cisco uBR-LCP2-MC16E or Cisco uBR-MC5X20U cable interface line cards.

         Command or ActionPurpose
        Step 1enable


        Example:
        Router> enable 
         

        Enables privileged EXEC mode. Enter your password if prompted.

         
        Step 2configure terminal


        Example:
        Router# configure terminal 
         

        Enters global configuration mode.

         
        Step 3cable freq-range european


        Example:
        Router(config)# cable freq-range european 
         

        Configures the Cisco CMTS router for the EuroDOCSIS upstream frequency range (5 MHz to 65 MHz).

         
        Step 4interface cable {x/y | x/y/z }


        Example:
        Router(config)# interface cable 3/0 
         

        Enters interface cable configuration mode for the specified cable interface.

         
        Step 5cable downstream annex a


        Example:
        Router(config-if)# cable downstream annex a 
         

        Configures the downstream for the Annex A (ITU J.112) RF mode, which is used in EuroDOCSIS networks.

        Note   

        You must configure the downstream for Annex A for EuroDOCSIS operations. You can configure certain cable interface cards (such as the Cisco uBR-MC28U) for both Annex B (DOCSIS) and the EuroDOCSIS frequency range, but this violates the DOCSIS specifications and should not be used on standard DOCSIS networks.

         
        Step 6cable upstream n frequency frequency


        Example:
        Router(config-if)# cable upstream 0 frequency 32000000
         

        Configures the upstream for the desired frequency in Hertz. The valid range for n starts with 0 and depends on the number of upstream ports for this downstream. The valid range for frequency is 5000000 to 65000000.

        Note    Repeat this command for each upstream port for this downstream.
         
        Step 7exit


        Example:
        Router(config-if)# exit 
         

        Exits interface configuration mode.

         
        Step 8exit


        Example:
        Router(config)# exit 
         

        Exits global configuration mode.

         

        Configuration Examples for Extended Upstream Frequency Ranges

        This section provides the following examples of sample configurations for the cable interface:

        Example: Configuring North American (DOCSIS) Frequency Range

        The following excerpt from a configuration file for the Cisco uBR7246VXR router shows a Cisco uBR-MC28U card and a Cisco uBR-MC16U card being configured for the default DOCSIS upstream frequency range of 5 MHz to 42 MHz. This frequency spectrum is allocated across two spectrum groups. Also, each downstream is configured for the DOCSIS Annex B mode.


        Note


        The cable freq-range north-american command is not needed for this configuration, but using the command filters out the upstream frequencies above 42 MHz, which could be useful if noise is occurring in those frequencies.
        ...
        cable freq-range north-american 
        cable spectrum-group 1 shared 
        cable spectrum-group 1 band 5000000 23500000
        cable spectrum-group 2 shared
        cable spectrum-group 2 band 23500000 42000000
        ...
        !
        interface Cable3/0
         description Cisco uBR-MC28U cable interface DS0
         ip address 10.2.4.1 255.255.255.0 secondary
         ip address 10.2.3.1 255.255.255.0
         cable downstream annex B
         cable downstream modulation 64qam
         cable downstream interleave-depth 32
         cable downstream frequency 195000000
         cable downstream channel-id 0
         cable upstream 0 frequency 29008000
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 1
         no cable upstream 0 shutdown
         cable upstream 1 frequency 25808000
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 3200000
         cable upstream 1 minislot-size 2
         cable upstream 1 modulation-profile 1
         no cable upstream 1 shutdown
         cable upstream 2 frequency 9808000
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 3200000
         cable upstream 2 minislot-size 2
         cable upstream 2 modulation-profile 1
         no cable upstream 2 shutdown
         cable upstream 3 frequency 19408000
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 3200000
         cable upstream 3 minislot-size 2
         cable upstream 3 modulation-profile 1
         no cable upstream 3 shutdown
         cable dhcp-giaddr policy
         cable helper-address 10.2.0.2
        !
        interface Cable3/1
         description Cisco uBR-MC28U cable interface DS1 
         ip address 10.2.5.1 255.255.255.0 secondary
         ip address 10.2.4.1 255.255.255.0
         cable downstream annex B
         cable downstream modulation 64qam
         cable downstream interleave-depth 32
         cable downstream frequency 789000000
         cable downstream channel-id 1
         cable upstream 0 spectrum-group 1
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 1
         no cable upstream 0 shutdown
         cable upstream 1 spectrum-group 1
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 3200000
         cable upstream 1 minislot-size 2
         cable upstream 1 modulation-profile 1
         no cable upstream 1 shutdown
         cable upstream 2 spectrum-group 2
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 3200000
         cable upstream 2 minislot-size 2
         cable upstream 2 modulation-profile 1
         no cable upstream 2 shutdown
         cable upstream 3 spectrum-group 2
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 1600000
         cable upstream 3 minislot-size 4
         cable upstream 3 modulation-profile 1
         no cable upstream 3 shutdown
         cable dhcp-giaddr policy
         cable helper-address 10.2.0.2
        !
        interface Cable4/0
         description Cisco uBR-MC16U cable interface
         ip address 10.2.0.1 255.255.255.0 secondary
         ip address 10.2.0.1 255.255.255.0
         cable bundle 10 master
         cable downstream annex B
         cable downstream modulation 64qam
         cable downstream interleave-depth 32
         cable downstream frequency 195000000
         cable downstream channel-id 2
         cable upstream 0 frequency 29008000
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 1
         cable upstream 0 shutdown
         cable upstream 1 frequency 25808000
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 3200000
         cable upstream 1 minislot-size 2
         cable upstream 1 modulation-profile 1
         cable upstream 1 shutdown
         cable upstream 2 frequency 9808000
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 3200000
         cable upstream 2 minislot-size 2
         cable upstream 2 modulation-profile 1
         cable upstream 2 shutdown
         cable upstream 3 frequency 19408000
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 3200000
         cable upstream 3 minislot-size 2
         cable upstream 3 modulation-profile 1
         cable upstream 3 shutdown
         cable upstream 4 frequency 35408000
         cable upstream 4 power-level 0
         cable upstream 4 channel-width 3200000
         cable upstream 4 minislot-size 2
         cable upstream 4 modulation-profile 1
         cable upstream 4 shutdown
         cable upstream 5 frequency 16208000
         cable upstream 5 power-level 0
         cable upstream 5 channel-width 3200000
         cable upstream 5 minislot-size 2
         cable upstream 5 modulation-profile 1
         cable upstream 5 shutdown
         cable dhcp-giaddr policy
         cable helper-address 10.2.0.2
        !
        ... 

        Example: Configuring Japanese Frequency Range

        The following excerpt from a configuration file for the Cisco uBR7246VXR router shows a Cisco uBR-MC28U card and two Cisco uBR-MC16U cards being configured for the Japanese extended upstream frequency range of 5 MHz to 55 MHz. This frequency spectrum is allocated across three spectrum groups. Also, each downstream is configured for the DOCSIS Annex B mode.

        ...
        cable freq-range japanese
        cable spectrum-group 1 shared
        cable spectrum-group 1 band 5000000 23500000
        cable spectrum-group 2 shared
        cable spectrum-group 2 band 23500000 42000000
        cable spectrum-group 3 shared
        cable spectrum-group 3 band 42000000 55000000
        ...
        !
        interface Cable3/0
         description Cisco uBR-MC28U cable interface DS0
         ip address 10.2.4.1 255.255.255.0 secondary
         ip address 10.2.3.1 255.255.255.0
         cable downstream annex B
         cable downstream modulation 64qam
         cable downstream interleave-depth 32
         cable downstream frequency 195000000
         cable downstream channel-id 0
         cable upstream 0 frequency 29008000
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 1
         no cable upstream 0 shutdown
         cable upstream 1 frequency 25808000
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 3200000
         cable upstream 1 minislot-size 2
         cable upstream 1 modulation-profile 1
         no cable upstream 1 shutdown
         cable upstream 2 frequency 44808000
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 3200000
         cable upstream 2 minislot-size 2
         cable upstream 2 modulation-profile 1
         no cable upstream 2 shutdown
         cable upstream 3 frequency 19408000
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 3200000
         cable upstream 3 minislot-size 2
         cable upstream 3 modulation-profile 1
         no cable upstream 3 shutdown
         cable dhcp-giaddr policy
         cable helper-address 10.2.0.2
        !
        interface Cable3/1
         description Cisco uBR-MC28U cable interface DS1
         ip address 10.2.5.1 255.255.255.0 secondary
         ip address 10.2.4.1 255.255.255.0
         cable downstream annex B
         cable downstream modulation 64qam
         cable downstream interleave-depth 32
         cable downstream frequency 789000000
         cable downstream channel-id 1
         cable upstream 0 frequency 45408000
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 1
         no cable upstream 0 shutdown
         cable upstream 1 frequency 16208000
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 3200000
         cable upstream 1 minislot-size 2
         cable upstream 1 modulation-profile 1
         no cable upstream 1 shutdown
         cable upstream 2 frequency 6608000
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 3200000
         cable upstream 2 minislot-size 2
         cable upstream 2 modulation-profile 1
         no cable upstream 2 shutdown
         cable upstream 3 frequency 41008000
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 1600000
         cable upstream 3 minislot-size 4
         cable upstream 3 modulation-profile 1
         no cable upstream 3 shutdown
         cable dhcp-giaddr policy
         cable helper-address 10.2.0.2
        !
        interface Cable4/0
         description Cisco uBR-MC16U cable interface
         ip address 10.2.0.1 255.255.255.0 secondary
         ip address 10.2.0.1 255.255.255.0
         cable bundle 10 master
         cable downstream annex B
         cable downstream modulation 64qam
         cable downstream interleave-depth 32
         cable downstream frequency 195000000
         cable downstream channel-id 2
         cable upstream 0 frequency 29008000
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 1
         cable upstream 0 shutdown
         cable upstream 1 frequency 25808000
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 3200000
         cable upstream 1 minislot-size 2
         cable upstream 1 modulation-profile 1
         cable upstream 1 shutdown
         cable upstream 2 frequency 9808000
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 3200000
         cable upstream 2 minislot-size 2
         cable upstream 2 modulation-profile 1
         cable upstream 2 shutdown
         cable upstream 3 frequency 19408000
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 3200000
         cable upstream 3 minislot-size 2
         cable upstream 3 modulation-profile 1
         cable upstream 3 shutdown
         cable upstream 4 frequency 35408000
         cable upstream 4 power-level 0
         cable upstream 4 channel-width 3200000
         cable upstream 4 minislot-size 2
         cable upstream 4 modulation-profile 1
         cable upstream 4 shutdown
         cable upstream 5 frequency 16208000
         cable upstream 5 power-level 0
         cable upstream 5 channel-width 3200000
         cable upstream 5 minislot-size 2
         cable upstream 5 modulation-profile 1
         cable upstream 5 shutdown
         cable dhcp-giaddr policy
         cable helper-address 10.2.0.2
        !
        interface Cable5/0
         description Cisco uBR-MC16U cable interface
         no ip address
         load-interval 30
         cable bundle 10
         cable downstream annex B
         cable downstream modulation 64qam
         cable downstream interleave-depth 32
         cable downstream frequency 453000000
         cable downstream channel-id 4
         no cable downstream rf-shutdown
         cable upstream 0 spectrum-group 3
         cable upstream 0 ingress-noise-cancellation 200
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 200000 200000
         cable upstream 0 minislot-size 32
         cable upstream 0 modulation-profile 41
         no cable upstream 0 shutdown
         cable upstream 1 spectrum-group 1
         cable upstream 1 ingress-noise-cancellation 200
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 1600000 1600000
         cable upstream 1 minislot-size 4
         cable upstream 1 modulation-profile 42
         no cable upstream 1 shutdown
         cable upstream 2 spectrum-group 3
         cable upstream 2 ingress-noise-cancellation 200
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 1600000 1600000
         cable upstream 2 minislot-size 4
         cable upstream 2 modulation-profile 42
         no cable upstream 2 shutdown
         cable upstream 3 spectrum-group 3
         cable upstream 3 ingress-noise-cancellation 200
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 1600000 1600000
         cable upstream 3 minislot-size 4
         cable upstream 3 modulation-profile 42
         no cable upstream 3 shutdown
         cable upstream 4 spectrum-group 3
         cable upstream 4 ingress-noise-cancellation 200
         cable upstream 4 power-level 0
         cable upstream 4 channel-width 1600000 1600000
         cable upstream 4 minislot-size 4
         cable upstream 4 modulation-profile 42
         no cable upstream 4 shutdown
         cable upstream 5 spectrum-group 3
         cable upstream 5 ingress-noise-cancellation 200
         cable upstream 5 power-level 0
         cable upstream 5 channel-width 1600000 1600000
         cable upstream 5 minislot-size 4
         cable upstream 5 modulation-profile 42
         no cable upstream 5 shutdown
         cable dhcp-giaddr policy
         cable helper-address 10.2.0.2
        ! 
        ... 

        Example: Configuring European (EuroDOCSIS) Frequency Range

        The following excerpt from a configuration file for the Cisco uBR10012 router shows a Cisco uBRMC5X20U card being configured for the EuroDOCSIS frequency range of 5 MHz to 65 MHz. This frequency spectrum is allocated across a number of spectrum groups. Also, each downstream is configured for the EuroDOCSIS Annex A mode.

        ...
        card 5/0 5cable-mc520u-d
        ...
        cable freq-range european
        cable spectrum-group 1 shared
        cable spectrum-group 1 band 5000000 42000000 
        cable spectrum-group 2 shared
        cable spectrum-group 2 band 5000000 30000000 
        cable spectrum-group 3 shared
        cable spectrum-group 3 band 30000000 42000000 
        cable spectrum-group 4 band 5000000 10000000 
        cable spectrum-group 5 band 10000000 15000000 
        cable spectrum-group 6 band 15000000 20000000 
        cable spectrum-group 7 band 20000000 25000000 
        cable spectrum-group 8 band 25000000 30000000 
        cable spectrum-group 9 band 30000000 35000000 
        cable spectrum-group 10 band 35000000 42000000 
        cable spectrum-group 12 band 42000000 50000000 
        cable spectrum-group 13 band 5000000 55000000 
        cable spectrum-group 14 band 55000000 65000000 
        !
        interface Cable5/0/0
         no ip address
         cable enable-trap cmonoff-notification
         cable bundle 1 master
         cable downstream annex A
         cable downstream modulation 256qam
         cable downstream interleave-depth 64
         cable downstream frequency 471000000
         cable downstream channel-id 0
         no cable downstream rf-shutdown
         cable upstream 0 spectrum-group 6
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 21 22
         no cable upstream 0 shutdown
         cable upstream 1 spectrum-group 7
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 1600000
         cable upstream 1 minislot-size 4
         cable upstream 1 modulation-profile 121 122
         no cable upstream 1 shutdown
         cable upstream 2 spectrum-group 8
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 800000
         cable upstream 2 minislot-size 8
         cable upstream 2 modulation-profile 123 124
         no cable upstream 2 shutdown
         cable upstream 3 spectrum-group 14
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 400000
         cable upstream 3 minislot-size 16
         cable upstream 3 modulation-profile 22 23
         no cable upstream 3 shutdown
        !
        interface Cable5/0/1
         no ip address
         load-interval 30
         cable bundle 1
         cable downstream annex A 
         cable downstream modulation 256qam
         cable downstream interleave-depth 32
         cable downstream frequency 471000000
         cable downstream channel-id 0
         no cable downstream rf-shutdown
         cable upstream 0 spectrum-group 10
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 122 123
         no cable upstream 0 shutdown
         cable upstream 1 spectrum-group 2
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 1600000
         cable upstream 1 minislot-size 4
         cable upstream 1 modulation-profile 124 125
         no cable upstream 1 shutdown
         cable upstream 2 spectrum-group 3
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 400000
         cable upstream 2 minislot-size 16
         cable upstream 2 modulation-profile 126 127
         no cable upstream 2 shutdown
         cable upstream 3 spectrum-group 1
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 200000
         cable upstream 3 minislot-size 32
         cable upstream 3 modulation-profile 125 128
         no cable upstream 3 shutdown
        !
        interface Cable5/0/2
         no ip address
         load-interval 30
         cable bundle 2
         cable downstream annex A
         cable downstream modulation 256qam
         cable downstream interleave-depth 16
         cable downstream frequency 453000000
         cable downstream channel-id 0
         no cable downstream rf-shutdown
         cable upstream 0 spectrum-group 1
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 1600000
         cable upstream 0 minislot-size 4
         cable upstream 0 modulation-profile 21 22
         no cable upstream 0 shutdown
         cable upstream 1 spectrum-group 2
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 3200000
         cable upstream 1 minislot-size 2
         cable upstream 1 modulation-profile 122 129
         no cable upstream 1 shutdown
         cable upstream 2 spectrum-group 3
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 800000
         cable upstream 2 minislot-size 8
         cable upstream 2 modulation-profile 123 126
         no cable upstream 2 shutdown
         cable upstream 3 spectrum-group 1
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 3200000
         cable upstream 3 minislot-size 2
         cable upstream 3 modulation-profile 22 23
         no cable upstream 3 shutdown
        !
        interface Cable5/0/3
         no ip address
         cable bundle 3
         cable downstream annex A 
         cable downstream modulation 256qam
         cable downstream interleave-depth 16
         cable downstream frequency 471000000
         cable downstream channel-id 0
         no cable downstream rf-shutdown
         cable upstream 0 spectrum-group 6
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 21 22
         no cable upstream 0 shutdown
         cable upstream 1 spectrum-group 6
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 1600000
         cable upstream 1 minislot-size 4
         cable upstream 1 modulation-profile 121 122
         no cable upstream 1 shutdown
         cable upstream 2 spectrum-group 7
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 800000
         cable upstream 2 minislot-size 8
         cable upstream 2 modulation-profile 123 124
         no cable upstream 2 shutdown
         cable upstream 3 spectrum-group 7
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 400000
         cable upstream 3 minislot-size 16
         cable upstream 3 modulation-profile 22 23
         no cable upstream 3 shutdown
        !
        interface Cable5/0/4
         no ip address
         cable bundle 4
         cable downstream annex A
         cable downstream modulation 256qam
         cable downstream interleave-depth 32
         cable downstream frequency 471000000
         cable downstream channel-id 0
         no cable downstream rf-shutdown
         cable upstream 0 spectrum-group 10
         cable upstream 0 power-level 0
         cable upstream 0 channel-width 3200000
         cable upstream 0 minislot-size 2
         cable upstream 0 modulation-profile 22 24
         no cable upstream 0 shutdown
         cable upstream 1 spectrum-group 10
         cable upstream 1 power-level 0
         cable upstream 1 channel-width 3200000
         cable upstream 1 minislot-size 2
         cable upstream 1 modulation-profile 122 129
         no cable upstream 1 shutdown
         cable upstream 2 spectrum-group 15
         cable upstream 2 power-level 0
         cable upstream 2 channel-width 3200000
         cable upstream 2 minislot-size 2
         cable upstream 2 modulation-profile 125 124
         no cable upstream 2 shutdown
         cable upstream 3 spectrum-group 15
         cable upstream 3 power-level 0
         cable upstream 3 channel-width 3200000
         cable upstream 3 minislot-size 2
         cable upstream 3 modulation-profile 22 23
         no cable upstream 3 shutdown
         no keepalive
        !

        Additional References

        The following sections provide references related to the Extended Upstream Frequency Ranges.

        Related Documents

        Related Topic

        Document Title

        CMTS Command Reference

        Cisco Broadband Cable Command Reference Guide, at the following URL:

        http:/​/​www.cisco.com/​en/​US/​docs/​ios/​cable/​command/​reference/​cbl_​book.html

        Software Configuration Information

        Cisco uBR7100 Series Software Configuration Guide, at the following URL:

        http:/​/​www.cisco.com/​en/​US/​docs/​cable/​cmts/​ubr7100/​configuration/​guide/​scg7100.html

        Cisco uBR7200 Series Software Configuration Guide, at the following URL:

        http:/​/​www.cisco.com/​en/​US/​docs/​cable/​cmts/​ubr7200/​configuration/​guide/​cr72scg.html

        Cisco uBR10012 Universal Broadband Router Software Configuration Guide, at the following URL:

        http:/​/​www.cisco.com/​en/​US/​docs/​cable/​cmts/​ubr10012/​configuration/​guide/​scg.html

        Cable Features Configuration Guide

        Cisco CMTS Feature Guide, at the following URL: http:/​/​www.cisco.com/​en/​US/​docs/​cable/​cmts/​feature/​guide/​cmtsfg.html

        Cisco IOS Release 12.2 Command Reference

        Cisco IOS Release 12.2 Configuration Guides and Command References, at the following URL:

        http:/​/​www.cisco.com/​en/​US/​products/​sw/​iosswrel/​ps1835/​products_​installation_​and_​configuration_​guides_​list.html

        Standards and RFCs

        Standards

        Title

        SP-RFIv1.1-I09-020830

        Data-over-Cable Service Interface Specifications Radio Frequency Interface Specification, version 1.1

        SP-RFIv2.0-I03-021218

        Data-Over-Cable Service Interface Specifications Radio Frequency Interface Specification, version 2.0

        MIBs

        MIBs

        MIBs Link

        • CISCO-CABLE-SPECTRUM-MIB

        To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

        http:/​/​www.cisco.com/​go/​mibs

        Technical Assistance

        Description

        Link

        Technical Assistance Center (TAC) home page, containing 30,000 pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.

        http:/​/​www.cisco.com/​cisco/​web/​support/​index.html