Controller Profile Configuration

This document describes how to configure the controller profile on the Cisco cBR Series Converged Broadband Router.

Hardware Compatibility Matrix for the Cisco cBR Series Routers


Note
The hardware components that are introduced in a given Cisco IOS-XE Release are supported in all subsequent releases unless otherwise specified.
Table 1. Hardware Compatibility Matrix for the Cisco cBR Series Routers

Cisco CMTS Platform

Processor Engine

Interface Cards

Cisco cBR-8 Converged Broadband Router

Cisco IOS-XE Release 16.5.1 and Later Releases

Cisco cBR-8 Supervisor:

  • PID—CBR-SUP-250G

  • PID—CBR-CCAP-SUP-160G

Cisco IOS-XE Release 16.5.1 and Later Releases

Cisco cBR-8 CCAP Line Cards:

  • PID—CBR-LC-8D30-16U30

  • PID—CBR-LC-8D31-16U30

  • PID—CBR-RF-PIC

  • PID—CBR-RF-PROT-PIC

  • PID—CBR-CCAP-LC-40G

  • PID—CBR-CCAP-LC-40G-R

  • PID—CBR-CCAP-LC-G2-R

  • PID—CBR-SUP-8X10G-PIC

  • PID—CBR-2X100G-PIC

Digital PICs:

  • PID—CBR-DPIC-8X10G

  • PID—CBR-DPIC-2X100G

Cisco cBR-8 Downstream PHY Module:

  • PID—CBR-D31-DS-MOD

Cisco cBR-8 Upstream PHY Modules:

  • PID—CBR-D31-US-MOD

Note

Do not use DPICs (8X10G and 2x100G) to forward IP traffic, as it may cause buffer exhaustion, leading to line card reload.

The only allowed traffic on a DPICs DEPI, UEPI, and GCP traffic from the Cisco cBR-8 router to Remote PHY devices. Other traffic such as DHCP, SSH, and UTSC should flow via another router, since DPICs cannot be used for normal routing.

Information about Controller Profile Configuration

As density increases with the merging of CMTS and UEQAM functions in the same device, the current controller configuration method becomes too complex and difficult. There are too many identical lines of configuration.

To simplify the controller configuration, a new concept called controller profile is introduced. A controller profile is a group of configuration parameters that apply to downstream and upstream controller, the benefits include:

  • Speed up deployment

  • Simplify cBR-8 deployment, configuration and troubleshooting

  • Common configurations across nodes/regions

  • Consistency across Cisco products for common functions

How to Configure the Controller Profile

User configures I-CMTS controllers using legacy controller configuration commands by default. If user wants to use I-CMTS controller profile, needs to enable it first with cable controller-profile I-CMTS enable command.


Note

  • If user wants to configure controller using profile, it is recommended to start configuration on a “clean” CMTS without any legacy command configured in Integrated-Cable and Upstream-Cable controllers. Do not switch over between legacy configuration and profile.

  • When modifying controller profile, all related controllers will be changed. So if user wants to configure a specific controller, for example, modify the base-channel power of a controller, user should not bind this controller to a profile together with other controllers.

  • Legacy controller configuration commands are not supported if I-CMTS controller-profile is enabled.

  • Legacy controller configuration cannot be shown in running-config if I-CMTS controller-profile is enabled.

Configuring Downstream Controller Profile

To configure downstream controller profile, use the steps below:

enable 
configure terminal 
cable downstream controller-profile id [RPHY|I-CMTS] 
base-channel-power value 
max-carrier value 
freq-profile id 
max-ofdm-spectrum value 
ofdm-freq-excl-band start-frequency value widthvalue 
rf-chan start_id [end_id] 
type value 
rf-output value 
power-adjust value 
qam-profileid  
docsis-channel-idid  
power-profile id 
ofdm channel-profile id start-frequency value width value [plc value] 

enable 
configure terminal 
controller integrated-cable slot/subslot/port 
profile id

Below is an example:

cable downstream controller-profile 0 I-CMTS
 max-carrier 32
 base-channel-power 34
 rf-chan 0 3
  type DOCSIS
  frequency 111000000
  rf-output NORMAL
  qam-profile 1
  docsis-channel-id 1

controller integrated-cable 2/0/0
 profile 0

Note

  • When configure a new I-CMTS controller profile, keyword I-CMTS is needed. If input RPHY or do not input any keyword, the system will consider it as a RPHY controller profile. Once a profile type (RPHY/I-CMTS) is set, it cannot be modified.

  • Updating a profile will affect all the controllers bond with it. To delete a profile that bond with controller, user must unbind all the controllers first. All rf-channel configuration in controller will be deleted after unbind.

  • At least 8 QAM channels should be configured to get the right power. Single continuous wave (CW) mode is not supported.

Verifying Downstream Controller Profile Configuration

Use the show cable downstream controller-profile command to verify the configuration of the downstream controller profile. 

Router# show cable downstream controller-profile 0
Downstream controller-profile 0, type I-CMTS
Description:
Downstream controller-profile 0 is being used by controller Integrated-Cable:
  2/0/0,
  Admin:  UP
  MaxOfdmSpectrum: 192000000
  MaxCarrier: 128
  BasePower: 33.0 dBmV
  Mode: normal
  Frequency profile: unconfigured
  DS Splitting: No
  OFDM frequency exclusion bands: None

Configured RF Channels:
Chan Admin Frequency  Type        Annex Mod  srate Qam-profile  dcid  power output
 0    UP   213000000  DOCSIS       B    256   5361  1           1     33.0  NORMAL
 1    UP   219000000  DOCSIS       B    256   5361  1           2     33.0  NORMAL
 2    UP   225000000  DOCSIS       B    256   5361  1           3     33.0  NORMAL
 3    UP   231000000  DOCSIS       B    256   5361  1           4     33.0  NORMAL
 4    UP   237000000  DOCSIS       B    256   5361  1           5     33.0  NORMAL
 5    UP   243000000  DOCSIS       B    256   5361  1           6     33.0  NORMAL

In the above output, integrated-cable 2/0/0 is bond to profile 0. So the output of the show controllers integrated-Cable 2/0/0 rf-channel 0 5 should match the above output. See the example below: 

Router# show controllers integrated-cable 2/0/0 rf-channel 0-5
...
Chan Admin Frequency  Type        Annex Mod  srate Qam-profile  dcid  power output
 0    UP   213000000  DOCSIS       B    256   5361  1           1     33.0  NORMAL
 1    UP   219000000  DOCSIS       B    256   5361  1           2     33.0  NORMAL
 2    UP   225000000  DOCSIS       B    256   5361  1           3     33.0  NORMAL
 3    UP   231000000  DOCSIS       B    256   5361  1           4     33.0  NORMAL
 4    UP   237000000  DOCSIS       B    256   5361  1           5     33.0  NORMAL
 5    UP   243000000  DOCSIS       B    256   5361  1           6     33.0  NORMAL

To check if the parameters in a profile match with the ones configured, use the show running-config [all] | section cable downstream controller-profile command as shown in the example below: 

Router# show running-config | section downstream controller-profile
cable downstream controller-profile 0 I-CMTS
 max-carrier 32
 base-channel-power 34
 rf-chan 0 3
  type DOCSIS
  frequency 111000000
  rf-output NORMAL
  qam-profile 1
  docsis-channel-id 1

Configuring Upstream Controller Profile

To configure upstream controller profile, use the steps below:

enable 
configure terminal 
cable upstream controller-profile id [RPHY|I-CMTS] 
us-channel id {chan-class-id id|channel-width {first-choice-width [last-choice-width]}|docsis-mode{atdma| tdma| tdma-atdma}|equalization-coefficient|frequencyvalue|hop-priority{frequency modulation channel-width| modulation frequency channel-width| frequency channel-width modulation}|ingress-nosie-cancellation interval|maintain-psd|max-logical-chans id|minislot-size value|modulation-profile primary-profile-number[secondary-profile-number][tertiary-profile-number]|power-level value|rng-holdoff priority|specsvl error-adaptive-profile id|spectrum-group id|threshold {cnr-profiles value [value]|corr-fec value|hysteresis value|snr-profiles value [value]|corr-fec value} 


enable 
configure terminal 
controller upstream-cable slot/subslot/port 
profile id

Note

  • When configure a new I-CMTS controller profile, keyword I-CMTS is needed. If input RPHY or do not input any keyword, the system will consider it as a RPHY controller profile. Once a profile type (RPHY/I-CMTS) is set, it cannot be modified.

  • Updating a profile will affect all the controllers bond with it. To delete a profile that bond with controller, user must unbind all the controllers first.

  • OFDMA does not support the use of profile in this release.

Verifying Upstream Controller Profile Configuration

Use the show cable upstream controller-profile command to verify the configuration of the upstream controller profile. 

Router# show cable upstream controller-profile 0
Upstream controller-profile 0, type I-CMTS
Description:
Upstream controller-profile 0 is being used by controller Upstream-Cable:
9/0/0
  
Controller Upstream-Cable
    ...
  Upstream-channel 0
    chan-class-id                  : 0x0
    channel-width                  : 1600000 1600000
    docsis-mode                    : atdma
    equalization-coefficient       : TRUE
    frequency                      : 5000000
    ...
    modulation-profile             : 221
    ...
    shutdown                       : FALSE
    ...

In the above output, upstream-cable 9/0/0 is bond to profile 0. So the output of the show controllers upstream-Cable 9/0/0 us-channel 0 should match the above output. See the example below: 

Router# show controllers upstream-Cable 9/0/0 us-channel 0
...
Controller 9/0/0 upstream 0  AdminState:UP OpState: UP
  atdma mode enabled
  Frequency 5.000 MHz, Channel Width 1.600 MHz, Symbol Rate 1.280 Msps
  Modulation Profile Group 221

To check if the parameters in a profile match with the ones configured, use the show running-config [all] | section cable upstream controller-profile command as shown in the example below: 

Router# show running-config | s cable upstream controller-profile 0
cable upstream controller-profile 0 I-CMTS
 us-channel 0 channel-width 1600000 1600000
 us-channel 0 docsis-mode atdma
 us-channel 0 minislot-size 4
 us-channel 0 modulation-profile 221
 us-channel 0 shutdown    
 ...

Support for RPHY GCP TLV 98.3 (BaseTargetRxPower)

cBR-8 routers support RPHY GCP TLV 98.3 - BaseTargetRxPower for the upstream controller port on the RPD. The base power config can be applied to both cable upstream controller-profile and cable rpd level. If configured at both levels, the configuration at the cable rpd level takes priority for that rpd.

Use the base-power-rx-level-1_6Mhz option under cable upstream controller-profile to enable base power configuration for the entire upstream port. 

router(config)#cable upstream controller-profile 499
router(config-controller-profile)#base-power-rx-level-1_6Mhz ?
  <-20 - 40>          Supported ranges: -15~24 for rphy-node, -15~20 for 
                       rphy-shelf(ref pt:0dBmV/1.6Mhz)

Use the following command to disable TLV 98.3 on cBR-8: router(config-controller-profile)#no base-power-rx-level-1_6Mhz

The allowed range for upstream controller port base power configuration per CableLabs specification is -20 to +40 dBmV/1.6MHz. Cisco RPD 1x2 supports only the following ranges for pga gain configuration: -9 to +30 dBmV/6.4MHz for rphy-node and -9 to +26 dBmV/6.4MHz for rphy-shelf. Since there can be multiple RPDs per upstream controller port, you must pay attention to the RPD-specific capabilities, to correctly configure the base port power values. The software does not restrict the configuration to allow multiple RPD vendors using the same upstream controller profile. You can reconfigure the power levels at the per-channel level appropriately.

The option to configure the base port power config at the profile level, affects all RPDs using that profile; while the configuration at the cable rpd level fine tunes the base power configuration only for that upstream port on that RPD. It also takes precedence over the profile configuration for base power if present.

At the RPD level, use the base-power-rx-level-1_6Mhz option under cable rpd to enable base power configuration. 

router(config)#cable rpd node1
router(config-rpd)#identifier aaaa.bbbb.cccc
router(config-rpd)#rpd-us 0 base-power-rx-level-1_6Mhz ?
<-20 -40>   Supported ranges : -15~24 for rphy-node, -15~20 for rphy-shelf 
            (refpt:0dBmV/1.6Mhz)

Configuring the base power using either of the preceding commands, trigger the TLV 98.3 message from CBR8 to RPD and the implementation on RPD changes to reflect new power calculations based on 0dBmV/1.6MHz reference.

Use the following command to disable TLV 98.3 on cBR-8: router (config-rpd)#no rpd-us 0 base-power-rx-level-1_6Mhz. Use this option to configure US Base target power level in units of dBmV/1.6MHz (TLV 98.3).

At the RPD upstream port (service group) level, the Remote PHY standard allows a CCAP core to configure a base target power reference level for all upstream signals from a given US RF port. This reference level is specified as a power spectral density (dBmV per 1.6 MHz) through GCP TLV 98.3, which corresponds to UsRfPort.BaseTargetRxPower.

Upstream Per-Channel TLVs

For the per-channel upstream power config, it captures either the total absolute power levels per 6.4MHz or true power adjust levels depending on whether the upstream base power command base-power-rx-level-1_6Mhz is configured. The per-channel command has enhanced help strings to display the changes if base-power-rx-level-1_6Mhz is configured. 

Router (config-controller-profile)#us-channel 0 power-level ?
<7 -25>   Power level in dBmV-total power in units of dBmV per 6.4 Mhz if base-power-rx-level-1.6Mhz NOT  configured (-x~y for rphy-node, x~y for rphy-shelf)
[OR] power adjust in units of dBmV per 1.6 Mhz if base-power-rx-level-1_6Mhz configured

Configuration With SC-QAM Upstream Channel

router(config)#cable upstream controller-profile 499
CBR8(config-controller-profile)#base-power-rx-level-1_6Mhz 10 
CBR8(config-controller-profile)# us-channel 0 channel-width 3200000 3200000
CBR8(config-controller-profile)# us-channel 0 docsis-mode atdma
CBR8(config-controller-profile)# us-channel 0 power-level 5

Here us-channel 0 power-level 5 indicates US target rx power adjust level - true power adjust with above upstream base power config(TLV 65.9).

For the per-channel upstream power config, if the base port power level is configured via TLV 98.3, the channel adjusts automatically become true channel adjusts in Cisco 1x2 RPD. You must reconfigure the per channel power adjust if needed by taking the new port base power configuration into consideration.

NVGEN For cBR-8

All the upstream RF port base power configurations are nv-gened. The base power configuration is available in show running-configuration once you enable it. The default configuration for the CBR8 is the noversion of the base power command for the TLV 98.3. If you do not enable the feature or explicitly disable the feature, then the default configuration can be verified by using the no version of this feature in show running-config all.

For example, with no base power config on the upstream RF port, see the following sample outputs for the show run and the show run all: 

Router#show run all | sec cable upstream controller-profile 3
cable upstream controller-profile 3
 description Cox-upstream-prof-eg
 no base-power-rx-level-1_6Mhz
cable def-phy-burst 0
 us-channel 0 chan-class-id 7
 us-channel 0 channel-width 6400000 6400000
<<!snip>
Router#show run | sec cable upstream controller-profile 3
cable upstream controller-profile 3
 description Cox-upstream-prof-eg
 us-channel 0 chan-class-id 7
 us-channel 0 channel-width 6400000 6400000
 us-channel 0 docsis-mode atdma
 us-channel 0 equalization-coefficient
<<!snip>

Router#show run all | sec node1
cable rpd node1
 description rpd-cbr8-4
 identifier aaaa.bbbb.cccc
 type node
 <<!snip>>
 no rpd-ds 1 mute
 no rpd-ds 1 shutdown
 no rpd-us 0 base-power-rx-level-1_6Mhz
 no rpd-us 1 base-power-rx-level-1_6Mhz
<<!snip>>

Router#show run | sec node1                     
cable rpd node1
 description TB17-RPD2-3  HWaddr F4:DB:E6:FE:CC:E2
 identifier aaaa.bbbb.cccc
 core-interface Hu9/1/8
  principal
  rpd-ds 0 downstream-cable 9/0/4 profile 25
  rpd-us 0 upstream-cable 9/0/4 profile 3
  rpd-us 1 upstream-cable 9/0/5 profile 3
 r-dti 1
 rpd-event profile 0
 rpd-55d1-us-event profile 0

Feature Information for Controller Profile Configuration

Use Cisco Feature Navigator to find information about the platform support and software image support. Cisco Feature Navigator enables you to determine which software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to the https://cfnng.cisco.com/ link. An account on the Cisco.com page is not required.


Note

The following table lists the software release in which a given feature is introduced. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Table 2. Feature Information for Controller Profile Configuration

Feature Name

Releases

Feature Information

SG Based Config (OpSimp) Phase 2

Cisco IOS XE Fuji 16.7.1

This feature was introduced on Cisco IOS XE Fuji 16.7.1 on the Cisco cBR Series Converged Broadband Routers.