Cisco cBR Converged Broadband Routers Layer 2 and DOCSIS 3.1 Configuration Guide for Cisco IOS XE Everest 16.5.1
- Updated:
- April 4, 2018
Chapter: DOCSIS 3.1 Commanded Power for Upstream SC-QAMs
DOCSIS 3.1 Commanded
Power for Upstream SC-QAMs
This guide describes commanded power for upstream SC-QAMs on the Cisco cBR Router.
- Hardware Compatibility Matrix for Cisco cBR Series Routers
- Information About Commanded Power Feature for Upstream SC-QAMs
- Feature TLVs
- Additional References
- Feature Information for Commanded Power for US SC-QAMs
Hardware Compatibility Matrix for Cisco cBR Series Routers
 Note | The hardware components introduced in a given Cisco IOS-XE Release are supported in all subsequent releases unless otherwise specified. |
Information About Commanded Power Feature for Upstream SC-QAMs
To view the new commanded power levels pr upstream, use the following command:
Router# show cable modem [ ip-address | mac-address | cable {slot /subslot /cable-interface-index}] verbose
Note | DOCSIS 3.1 Commanded Power feature is enabled by default. |
Feature TLVs
TLVs Affected by Commanded Power for US SC-QAMs
The following table lists the TLVs affected by the DOCSIS 3.1 Ranging Response (RNG-RSP) Commanded Power for upstream SC-QAMs:
|
Name |
Type |
DOCSIS 3.1 Value |
|---|---|---|
|
Power Level Adjust |
2 |
TX Power offset adjustment (signed 8-bit, 1/4-dB units) |
|
Power Offset |
12.4.4 |
TX Power offset adjustment (signed 8-bit, 1/4-dB units) |
|
Dynamic Range Window Upper Edge |
14 |
The upper edge of the Dynamic Range Window expressed in units 1/4 dB below the max allowable setting (Phi) [DOCSIS PHYv3.0]. |
|
Commanded Power |
17 |
This TLV contains the Dynamic Range Window value, P1.6load_min_set as well as the Transmit Power Level for each of the channels in the CM's Transmit Channel Set, expressed in units of quarter dBmV. |
Commanded Power Sub-TLVs
The following table lists the sub-TLVs for DOCSIS 3.1 Commanded Power:
Additional References
Technical Assistance
|
Description |
Link |
|---|---|
|
The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
Feature Information for Commanded Power for US SC-QAMs
Use Cisco Feature Navigator to find information about 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 http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
Note | The table below lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature. |
|
Feature Name |
Releases |
Feature Information |
|---|---|---|
|
DOCSIS 3.1 Commanded Power for US SC-QAMs |
Cisco IOS XE Fuji 16.7.1 |
This feature was integrated on the Cisco cBR Series Converged Broadband Routers. |
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