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- Downstream Interface Configuration
- Upstream Interface Configuration
- DOCSIS Interface and Fiber Node Configuration
- DOCSIS Load Balancing Groups
- DOCSIS Load Balancing Movements
- DOCSIS 3.0 Downstream Bonding
- DOCSIS 2.0 A-TDMA Modulation Profiles
- Downstream Resiliency Bonding Group
- Downstream Channel ID Assignment
- Upstream Channel Bonding
- Spectrum Management and Advanced Spectrum Management
- Upstream Scheduler Mode
- Generic Routing Encapsulation
- Transparent LAN Service over Cable
- Downgrading Channel Bonding in Battery Backup Mode
- Energy Management Mode
- Upstream Bonding Support for D-PON
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- IP Access Control Lists
- Creating an IP Access List and Applying It to an Interface
- Creating an IP Access List to Filter IP Options, TCP Flags, Noncontiguous Ports
- Refining an IP Access List
- IP Named Access Control Lists
- IPv4 ACL Chaining Support
- IPv6 ACL Chaining with a Common ACL
- Commented IP Access List Entries
- Standard IP Access List Logging
- IP Access List Entry Sequence Numbering
- ACL IP Options Selective Drop
- ACL Syslog Correlation
- IPv6 Access Control Lists
- IPv6 Template ACL
- IPv6 ACL Extensions for Hop by Hop Filtering
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- Call Home
- SNMP Support over VPNs—Context-Based Access Control
- SNMP Cache Engine Enhancement
- Onboard Failure Logging
- Control Point Discovery
- IPDR Streaming Protocol
- Usage-Based Billing (SAMIS)
- Frequency Allocation Information for the Cisco CMTS Routers
- Flap List Troubleshooting
- Maximum CPE and Host Parameters
- SNMP Background Synchronization
- Online Offline Diagnostics
- Index
- Finding Feature Information
- Hardware Compatibility Matrix for Cisco cBR Series Routers
- Information About Downstream Interface Configuration
- How to Configure Downstream Interfaces
- Configuration Examples
- Additional References
- Feature Information for Downstream Interface Configuration on the Cisco cBR Router
Downstream Interface
Configuration
This document describes how to configure the downstream interfaces on the Cisco cBR Series Converged Broadband Router.
- Finding Feature Information
- Hardware Compatibility Matrix for Cisco cBR Series Routers
- Information About Downstream Interface Configuration
- How to Configure Downstream Interfaces
- Configuration Examples
- Additional References
- Feature Information for Downstream Interface Configuration on the Cisco cBR Router
Finding Feature Information
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://tools.cisco.com/ITDIT/CFN/. An account on http://www.cisco.com/ is not required.
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. |
Cisco CMTS Platform |
Processor Engine |
Interface Cards |
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Cisco cBR-8 Converged Broadband Router |
Cisco IOS-XE Release 3.15.0S and Later Releases Cisco cBR-8 Supervisor:
|
Cisco IOS-XE Release 3.15.0S and Later Releases Cisco cBR-8 CCAP Line Cards: Cisco cBR-8 Downstream PHY Modules: Cisco cBR-8 Upstream PHY Modules: |
Information About Downstream Interface Configuration
Overview
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Each downstream port requires port level configuration and channel level configuration. Port level configuration is optimized with a frequency profile that defines ranges of frequencies available on the port. Channel level configuration is optimized with a QAM profile and channel range configuration block that auto-increments frequency and duplicates annex, modulation, and interleaver.
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Each channel requires a set of parameters: frequency, annex, modulation, interleaver, and DOCSIS channel id.
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Configuration is done in 4 major blocks of configuration:
Downstream RF Port and Channel Management
The downstream RF port and channel management feature is responsible for the configuration and management of the downstream RF ports and channels. Each downstream RF channel can be provisioned either as a DOCSIS or traditional MPEG video QAM channel.
QAM Profile
A QAM profile describes the common downstream channel modulator settings, referred to as physical layer parameters. This includes QAM constellation, symbol rate, interleaver-depth, spectrum-inversion, and annex. The QAM profile is described by CCAP DownPhyParams object. Default QAM profiles are supported and customized for DOCSIS or MPEG Video, which are described as DocsisPhyDefault and VideoPhyDefault objects, respectively.
A maximum of 32 QAM profiles can be defined. There are four system-defined QAM profiles (0 to 3), which cannot be deleted or modified. You can define profiles 4 to 31.
The system defined profiles are:
Frequency Profile
A frequency profile defines the ranges of frequencies available on a port. A maximum of 16 frequency profiles can be defined. There are four system-defined frequency profiles (0 to 3), which cannot be deleted or modified. You can define profiles 4 to 15.
The system defined profiles are:
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Profile 0 - annex-b-low, Frequency range (Hz): 90000000 - 863999999
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Profile 1 - annex-b-high, Frequency range (Hz): 234000000 - 1002999999
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Profile 2 - annex-a-low, Frequency range (Hz): 94000000 - 867999999
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Profile 3 - annex-a-high, Frequency range (Hz): 267000000 - 1002999999
The frequency ranges are defined using lanes and blocks:
How to Configure Downstream Interfaces
This section contains the following:
- Configuring the Cisco CMTS Manually Using Configuration Mode
- Configuring the QAM Profile on the Downstream Channels
- Configuring the Frequency Profile on the Downstream Channels
- Configuring the Controller on the Downstream Channels
- Configuring the RF Channel on a Controller
Configuring the Cisco CMTS Manually Using Configuration Mode
Connect a console terminal to the console port on the I/O controller. When asked if you want to enter the initial dialog, answer no to go into the normal operating mode of the router. After a few seconds the user EXEC prompt (Router>) appears.
Configuring the QAM Profile on the Downstream Channels
Configuring the Frequency Profile on the Downstream Channels
Configuring the Controller on the Downstream Channels
Configuring the RF Channel on a Controller
The RF channel submode is entered from the channel controller configuration submode using the rf-chan command as described in the previous section. If an individual channel was specified in the rf-chan command, only that channel configuration is changed. If a block of channels was specified in the rf-chan command, the configuration change is applied to all channels in the block.
Configuration Examples
Downstream Interface Configuration Example
cable downstream qam-profile 1 annex B modulation 256 interleaver-depth I32-J4 symbol-rate 5361 spectrum-inversion off description default-annex-b-256-qam cable downstream freq-profile 0 lane 1 start-freq 90000000 block 1 start-freq 90000000 block 2 start-freq 138000000 block 3 start-freq 186000000 block 4 start-freq 234000000 lane 2 start-freq 282000000 block 1 start-freq 282000000 block 2 start-freq 330000000 block 3 start-freq 378000000 block 4 start-freq 426000000 lane 3 start-freq 474000000 block 1 start-freq 474000000 block 2 start-freq 522000000 block 3 start-freq 570000000 block 4 start-freq 618000000 lane 4 start-freq 666000000 block 1 start-freq 666000000 block 2 start-freq 714000000 block 3 start-freq 762000000 block 4 start-freq 810000000 controller Integrated-Cable 3/0/0 max-carrier 128 base-channel-power 34 freq-profile 0 rf-chan 0 95 type DOCSIS frequency 93000000 rf-output NORMAL power-adjust 0 docsis-channel-id 1 qam-profile 1
Show Command Examples for Displaying the State
Use the following commands to display the state of any QAM profile, Frequency profile, downstream controller or channel.
QAM Profile Configuration Example
Router#show cable qam-profile 0 QAM Profile ID 0: default-annex-b-64-qam annex: B modulation: 64 interleaver-depth: I32-J4 symbol rate: 5057 kilo-symbol/second spectrum-inversion: off Router#
Frequency Profile Configuration Example
Router#show cable freq-profile 0 Frequency Profile ID 0 annex-b-low: Lane 1 start-freq 90000000hz Block 1 start-freq 90000000hz Block 2 start-freq 138000000hz Block 3 start-freq 186000000hz Block 4 start-freq 234000000hz Lane 2 start-freq 282000000hz Block 1 start-freq 282000000hz Block 2 start-freq 330000000hz Block 3 start-freq 378000000hz Block 4 start-freq 426000000hz Lane 3 start-freq 474000000hz Block 1 start-freq 474000000hz Block 2 start-freq 522000000hz Block 3 start-freq 570000000hz Block 4 start-freq 618000000hz Lane 4 start-freq 666000000hz Block 1 start-freq 666000000hz Block 2 start-freq 714000000hz Block 3 start-freq 762000000hz Block 4 start-freq 810000000hz Router#
Controller Configuration Example
Router#show controller Integrated-Cable 3/0/0 rf-port Admin: UP MaxCarrier: 128 BasePower: 34 dBmV Mode: normal Rf Module 0: UP Frequency profile: 0 Free freq block list has 1 blocks: 666000000 - 863999999 Rf Port Status: UP Router#
RF Channel Configuration Example
Router#show controller integrated-Cable 3/0/0 rf-channel 0-3 95 Chan State Admin Frequency Type Annex Mod srate Interleaver dcid power output 0 UP UP 93000000 DOCSIS B 256 5361 I32-J4 1 34 NORMAL 1 UP UP 99000000 DOCSIS B 256 5361 I32-J4 2 34 NORMAL 2 UP UP 105000000 DOCSIS B 256 5361 I32-J4 3 34 NORMAL 3 UP UP 111000000 DOCSIS B 256 5361 I32-J4 4 34 NORMAL 95 UP UP 663000000 DOCSIS B 256 5361 I32-J4 96 34 NORMAL Router# show controller integrated-Cable 3/0/0 rf-channel 0 verbose Chan State Admin Frequency Type Annex Mod srate Interleaver dcid power output 0 UP UP 93000000 DOCSIS B 256 5361 I32-J4 1 34 NORMAL Qam profile: 1 Spectrum Inversion: Off Frequency Lane: 1 Block: 1 index: 1 Resource status: OK License: granted <02:00:04 EDT Jan 2 2012> JIB channel number: 0 Chan EnqQ Pipe RAF SyncTmr Vid Mac Video Primary DqQ TM Mpts Sniff 0 0 0 4 0 0 0000.0000.0000 0 0 0 0 0 NO Grp Prio P Prate Phy0-ctl Phy1-ctl Enable Tun-Id L2TPv3_Ses_id 0 0 0 1 1 0 TRUE 0 0 Chan Qos-Hi Qos-Lo Med-Hi Med-Lo Low-Hi Low-Lo 0 32774 16384 32768 16384 65536 32768 Chan Med Low TB-neg Qos_Exc Med_Xof Low_Xof Qdrops Pos Qlen(Hi-Med-lo) Fl 0 0 0 0 0 0 0 0 Y 0 0 0 0 DSPHY Info: DSPHY Register Local Copy: QPRHI = c0000163, QPRLO = e30d0 DSPHY Register Local Copy Vaddr = 80000290, qam2max_mapping = 80000000 DSPHY Register Local Copy: SPR ID = 0, SPR Mapping= c200000a Last read from HW: Mon Jan 2 02:02:04 2012 QPRHI = c0000163, QPRLO = e30d0, SPR = c200000a SPRMAPING c0000000 Q2Max 80000000 Last time read spr rate info from HW: Mon Jan 2 13:21:41 2012 SPR ID 0, rate value in kbps 0, overflow count 0, underflow count 0 Router#show controllers Integrated-Cable 3/0/0 counter rf-channel Controller RF MPEG MPEG MPEG Sync MAP/UCD Chan Packets bps Mbps Packets Packets Tx Tx Tx 3/0/0 0 6 0 0.000000 0 6 3/0/0 1 6 0 0.000000 0 6 3/0/0 2 6 0 0.000000 0 6 3/0/0 3 6 0 0.000000 0 6 3/0/0 4 6 0 0.000000 0 6 3/0/0 5 6 0 0.000000 0 6 3/0/0 6 6 0 0.000000 0 6 3/0/0 7 6 0 0.000000 0 6 3/0/0 8 5124124 1381035 1.332459 329444 6531411 Router# show cable licenses ds -------------------------------------------- Entitlement: Downstream License Consumed count: 672 Consumed count reported to SmartAgent: 672 Forced-Shut count: 0 Enforced state: No Enforcement Router#
Additional References
Technical Assistance
Description | Link |
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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 Downstream Interface Configuration on the Cisco cBR Router
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://tools.cisco.com/ITDIT/CFN/. An account on http://www.cisco.com/ is not required.
Note | The below table 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 |
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Downstream Interface Configuration |
Cisco IOS-XE 3.15.0S |
This feature was introduced on the Cisco cBR Series Converged Broadband Router. |