Implementing Cisco’s Converged Cable Access Platform (cBR-8)

cBR-8 is the next generation in Cisco’s series of CMTS (Cable Modem Termination System) platforms. Cisco’s uBR 10K (Universal Broadband Router) previously offered industry-leading CMTS functionality – the cBR-8 is now Cisco’s flagship CMTS offering. The Cisco cBR-8 CCAP (Converged Cable Access Platform) CMTS provides many technology advancements and performance enhancements, while reducing the overall cost per subscriber. These advanced capabilities include: four times the capacity (number of cable modems/subscribers per CMTS) at double the speed of currently available DOCSIS 3.0 solutions (10K). The cBR-8 provides maximum flexibility for the future adoption of innovative network architectures including Remote PHY (RPHY), SDN, and Virtual CMTS (vCMTS). The cBR-8’s native support of DOCSIS 3.1 allows cable operators to deliver ultra-broadband services with maximum downstream speeds approaching 10 Gbps per subscriber and 1 Gbps upstream. Note: Cisco 10K supports all versions up to DOCSIS 3.0. cBR-8 supports up to 3.1.

Retail Price: $4,595.00

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Course Days: 4

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Course Objectives:

You will learn the cBR-8 architecture, deployment best practices, security features, and perform key DOCSIS 3.0 and 3.1 configuration tasks during hands-on labs.



Following are the strongly recommended prerequisites for this cable training course:

  • NCTI DOCSIS Network Overview

Students should have foundational knowledge and/or experience with –

  • DOCSIS principles of operation
  • Cisco IOS Command Line Interface (CLI)


Target Audience:

This course is designed for technical professionals who need to know how to deploy Cisco CMTS and associated equipment. The primary audience for this course includes:

  • Cable Operator Network Operation Center personnel
  • System Engineer/Integrator/Solutions support personnel
  • Channel partners, resellers



  • DOCSIS Characteristics
  • Available Spectrum
  • TDM/TDMA/ATDMA/SCDMA and Channel types

cBR-8 Architecture and Hardware Overview

  • Hardware Overview
  • Chassis Installation
  • System Level Troubleshooting
  • Lab – Discovery

Software Overview and MAC Domain Configuration

  • cBR-8 Differences (versus uBR 10K)
  • Software and Configuration
  • Lab – Bringing up a MAC Domain
  • 1:2 Combining
  • Lab – 1 by 2 Combining

Bonding and Bonding Resiliency

  • Downstream Resiliency
  • Upstream Resiliency
  • Lab – Wideband Resiliency
  • Battery Backup

Security Features

  • Dynamic Shared Secret (DMIC)
  • Cable Source Verify
  • Cable ARP Filtering
  • BPI+ Policy Enforcement
  • Privacy Hotlist

DOCSIS Load Balancing

  • Basic DOCSIS Load Balancing CLI
  • Advanced DOCSIS Load Balancing Configuration
  • Verification and Troubleshooting
  • Lab – DOCSIS Load Balancing
  • Additional Load Balancing Features

cBR-8 Features

  • cBR-8 Call Home
  • Smart Licensing
  • High Availability for Supervisor and Line Card
  • cBR-8 Patching – Sub-Package Mode
  • cBR-8 CPU Protection
  • Punt Path Rate Limiting (PPRL)

DOCSIS 3.1 Architecture

  • Greenfield Reference Architecture
  • Physical Layer Properties
  • PHY Link Channel (PLC)
  • Modulation Characteristics
  • MAC and DOCSIS Upper Layers
  • MAC Protocol Operation
  • Cable Modem Registration (DOCSIS 3.1)

DOCSIS 3.1 Configuration

  • DOCSIS 3.1 Downstream
  • DOCSIS 3.1 Downstream Configuration
  • Downstream Verification
  • Lab – Configuring DOCSIS 3.1 Downstream
  • DOCSIS 3.1 Upstream
  • DOCSIS 3.1 Upstream Configuration
  • Upstream Verification
  • Lab – Configuring DOCSIS 3.1 Upstream

cBR-8 Modem Troubleshooting

  • Modem Registration flowchart
  • Cable modem MAC states
  • Modems failing registration or BPI+
  • Modems not coming up in wideband mode
  • General modem-focused troubleshooting
  • Lab – Troubleshooting


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