Cisco cBR Series Configuration Guide

Cisco Network Registrar Description 39
Overview of DHCP Using CNR 40
How Cisco Converged Broadband Routers and Cable Modems Work 41
DHCP Fields and Options for Cable Modems 42
Cisco Network Registrar Sample Configuration 43
Cable Modem DHCP Response Fields 45
DOCSIS DHCP Fields 45
DHCP Relay Option (DOCSIS Option 82) 46
Overview of Scripts 46
Two-way Cable Modem Scripts 46
Telco Return Cable Modem Scripts 46
Placement of Scripts 47
Windows NT 47
Solaris 47
Activating Scripts in Cisco Network Registrar 47
Configuring the Cisco CMTS Routers to Use Scripts 47
Configuring the System Default Policy 48
Cable Modems 48
PCs 48
Creating Selection Tag Scopes 48
General 48
Telco Return for the Cisco cBR-8 Router 49
Creating Network Scopes 49
Creating Policies for Class of Service or for Upgrading Cable Modem Cisco IOS Images 50
CNR Steps to Support Subinterfaces 50
Additional References 51
Cisco cBR Series Converged Broadband Routers Application—Voice and Video Configuration Guide
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Contents

Cisco cBR Series Specifications

General

Category	Network Router
Modular Design	Yes
Operating System	Cisco IOS XE
Model Examples	cBR-8, cBR-4
Product Series	cBR Series
Purpose	Converged Broadband Router
DOCSIS Support	DOCSIS 3.1
Redundancy	Yes
Management	Cisco Prime
Product Family	cBR Series
Downstream Frequency Range	Up to 1.2 GHz
Upstream Frequency Range	Up to 204 MHz
Modulation Schemes	QAM
Power Supply	Redundant AC or DC power supplies
Operating Temperature	0°C to 40°C
Storage Temperature	-40°C to 70°C
Humidity	5 to 95% noncondensing