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This preface explains the objectives, intended audience, and organization of the Cisco CMTS Software Configuration Guide. The section also defines the conventions used to convey instructions and information.
This guide describes the procedures necessary to configure, maintain, and troubleshoot the initial configuration for the following Cisco universal broadband routers:
The routers comprise Cisco's Cable Modem Termination System (CMTS) solutions that allow cable companies, Internet service providers (ISPs), and others to allocate channel capacity for Internet access, Virtual Private Network (VPN), and Voice over IP (VoIP) services using a broadband radio frequency (RF) cable plant.
The Cisco CMTSs sustain downstream and upstream traffic to and from two-way Data Over Cable Service Interface Specification (DOCSIS)-based cable modems (CMs) that support 6 MHz National Television Systems Committee (NTSC) operations. For NTSC cable plants that have not been upgraded for full two-way operations, the routers also support DOCSIS-compliant telco-return cable modems.
For international cable companies using 8 MHz channel widths, the Cisco CMTS equipment supports Phase Alternating Line (PAL) and Systeme Electronique Couleur Avec Memoire (SECAM) channel plans to operate with EuroDOCSIS-based CMs and set top box (STB) units with integrated EuroDOCSIS modems.
This guide is intended for system administrators and support engineers who configure and maintain the Cisco CMTS. Many different delivery models exist for Cisco CMTS equipment:
How the MSO and ISP divide responsibilities depends on the service model. In some cases, the MSO maintains and operates the cable plant and attached CMs and STBs, while the ISP owns, operates, and maintains the regional network and IP infrastructure beyond the cable distribution hub. In other cases, the CMTS and RF customer premises equipment (CPE) are viewed as part of the networking infrastructure, and the ISP maintains control for provisioning and managing DOCSIS functionality.
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Note This guide considers the MSO and ISP as a single service principle with responsibility to provision and manage DOCSIS-based cable modems and set top boxes. The guide assumes administrators are familiar with Cisco CMTS hardware, DOCSIS or EuroDOCSIS requirements, and networking. |
This guide includes the following chapters:
| Chapter | Title | Description |
|---|---|---|
1 | Acquaints you with the Cisco CMTS and Cisco IOS software. | |
2 | Provides instructions to configure the Cisco CMTS using AutoInstall, the Setup Facility, or manual Configuration Mode. Includes sample Cisco uBR7200 series configurations. | |
3 | Describes system engineering, summarizes key features, and details the command line interface (CLI) that is used to configure system parameters. Includes Generic Routing Encapsulation (GRE) tunneling and IPSec configuration examples. | |
4 | Provides troubleshooting instructions for the initial CMTS configuration. |
Command descriptions use the following conventions:
| Convention | Description |
|---|---|
boldface font | Commands and keywords are in boldface. |
italic font | Arguments for which you supply values are in italics. |
[ ] | Elements in square brackets are optional. |
{x | y | z} | Alternative, mutually exclusive, keywords are grouped in braces and separated by vertical bars. |
[x | y | z] | Optional alternative keywords are grouped in brackets and separated by vertical bars. |
string | A nonquoted set of characters. Do not use quotation marks around the string or the string will include the quotation marks. |
| Terminal sessions and information the system displays are in |
boldface screen font | Information you must enter is in boldface screen font. |
italic screen font | Arguments for which you supply values are in italic screen font. |
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^ | The symbol ^ represents the key labeled Control—for example, the key combination ^D in a screen display means hold down the Control key while you press the D key. |
< > | Nonprinting characters, such as passwords, are in angle brackets. |
[ ] | Default responses to system prompts are in square brackets. |
!, # | An exclamation point ( ! ) or a pound sign ( # ) at the beginning of a line of code indicates a comment line. |
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Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the publication. |
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Tips Means the following are useful tips. |
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Caution This symbol means reader be careful. In this situation, you might do something that could result in equipment damage or loss of data. |
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Posted: Mon Oct 2 13:13:32 PDT 2000
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