Table Of Contents

Preface

Document Objectives

Audience

Document Organization

Document Conventions

Related Documentation

Obtaining Documentation

World Wide Web

Documentation CD-ROM

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco.com

Technical Assistance Center

Cisco TAC Web Site

Cisco TAC Escalation Center

Preface

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This preface describes who should read the Cisco Application and Content Networking System (ACNS) Software Caching Configuration Guide, how it is organized, and its document conventions. This preface contains the following sections:

•Document Objectives

•Audience

•Document Organization

•Document Conventions

•Related Documentation

•Obtaining Documentation

•Obtaining Technical Assistance

Document Objectives

This guide explains how to deploy the Content Engine in three caching deployment scenarios as well as how to configure the policy features needed to control caching with the Content Engine using CLI commands.

Audience

This guide is intended for network system administrators familiar with Cisco router and switch configuration. An understanding of caching concepts is necessary. This guide is not a tutorial.

Document Organization

This guide includes the following chapters:

Chapter	Title	Description
Chapter 1	Cisco Cache Application Overview	Provides a basic product overview of the Content Engine and an introduction to caching along with explanations for the different network protocols involved in caching, and the three common deployment scenarios.
Chapter 2	Content Engine Management Configuration and Features	Contains procedures for managing the Content Engine using either the graphical user interface (GUI) or the command-line interface (CLI) and a table of the features configurable by the Content Engine.
Chapter 3	HTTP Caching Parameter Settings	Describes the caching parameter settings that need to be configured on the Content Engine.
Chapter 4	Streaming Media Overview	Describes how Windows Media Technology and RealProxy streaming media are supported on the Content Engine.
Chapter 5	Transparent Caching	Explains transparent caching and shows configuration examples relevant to the Content Engine.
Chapter 6	Proxy-Style Caching	Explains proxy-style caching and presents configuration examples relevant to nontransparent (proxy-style) caching with the Content Engine.
Chapter 7	Reverse Proxy Caching	Explains reverse proxy caching and shows configuration examples relevant to the Content Engine.
Chapter 8	Configuring a Primary Proxy Server	Explains how to assign primary Content Engines and how to configure failover.
Chapter 9	Configuring Windows Media Technologies Streaming Media Caching	Describes how Windows Media Technologies streaming media caching is configured on the Content Engine.
Chapter 10	Configuring RealNetworks RealProxy Streaming Media Caching	Describes how RealProxy streaming media caching is configured on the Content Engine.
Chapter 11	Configuring URL Filtering	Lists the different methods used to filter content based on URL lists.
Chapter 12	Configuring the Rules Template	Describes how to use the Rules Template to allow for requests using various request parameters.
Chapter 13	Configuring Authentication and Authorization	Discusses authentication support on the Content Engine.
Chapter 14	Configuring Transaction Logging	Explains transaction logging and describes the different transaction logging formats available with the Content Engine.
Chapter 15	Configuring Network Management	Explains how SNMP works and details additional network management agents available, including MIBs.
Chapter 16	Configuring TCP Stack Parameters	Describes TCP stack parameters and how best to optimize them for caching purposes.
Chapter 17	Miscellaneous Features	Describes miscellaneous features associated with the Content Engine.
Appendix A	Web Cache Communication Protocol Version 1	Describes WCCP Version 1.
Appendix B	Web Cache Communication Protocol Version 2	Describes WCCP Version 2.

Document Conventions

This guide uses basic conventions to represent text and table information.

Convention	Description
boldface font	Commands and keywords are in boldface.
italic font	Variables for which you supply values are in italics.
screen font	Terminal sessions and information the system displays are printed in screen font.
boldface screen font	Information you must enter is in boldface screen font.
italic screen font	Variables you enter are printed in italic screen font.
{ }	Elements in braces are required input.
[ ]	Elements in square brackets are optional.
{x | y | z}	Required alternative keywords are grouped in braces and separated by vertical bars.
[x | y | z]	Optional keywords are grouped in brackets and separated by vertical bars.

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Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in the manual.

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Caution 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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Related Documentation

For additional information on the Cisco Content Engine, refer to the following documentation:

•Cisco Content Networking Products Getting Started Guide, Release 4.2

•Cisco ACNS Software Command Reference, Release 4.2

•Cisco ACNS Software Maintenance and Troubleshooting Guide

•Cisco ACNS Software E-CDN Administrator's Guide, Release 4.2

•Cisco Content Networking Hardware Installation Guide for the Seven-Rack Unit Chassis

•Cisco Content Engine 500 Series Hardware Installation Guide

•Regulatory Compliance and Safety Information for the Cisco Content Networking Product Series

•Cisco Storage Array 6 Installation and Configuration Guide

•Cisco Storage Array 12 Installation and Configuration Guide

Obtaining Documentation

The following sections explain how to obtain documentation from Cisco Systems.

World Wide Web

You can access the most current Cisco documentation on the World Wide Web at the following URL:

http://www.cisco.com

Translated documentation is available at the following URL:

http://www.cisco.com/public/countries_languages.shtml

Documentation CD-ROM

Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.

Ordering Documentation

Cisco documentation is available in the following ways:

•Registered Cisco Direct Customers can order Cisco product documentation from the Networking Products MarketPlace:

http://www.cisco.com/public/ordsum.html

•Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:

http://www.cisco.com/go/subscription

•Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentation Feedback

If you are reading Cisco product documentation on Cisco.com, you can submit technical comments electronically. Click Leave Feedback at the bottom of the Cisco Documentation home page. After you complete the form, print it out and fax it to Cisco at 408 527-0730.

You can e-mail your comments to bug-doc@cisco.com.

To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address:

Cisco Systems
Attn: Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.

Cisco.com

Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.

Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a broad range of features and services to help you to

•Streamline business processes and improve productivity

•Resolve technical issues with online support

•Download and test software packages

•Order Cisco learning materials and merchandise

•Register for online skill assessment, training, and certification programs

You can self-register on Cisco.com to obtain customized information and service. To access Cisco.com, go to the following URL:

http://www.cisco.com

Technical Assistance Center

The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.

Inquiries to Cisco TAC are categorized according to the urgency of the issue:

•Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration.

•Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.

•Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.

•Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.

Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.

Cisco TAC Web Site

The Cisco TAC Web Site allows you to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to the following URL:

http://www.cisco.com/tac

All customers, partners, and resellers who have a valid Cisco services contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to the following URL to register:

http://www.cisco.com/register/

If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered user, you can open a case online by using the TAC Case Open tool at the following URL:

http://www.cisco.com/tac/caseopen

If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.

Cisco TAC Escalation Center

The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; these classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer will automatically open a case.

To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following URL:

http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml

Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled; for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). In addition, please have available your service agreement number and your product serial number.