Preface

Identify the software features supported by the Cisco 6400 carrier-class broadband aggregator in Cisco IOS Release 12.2(4)B
Provide links to documentation for each feature
Describe deployment of features that are unique to the Cisco 6400
Supplement cross-platform feature information with information specific to the Cisco 6400, including descriptions, configuration and verification information, examples, prerequisites, and restrictions.

See the Supported Features chapter for a list of features supported by the Cisco 6400 in Cisco IOS Release 12.2(4)B. The Supported Features chapter also provides links to documentation for each feature. Some of the links go to other sections of this guide, while the rest of the links go to other documents available on Cisco.com.

Audience

This guide is designed for the system administrator who will be responsible for setting up the Cisco IOS software on the Cisco 6400. The system administrator should be familiar with the installation of high-end networking equipment.

This guide is intended primarily for the following audiences:

Customers with technical networking background and experience
Customers who support dial-in users
System administrators who are familiar with the fundamentals of router-based internetworking, but who may not be familiar with Cisco IOS software
System administrators who are responsible for installing and configuring internetworking equipment, and who are familiar with Cisco IOS software

Organization

The Cisco 6400 Feature Guide is organized into the following chapters and appendixes:

Chapter 1	Supported Features	Describes features supported in Cisco IOS Release 12.2(4)B and where to find feature information.
Chapter 2	Layer 2 Tunnel Protocol	Describes L2TP features.
Chapter 3	Multiprotocol Label Switching	Describes MPLS features.
Chapter 4	Point-to-Point Protocol	Describes PPP features.
Chapter 5	Session and Tunnel Scalability	Describes session and tunnel scalability parameters.
Chapter 6	Miscellaneous Features	Describes miscellaneous features.
Glossary	—	Provides technology definitions.

Conventions

This section describes the following conventions used by this guide:

Command Syntax

Descriptions of command syntax use the following conventions:

Convention	Description
boldface	Indicates commands and keywords that are entered literally as shown.
italics	Indicates arguments for which you supply values; in contexts that do not allow italics, arguments are enclosed in angle brackets (< >).
[x]	Keywords or arguments that appear within square brackets are optional.
{x \| y \| z}	A choice of required keywords (represented by x, y, and z) appears in braces separated by vertical bars. You must select one.
[x {y \| z}]	Braces and vertical bars within square brackets indicate a required choice within an optional element. You do not need to enter the optional element. If you do, you have some required choices.

Examples

Examples use the following conventions:

Convention	Description
screen	Shows an example of information displayed on the screen.
boldface screen	Shows an example of information that you must enter.
< >	Nonprinting characters, such as passwords, appear in angled brackets.
!	Exclamation points at the beginning of a line indicate a comment line. Exclamation points are also displayed by the Cisco IOS software for certain processes.
[ ]	Default responses to system prompts appear in square brackets.
prompt> prompt#	Examples that contain system prompts denote interactive sessions, indicating the commands that you should enter at the prompt. The system prompt indicates the current level of the EXEC command interpreter. For example, the prompt `router>` indicates that you should be at the user level, and the prompt `router#` indicates that you should be at the privileged level. Access to the privileged level usually requires a password.

Keyboard

This guide uses the following conventions for typing keys:

Convention	Description
Z	Keys are indicated in capital letters but are not case sensitive.
^ or Ctrl	Represents the Control key. For example, when you read ^D or Ctrl-D, you should hold down the Control key while you press the D key.

Notes, Timesavers, Tips, Cautions, and Warnings

The following conventions are used to attract the reader's attention:

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

TimeSaver Means the described action saves time. You can save time by performing the action described in the paragraph.

Tip Means the following information might help you solve a problem.

Caution Means reader be careful. You are capable of doing something that might result in equipment damage or loss of data.

Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.

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.com users (Cisco direct customers) can order Cisco product documentation from the Networking Products MarketPlace:

http://www.cisco.com/cgi-bin/order/order_root.pl

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 the Fax or Email option under the "Leave Feedback" at the bottom of the Cisco Documentation home page.

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, 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.

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