ATM Traffic Management
About the Cisco 7200 Series Design Library
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About the Cisco 7200 Series Design Library

Table Of Contents

About the Cisco 7200 Series Design Library


Audience and Scope

Document Revision History

Organization and Use


Obtaining Documentation

Product Documentation DVD

Ordering Documentation

Documentation Feedback

Cisco Product Security Overview

Reporting Security Problems in Cisco Products

Obtaining Technical Assistance

Cisco Technical Support & Documentation Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information

About the Cisco 7200 Series Design Library

This chapter provides an introduction to the Cisco 7200 Series Design Library: ATM Traffic Management book in the Cisco 7200 Series design library.


The Cisco 7200 Series Design Library: ATM Traffic Management book is the first publication in the Cisco 7200 series design library. The purpose of the book is to provide you with the architectural and design concepts and guidelines that are necessary to understand for effective management of your ATM traffic on a Cisco 7200 series router.

Audience and Scope

This book is intended for ATM network engineers, designers, and network support personnel who configure and maintain the Cisco 7200 series router in their ATM network. It is expected that the reader is knowledgeable about ATM technology.

The book includes a wide range of topics that involve the processing of ATM traffic on the Cisco 7200 series router, including both the hardware and software aspects of that processing. It attempts to provide both the "big picture" by discussing the complete flow of traffic on the router and the key architectural concepts involved in that flow, and also provide the in-depth picture in those areas where optimization might occur to support your ATM traffic requirements.

Although some information is provided about all of the ATM port adapters that are supported on the Cisco 7200 series routers, the book primarily focuses on permanent virtual circuit (PVC) configuration on the PA-A3 and PA-A6 ATM port adapters.

Document Revision History

Table 1 records technical changes to this document. The table shows the document revision number for the change, the date of the change, and a brief summary of the change.

Table 1 Document Revision History

Change Summary


December 15, 2005

Second release, with the following revisions:

Revised statements about GTS and class-based shaping in Chapter 2 to read as follows:

"In most cases you do not use class-based shaping to implement traffic shaping on the outbound ATM interface. However, in certain Cisco IOS software releases, you can use the shape command within an outbound service-policy with the PA-A3 or PA-A6 ATM port adapters to achieve class-based shaping at Layer 3."

Removed reference to use of GTS on PA-A1 for nrt-VBR service because the PA-A1 does not support nrt-VBR class of service.

Updated this chapter with new information about Obtaining Documentation.


June 23, 2003

First release.

Organization and Use

This book contains the following chapters:

"Introduction to ATM Traffic Management on the Cisco 7200 Series Routers"—Provides a brief introduction to ATM traffic management, and begins a discussion of some of the concepts associated with traffic management on the Cisco 7200 series router as an edge device on the User-Network Interface (UNI).

"Cisco 7200 Series Architecture and Design for ATM Traffic Management"—Discusses the overall flow of ATM traffic on the Cisco 7200 series router, and the different hardware and software architectures that are part of that flow. These hardware and software components work together to affect the overall performance of the flow of a packet through the router and onto the network as ATM cells.

Chapter 3, "ATM Traffic Management Hardware and Software Planning"—Provides an introduction to the ATM port adapter hardware and software that is supported on the Cisco 7200 series routers. It includes hardware installation guidelines and verification information and a review of the Cisco IOS software releases supported by the Cisco 7200 series routers, including a summary of where certain key ATM features were introduced.

Chapter 4, "Preparing to Configure ATM Traffic Management and QoS Features"—Includes guidelines for preparing to configure ATM traffic management and QoS features and identifies tasks that you should implement as a regular and ongoing assessment of your network.

"Configuring Traffic Shaping on the PA-A3 and PA-A6 ATM Port Adapters"—Provides a combination of design and configuration information to help you make informed decisions about implementing and optimizing traffic shaping on your ATM port adapters.

"Configuring QoS on the Layer 3 Queues for the PA-A3 and PA-A6 ATM Port Adapters"—Provides a brief introduction and some guidelines for configuring the IP to ATM Class of Service (CoS) features on the PA-A3 and PA-A6 ATM port adapters.

"Configuring the Ring Limits on the PA-A3 and PA-A6 ATM Port Adapters"—Describes how to optimize the ring limits on the PA-A3 and PA-A6 ATM port adapters.

Chapter 8, "ATM Traffic Management Case Studies and Configuration Examples"—Provides case studies and configuration examples for enterprise networks using Cisco 7200 series routers in an ATM environment. All of the examples in this chapter represent actual lab-tested configurations from Cisco Systems proof-of-concept and solutions labs.

Chapter 9, "Frequently Asked Questions"—Answers some of the frequently asked questions (FAQs) about traffic management on the PA-A3 and PA-A6 ATM port adapters.


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