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QoS for IP/MPLS Networks

by: Santiago Alvarez

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On-line Price: TBAHardcoverpackage, 336

Retail Price: TBA

Publisher: CISCO PRESS,02/06/2006

Category: Cisco Level:

ISBN: 1587052334
ISBN13: 9781587052330

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A comprehensive guide to implementing QoS in IP/MPLS networks using Cisco IOS and Cisco IOS XR Software

Understand IP QoS architectures and how they apply to MPLS
Take a detailed look at traffic management using policing, shaping, scheduling, and active queue management
Study Cisco QoS behavioral model and the modular QoS command-line interface (MQC)
Learn the operation of MPLS TE with its DiffServ extensions and applicability as a traffic-protection alternative
Find multiple configuration and verification examples illustrating the implementation of MPLS TE, DS-TE, and FRR
Review the different designs, ranging from a best-effort backbone to the most elaborate scenarios combining DiffServ, DS-TE, and FRR
Quality of service (QoS) plays a key role in the implementation of IP and MPLS networks today. However, QoS can be one of the most complex aspects of networking. The industry efforts to achieve convergence have generated a need for increased levels of traffic differentiation. Today's networks need to meet an array of QoS requirements to support distinct applications (such as voice, video, and data) and multiple network services (such as IP, Ethernet, and ATM) on a single converged, multiservice network. QoS has therefore has become an integral part of network design, implementation, and operation.

QoS for IP/MPLS Networks is a practical guide that will help you facilitate the design, deployment, and operation of QoS using Cisco® IOS® Software and Cisco IOS XR Software. The book provides a thorough explanation of the technology behind MPLS QoS and related technologies, including the different design options you can use to build an MPLS network with strict performance requirements. This book discusses MPLS Traffic Engineering (MPLS TE) as a tool to complement MPLS QoS and enhance the performance characteristics of the network. You'll learn technology, configuration, and operational details, including the essentials facts about the behavior and configuration of the rich MPLS QoS and related MPLS TE functionality. To get the most out of this book, you should have a basic understanding of both IP and MPLS, including the basics of IP addressing and routing and the basics of MPLS forwarding.

Table of Contents

Chapter 1 QoS Technology Overview

  IP QoS Architectures

          Integrated Services

          Differentiated Services

MPLS Support for IntServ

MPLS Support for DiffServ



  DiffServ Tunneling Models over MPLS

Traffic-Management Mechanisms

  Traffic Classification

  Traffic Marking

  Traffic Policing

  Traffic Shaping

  Congestion Management

  Active Queue Management

  Link Fragmentation and Interleaving

  Header Compression

QoS Signaling

  Resource Reservation Protocol

  Other QoS Signaling Mechanisms



Chapter 2 MPLS TE Technology Overview

MPLS TE Introduction

Basic Operation of MPLS TE

  Link Information Distribution

  Path Computation

  TE LSP Signaling

  Traffic Selection

DiffServ-Aware Traffic Engineering

  Class-Types and TE-Classes

  Bandwidth Constraints

Fast Reroute

  Link Protection

  Node Protection



Chapter 3 Cisco QoS

Cisco QoS Behavioral Model

  Classification Component

  Pre-Queuing Component

  Queuing Component

  Post-Queuing Component

Modular QoS Command-Line Interface

  Hardware Support for the MQC

  Traffic-Management Mechanisms

  Hierarchical Configurations

  Percentage-Based Rates

  Parameter Units

  Processing of Local Traffic



Chapter 4 Cisco MPLS Traffic Engineering

Basic Operation of MPLS TE

  Enabling MPLS TE

  Defining a TE Tunnel Interface

  Link Information Distribution

  Using IS-IS for Link Information Distribution

  Path Computation

  Signaling of TE LSPs

  Traffic Selection

DiffServ-Aware Traffic Engineering (DS-TE)

Fast Reroute (FRR)



Chapter 5 Backbone Infrastructure

Backbone Performance

  Performance Requirements for Different Applications

  Segmentation of Performance Targets

  Factors Affecting Performance Targets

Latency Versus Link Utilization

Reference Network

  Edge Nodes

QoS Design Alternatives

  Best-Effort Backbone

  Best-Effort Backbone with MPLS TE

  DiffServ Backbone

  DiffServ Backbone with MPLS TE

  DiffServ Backbone with DiffServ-Aware Traffic Engineering

  Adding MPLS TE FRR

  What Design Should I Use?



Appendix A Command Reference for Cisco MPLS Traffic Engineering and RSVP