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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


          E-LSP


          L-LSP


  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

Summary

References

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

Summary

References

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

Summary

References

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)

Summary

References

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?

Summary

References

Appendix A Command Reference for Cisco MPLS Traffic Engineering and RSVP

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