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QoS for IP/MPLS Networks

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QoS for IP/MPLS Networks

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Description

  • Copyright 2006
  • Dimensions: 7-3/8" x 9-1/8"
  • Edition: 1st
  • eBook (Watermarked)
  • ISBN-10: 0-13-343499-0
  • ISBN-13: 978-0-13-343499-6

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.

Sample Content

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

1587052334TOC051406

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