Recent advances in providing QoS and reliability in the future Internet backbone / Ning Wang, editor.

Format:

Book

Contributor:

Wang, Ning, 1974-

Series:

Computer science, technology and applications

Language:

English

Subjects (All):

Internet--Quality control.

Internet.

Computer networks--Quality control.

Computer networks.

Physical Description:

1 online resource (239 p.)

Edition:

1st ed.

Place of Publication:

Hauppauge, NY : Nova Science Publishers, c2011.

Language Note:

English

Summary:

With the advent of various emerging network services in recent years, the current best-effort based internet infrastructure has increasingly struggled in providing comprehensive support for these applications. Despite the QoS (Quality of Services) frameworks proposed in the 1990's, such as Integrated Services (IntServ) and Differentiated Services (DiffServ), large-scale deployments have not been seen across the global internet until now, and this slow progress has significantly hindered the development of the relevant services. In addition, network resilience to failures has become another major concern by today's ISPs (Internet Service Providers), as QoS assurance to end-users may be severely impacted by various failures which are very common in operational networks today.

Contents:

Intro

RECENT ADVANCES IN PROVIDING QOS AND RELIABILITY IN THE FUTURE INTERNET BACKBONE

CONTENTS

PREFACE

INTRODUCTION

SERVICE ASSURANCE: A KEY COMPONENT IN THE SERVICE DELIVERY

QOS AND RELIABILITY: CHALLENGES TO MEET BUSINESS OBJECTIVES

CONTRIBUTIONS FROM THIS BOOK

HOW THIS BOOK IS STRUCTURED?

Chapter 1 QOS BEYOND MYTH

ABSTRACT

1. INTRODUCTION

2. TWO DEFINITIONS FOR NETWORK QOS

3. QOS SERVICE PARAMETERS

4. NETWORK CONGESTION

5. SOME TYPICAL QOS MECHANISMS TO OVERCOME NETWORK CONGESTION

5.1. Schedulers

5.2. Schedulers and Bandwidth Allocation

5.3. Diffserv Approach: PHB and PDB

6. SOME ISSUES ABOUT QOS DEPLOYMENT

6.1. Who Needs to Adapt: Networks or Applications?

6.2. Where to Put QoS Mechanisms?

6.3. QoS Vs. over-Provisioning

6.4. QoS and Device Performance

6.5. QoS and Security

7. WHAT WE HAVE LEARNT FROM EXPERIENCE IN OPERATIONAL QOS DEPLOYMENT

CONCLUSION

REFERENCES

Chapter 2 DIFFERENTIATED QUEUEING SERVICE (DQS) FOR END-TO-END QOS PROVISIONING: AN EVALUATION FROM PER-FLOW, PER-CLASS TO PER-PACKET

2. OVERVIEW OF DIFFERENTIATED QUEUEING SERVICES (DQS)

3. END-TO-END QOS PROVISIONING

3.1. Per-Hop Service (PHS)

3.2. QoS Granularity

3.3. End-to-End QoS Solutions

3.4. Issues on Interoperability between DQS, IntServ and DiffServ

4. IMPLEMENTATION ISSUES

4.1. Output Scheduler

4.2. Queue Structures

4.3. Buffer Admission Control (BAC)

4.4. Call Admission Control (CAC)

5. REMARKS

6. CONCLUSION

ACKNOWLEDGMENT

Chapter 3 ADMISSION CONTROL AND NETWORK CAPACITY MANAGEMENT FOR FUTURE IP QUALITY OF SERVICE

2. QOS REQUIREMENTS OF REAL-TIME TRAFFIC.

3. ADMISSION CONTROL SCHEMES FOR REAL-TIME TRAFFIC

4. NETWORK CAPACITY MANAGEMENT

4.1. Implication for Bandwidth Allocation and Admission Control

4.2. Practical Traffic Engineering Solutions

5. ADMISSION CONTROL

5.1. Admission Control for Intra-Domain Traffic

5.1.1. Admission Control Logic

5.1.2. Performance Evaluation

5.1.3. Discussion of the Simulation Results

5.1.4. Conclusions

5.2. Admission Control for Inter-Domain Traffic

5.2.1. End-to-End QoS Model

5.2.1.1. Deployment in an Intserv over Diffserv Environment

5.2.1.2. Deployment in the Context of a Cascaded QoS Model

5.2.2. Admission Control Logic

5.2.3. Performance Evaluation

5.2.4. Discussion

5.2.5. Conclusions

Chapter 4 PERFORMANCE MEASUREMENT AND OPTIMIZATION FOR RELATIVE QOS OF MULTIPARTY COMMUNICATIONS

2. ONE-TO-GROUP PARAMETERS AND METRICS

2.1. The New Terms for One-to-Group Metrics

2.2. One-to-Group Metrics

2.3. One-to-Group Sample Statistics

2.4. Discussion on Group-to-One and Group-to-Group Metrics

3. RELATIVE QOS OPTIMIZATION ALGORITHM FOR MULTIPARTY COMMUNICATIONS USING ONE-TO-GROUP METRICS

3.1. Algorithm Environment Assumptions

3.2. Class Modification for Multicast Traffic

3.3. Simulation for the Relative Qos Optimisation Algorithm

4. CONCLUSIONS

Chapter 5 QOS DEPLOYMENT AND OPERATION ON SUPERJANET, THE UK ACADEMIC AND EDUCATIONAL RESEARCH NETWORK

1.1. Recent Developments in QoS

1.2. QoS on SuperJANET

2. QOS DEVELOPMENT PROJECT PHASE 1

2.1. Network Configuration

2.2. Testing Process

2.3. Testing Results

2.4. Phase 1 Summary and Analysis

3. QOS DEVELOPMENT PROJECT PHASE 2

3.1. QoS Deployment Efforts

3.2. QoS-Enabled JVCS Trial

3.3. LBE Evaluation.

3.4. JANET (UK) Approach to QoS

4. ANALYSIS OF OUR RESULTS

5. CONCLUSION

ACKNOWLEDGMENTS

Chapter 6 AN ARCHITECTURAL FRAMEWORK FOR INTER-DOMAIN QUALITY OF SERVICE MONITORING TO SUPPORT SERVICE ASSURANCE AND RESOURCE MANAGEMENT*

2. OVERVIEW OF NETWORK MONITORING AND MEASUREMENT ACTIVITIES

3. MONITORING IN MULTI-DOMAIN ENVIRONMENT

4. MONITORING SYSTEM ARCHITECTURE

4.1. Monitoring System Components

4.2. QoS Interconnection Models and the Inter-Domain Monitoring System

4.2.1. Monitoring System in the Source-Based Interconnection Environment

4.2.2. Monitoring System in the Cascaded Interconnection Environment

4.2.3. Monitoring System in the Bilateral Interconnection Environment

5. CONCLUSIONS

Chapter 7 INTERCONNECTION MODELS FOR QOS-BASED IP SERVICE OFFERING

2. DEFINITIONS AND TERMS

2.1. Qos-Classes

3. QOS-CLASS OPERATIONS

4. INTER-DOMAIN QOS MODELS

4.1. Source-Based Model

4.2. Cascaded Model

4.3. Bilateral Model

4.3.1. QoS-Enhanced Border Gateway Protocol (q-BGP)

5. BI-DIRECTIONALITY SUPPORT FOR COMPLEX CONNECTIVITY SERVICES

5.1. Bi-Directionality Support in the Source-Based Model

5.1.1. Bi-Directionality Support in the Cascaded Model

5.1.2. Single Cascade

5.1.3. Multiple Unidirectional Cascades

5.2. Bi-Directionality Support in the Bilateral Model

6. TARGET SERVICES

7. IMPLEMENTING AND EVALUATING THE QOS-ENABLED INTERNET

7.1. The Testbed Configuration

7.1.1. q-BGP Configuration

7.2. Experimental Results

7.2.1. PSLS Set-up Operation

7.2.2. q-BGP Route Selection

8. CONCLUSION

Chapter 8 INTER-DOMAIN PATH COMPUTATION WITH MULTIPLE QOS CONSTRAINTS

2. THE INTER-DOMAIN MCP PROBLEM.

2.1. Multi-Constrained Path Computation

2.2. Inter-Domain Path Computation

2.3. Requirements for the Inter-Domain MCP Problem

3. APPROACHES FOR COMPUTING INTER-DOMAIN MCPS

3.1. Elements of Distributed Solutions

3.1.1. Per-Domain Problem

3.1.2. Solution of the Per-Domain Problem

3.1.3. Propagation and Combination of the Per-Domain Results

3.2. Proposed Approaches for Inter-Domain MCP

3.2.1. Online Computation Approach

3.2.2. Autonomous Computation

3.2.3. Comparison of the Proposed Approaches

4. FROM BEST EFFORT ACTUAL NETWORKS TO QOS-ABLE NEXT GENERATION NETWORKS

4.1. Toward QoS-Aware IP Networks

4.2. Toward QoS-Aware Next Generation Networks

4.3. The QoS Inter-Domain Routing during the Transition from IP to NGN

Chapter 9 COMBINING INTELLIGENT ROUTE CONTROL WITH BACKBONE TRAFFIC ENGINEERING TO DELIVER GLOBAL QOS-ENABLED SERVICES

2. INTELLIGENT ROUTING CONTROL FRAMEWORK

2.1. Design Principles

2.1.1. Decoupled Performance/QoS Routing Control from BGP

2.1.2. Fast Link/QoS Failure Reaction and Recovery

2.1.3. Being Centered on User's Perceived QoS Level.

2.2. IRC Key Functions

2.2.1. Path Monitoring

2.2.2. Dynamic Path Switching

2.2.3. Shifting Traffic over ISPs

2.3. Simulation Study

2.3.1. Performance Metrics and Objectives

2.3.2. Results

3. COMBINING IRC WITH BACKBONE TRAFFIC ENGINEERING

3.1. Backbone Traffic Engineering Heuristics

3.2. IRC-TE Cooperative Framework

3.3. Utility-Based IRC Algorithm

3.4. Simulation Evaluation

4. CONCLUSION

Chapter 10 SELF-PROTECTING MULTIPATHS (SPM): EFFICIENT RESILIENCE FOR TRANSPORT NETWORKS

1.1. Basic SPM

1.2. Integer SPM (iSPM)

1.3. Failure-Specific SPM (fSPM).

2. COMPARISON WITH OTHER RESILIENCE MECHANISMS

2.1. Resilience Mechanisms for Similar Environments

IP Routing and Rerouting

End-to-End Protection Using Explicit Primary and Backup Paths

MPLS Fast Reroute

IP Fast Reroute

Other Mechanisms

2.2. Resilience Mechanisms with Similar Structures

Demand-Wise Shared Protection

Protection Cycles

TeXCP

3. OPTIMIZED CONFIGURATION OF THE SPM

3.1. Path Layout

3.2. Modelling Spms for Linear Programs

General Notation

Network Concepts

Failure Scenarios

Load Balancing Functions

3.3. Optimization of Load Balancing Functions for Capacitated Networks

3.4. Joint Optimization of Load Balancing Functions and Link Capacities

3.5. Optimization of the iSPM

3.6. Optimization of the fSPM

4. PERFORMANCE RESULTS

4.1. Impact of Network Structure on Backup Efficiency

4.2. Traffic Loss Due to Unprotected Multi-Failures

Chapter 11 RELIABILITY ANALYSIS OF PROTECTION METHODS FOR THE FUTURE INTERNET BACKBONE

1. INTRODUCTION: PRIMER ON RELIABILITY MODELING

1.1. Reliability Measures

1.2. Reliability of Complex Structures

2. OVERVIEW OF PROTECTION METHODS

3. EXAMPLES OF MODELING

3.1. Example 1: Unprotected Connection

3.2. Example 2: Dedicated Protection

3.3. Example 3: Unidirectional Path-Switched Ring

3.4. Example 4: Shared Protection

3.5. Example 5: Bidirectional Protection Rings vs. p-Cycles

5. PROBLEMS TO SOLVE

INDEX

Blank Page.

Notes:

Includes index.

Description based on print version record.

ISBN:

1-61122-386-5

OCLC:

831625593