Performance monitoring in communication networks

........................................................................................................... 1 PREFACE ............................................................................................................... 3 ACKNOWLEDGEMENTS.......................................................................................... 5 PURPOSE AND CONTRIBUTION ............................................................................ 11 OUTLINE OF THE THESIS ..................................................................................... 13 CHAPTER I: INTRODUCTION ................................................................................................... 15 1. Communication Networks....................................................................... 15 2. Management of Communication Networks............................................. 16 3. Performance Management of Communication Networks........................ 18 CHAPTER II: PERFORMANCE MONITORING IN DATAGRAM NETWORKS ................................... 21 1. Applications and Objectives.................................................................... 21 2. International Standardisation................................................................... 21 3. Monitoring of Service Level Agreements ............................................... 23 4. Prerequisites ............................................................................................ 23 5. Measurement Methods ............................................................................ 24 6. Monitoring at the Network Level ............................................................ 25 7. End-to-End Monitoring of Communication Services.............................. 28 8. Directly Related Work ............................................................................ 28 CHAPTER III: A TRAFFIC FLOW PERFORMANCE METER ........................................................... 31 1. Purpose and Design................................................................................. 31 2. An Embedded Monitoring System .......................................................... 33 3. A Stand-Alone Traffic Flow Performance Meter .................................... 56 4. Applications ............................................................................................ 64 5. System Aspects of the Method ................................................................ 66 6. Statistical Aspects of the Method ............................................................ 69 7. Evaluation of the Method ........................................................................ 80 CHAPTER IV: PERFORMANCE MONITORING IN VIRTUAL CIRCUIT NETWORKS.......................... 83 CHAPTER V: SUMMARY AND FUTURE WORK .......................................................................... 87 LIST OF PUBLICATIONS ....................................................................................... 91 REFERENCES ....................................................................................................... 93 APPENDIX A:......................................................................................................101 Results from Laboratory Tests of a Performance Flow Meter Using NeTraMet APPENDIX B:......................................................................................................115 Statistical Properties of Measurement and Simulation Data Used in the Thesis