研究生: |
嚴正祿 Louis Cheng-Lu Yeng |
---|---|
論文名稱: |
台灣高等學術網路國際段之網路可靠度研 Network Reliability Evaluation for the International Scope of Taiwan Advance Research and Education Network |
指導教授: |
林義貴
Yi-Kuei Lin |
口試委員: |
吳泰熙
none 姚銘忠 none 王孔政 none 陳正綱 none 葉維彰 none 廖經芳 none |
學位類別: |
博士 Doctor |
系所名稱: |
管理學院 - 管理研究所 Graduate Institute of Management |
論文出版年: | 2012 |
畢業學年度: | 100 |
語文別: | 英文 |
論文頁數: | 68 |
中文關鍵詞: | 網路可靠度 、隨機流量網路 、光通道 、最小光路徑 |
外文關鍵詞: | Network reliability, Stochastic-flow network, Light path, Minimal light path |
相關次數: | 點閱:340 下載:0 |
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在真實世界中,多數的網路系統是由處於不同狀態的元件所組成,它們有各種的效能狀態、也可能部份或全部失效,我們稱之為隨機流量網路。網路可靠度的定義是由來源端到終點間處於隨機流量狀態的各元件的最大傳輸量不低於特定需求量的機率。本論文專注於研究現時提供台灣學術界網路連結之用的台灣高等學術網路(TWAREN)國際段的效能。使用有效的評估工具以做出適當決策並改善網路效能是國家高速網路與計算中心的主要工作之一,我們提出了一種修正後的隨機流量網路模型,用來評估透過光通道傳輸資料的 TWAREN 網路可靠度、並做為計算其服務水準的績效指標。本論文研究 TWAREN 由台灣到美國間國際段陸面及海底線路的網路可靠度,並從單起點到單終點、多起點到單終點及多起點到多終點等三種面向及模型分析了解 TWAREN 的效能。並透過我們所研發的最小光路徑(minimal light paths)及演算法、與使用國外的研究先進在數年前所發展的遞迴不交和法(Recursive Sum of Disjoint Products) 來整合分析了解 TWAREN 國際段的整體網路效能。
In real-world, many systems are composed of some units of different states, which have various performance level, and may fully or partial fail which we call it stochastic-flow network (SFN). Network reliability is defined as the probability of delivering a maximal flow of no less than a specified requirement from source to sink. In this dissertation, we like to dedicate on the network reliability of a practical system - Taiwan Advance Research and Education Network (TWAREN), which is Taiwan’s academic research network that mainly provides network communication services for Taiwan’s research and academic society. We propose a modified SFN model to evaluate the network reliability of computer networks where data is transmitted through a light path (LP). It is taken as a performance index to measure the service level of TWAREN. This dissertation studies the network reliability of the international portion of TWAREN from Taiwan to the United States that goes through the submarine and the land surface cable. Using efficient evaluation tools to understand TWAREN’s performance in order to make proper decision and improve its infrastructure is the major tasks of Taiwan’s National High Performance Computing Center (NCHC). We analyze TWAREN in 3 models: 1) single source to single sink, 2) multiple sources to single sink, and 3) multiple sources to multiple sinks, to realize its performance. The problem formulations and SFN models are constructed in this dissertation, and in terms of minimal light paths and the algorithms that developed here, also integrate the Recursive Sum of Disjoint Products, we analyze the whole performance of TWAREN international scope in this paper.
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