臺灣博碩士論文加值系統

近年來隨著科技的不斷發展，人們對於網路的依賴度及使用率節節攀升，身為通資網路維護者，須特別對用戶使用網路之需求滿意度及如何精確評估通資網路可靠度等問題予以重視。
我們為有效遂行通資網路維護作業，在各個節點的區間實施各種保護及復原技術，並在實體層、資料鏈結層及網路層評估網路的可靠度，惟目前可靠度的計算模型，大多僅依據網路拓樸結構進行可靠度評估，並未將光纜或銅纜等實際因素納入考量，在評估大型網路可靠度或分析網路傳輸較弱節點時，無法有效依據現況改善可靠度。
本研究針對網路傳輸徑路映射至實體層的傳輸路徑，依循系統頻寬滿意度來分析通資網路可靠度，觀點希冀能有效評估網路架構，進而提供網路維護者針對網路節點較弱部分進行加強作業。

In recent years, with the continuous development of information technology, the demand of network capacity is fast increasing. For telecommunication network maintenance, we should enhance the user satisfaction of network services and improve the network reliability.
Various protection and recovery technologies are implemented onto the links and nodes for making the network maintenance operate effectively. We develop an approach to evaluate network reliability and detect the weakest sections of the network. The prior researches for evaluating the network reliability were mostly focusing on the network topology rather than the physical layer.
In this thesis, a simplified method that is proposed for evaluating the reliability based on the network transmission paths which are mapped from the logical layer. For analyzing the network model, the focus is on the transmission path rather than the transmission section or node. This method allows to evaluating the network reliability faster and more accurate than the conventional methods.
The network bandwidth satisfaction and reliability is evaluated; and the results indicate that a reduced reliability is obtained for a higher bandwidth demand. By using the proposed method, the maintenance and management unit of the telecommunication networks can analyze and recovery the network rapidly under the situation of network attack.

目錄
摘要 I
ABSTRACT II
誌謝 III
目錄 IV
圖目錄 VII
表目錄 IX
第一章緒論
1.1研究動機
1.2研究背景
1.3 研究範圍
1.4研究架構
1.5 研究限制
第二章可靠度及路由協定之研究
2.1傳統點對點可靠度定義
2.1.1串聯
2.1.2並聯
2.1.3復原技術/保護技術
2.2網路層現行路由協定之研究
2.2.1 OSI模型
2.2.2 RIP、OSPF、EIGRP介紹
2.2.3 Dijkstra’s演算法
2.3 網路拓樸與傳輸路徑之關係
2.3.1文獻探討
2.3.2邏輯層與實體層之關係
2.3.3現實環境
第三章網路模型分析
3.1定義
3.2限制條件
3.3依循頻寬門檻及用戶滿意度發展可靠度指標
第四章可靠度模型建立與量測
4.1基礎模型分析
4.2路徑分析
4.2.1非最簡化之傳送路徑
4.2.2最簡化之傳送路徑
4.3歸納模型理論
第五章可靠度模型運用
第六章結論
6.1 成果
6.2 未來研究
參考文獻

參考文獻
[1] http://www.itu.int/rec/T-REC-G.705 /en
[2] http://www.itu.int/rec/T-REC-G.707/en
[3] http://www.itu.int/rec/T-REC-G.7041/en
[4] http://www.itu.int/rec/T-REC-G.7042/en
[5] http://www.itu.int/rec/T-REC-G.709/en
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