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研究生:李昇峰
研究生(外文):Sheng-Feng Lee
論文名稱:光波長劃分多工網路之路徑保護機制研究
論文名稱(外文):Studt of the Path Protection in DWDM Networks
指導教授:陳彥文陳彥文引用關係
指導教授(外文):Yen-Wen Chen
學位類別:碩士
校院名稱:國立中央大學
系所名稱:通訊工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:75
中文關鍵詞:可靠度故障管理路由恢復保護切換高密度/光波長劃分多工技術
外文關鍵詞:ReliabilityFault ManagementRestorationProtection SwitchDWDM
相關次數:
  • 被引用被引用:1
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  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:1

在全光的WDM/DWDM網路中,為了能確保與滿足各種不同寬頻網路服務的需求,所以無論何種網路架構都必須提供良好的路徑保護切換(Protection Switch)與動態路由恢復(Dynamic Restoration)機制以避免網路不預期的發生故障(Failure)而造成大量的資料流失。故本論文將著重於討論光纖網路控制與故障管理技術的研究,對於在WDM/DWDM的網路架構下,提供良好的網路保護和恢復能力。因此,本論文研究將針於較複雜之WDM/DWDM-Based網狀網路使用1+1路徑保護方案(1+1 Path Protection Scheme)進行研究與探討;我們將提出兩種分配路徑方式與演算方法來分配尋找所需之主要路徑(Primary Path)與相對應的備用路徑(Backup Path) 。在模擬分析部分,我們將考慮備用路徑具互斥性(Link-Disjoint)與鏈結共享(Link-Shared)兩種方案進行討論。前者分配尋找備用路徑方式有較高的可靠度(Reliability),而後者之方式其路徑分配成功機率較高與有較好的網路使用效率。與當主要路徑發生故障時,計算切換到備用路徑的保護交換時間(Protection Switching Time)。最後我們將會依照網路的狀況去預測所能分配建立之路徑數目。


As various applications have been deployed in the internet flourishing, the network traffic has also grown quickly especially for the multi medium services, more network bandwidth and better quality are required rapidly. Therefore, the development of the network transport technologies are not only to increase the IP packets’ forwarding performance by using the hardware switching such as Asynchronous Transfer Mode (ATM) technology, recent researches are also devoted to forward the IP packets over the Dense Wavelength Division Multiplexing (DWDM) directly. These technologies have gradually moved the functions of IP layer, such as routing and route protection, down to lower layers (e.g. ATM, SDH/DWDM). However, the traditional methods used in the IP layer are no longer suitable for the use in the lower layers due to the lack of IP layer information in the lower layer and the layer violation. Then, the purpose of this project are to study the route allocation schemes under different IP over DWDM architectures and the route protection and restoration issues are also studied in according for the consideration of the network reliability.


目錄
摘要………………………………………………………..I
目錄……………………………………………………………II
圖目…………………………………………………………..IV
表目…………………………………………………………..VI
第一章 緒論………….……………………………………1
1.1前言…..……………………...………………………..1
1.2研究動機與目的…………………………………..2
1.3研究方法流程………….…….……………………3
1.4論文組織架構……..……….……………………5
第二章 WDM/DWDM通訊網路系統..…………………6
2.1前言…………..…..………………….………...6
2.2SONET/SDH網路簡介……………….....7
2.3WDM/DWDM通訊網路……………………….....9
2.2.1WDM/DWDM傳輸技術……………………………..9
2.2.2WDM/DWDM系統之相關設備….………………….13
2.2.2WDM/DWDM網路之應用…...….………………….19
2.4全光網路技術…………………………………….....25
2.4.1IP over WDM/DWDM的整合……………………….25
2.4.2IP over WDM/DWDM控制與管理技術…………….27
第三章 相關文獻回顧………………………………………30
3.1背景說明…………….…………………………..30
3.2保護機制與恢復機制之基本理論…………………………….31
3.3保護機制與恢復機制之方案………………………………….33
3.4現有的光纖保護與恢復技術……………………...37
3.4.1SONET/SDH光纖保護機制…………..……….37
3.4.2WDM波長通道保護切換環…………………………..40
3.4.3光纖通訊網路之恢復機制…………..………42
第四章 具保護機制之路徑分配演算方法………………45
4.11+1保護方案路徑分配方式…………………....……………..45
4.2計算路徑之步驟與演算方式…………………….……46
4.3效能分析……………..………………………………….53
4.3.1保護交換時間…………………….…………………...53
4.3.2可靠度分析…………………………………………….54
4.4可分配路徑數目之預測…..………………………………….55
第五章 模擬結果與討論……....…………………………56
5.1模擬架構與流程……………..…………………………………56
5.2模擬相關參數設定……………..………………………………58
5.3模擬結果分析與討論……………..……………………………60
5.3.1輸出結果…………………………..60
5.3.2分析與討論………………………..68
第六章 結論與後續研究方向建議……..…………………………72
參考文獻…………………………………………………..73


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