博碩士論文 92533022 詳細資訊




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姓名 溫智隆(Chih-Lung Wen)  查詢紙本館藏   畢業系所 通訊工程學系在職專班
論文名稱 在6PE網路中應用等級差別式服務品質之研究
(Study of Supporting Differentiated Service on 6PE Networks)
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摘要(中) IPv6改善了許多IPv4所欠缺的優點,尤其128 位元的定址能力,使得IP位址不再缺欠。但IPv6在發展階段必須與IPv4共存,網路服務提供者(ISP)須提供IPv4 及 IPv6兩種網路服務,幾種互通機制於是產生,其中有一種架構在IPv4 MPLS 網路之上能讓IPv6 網路透通的方式,ISP 只需在MPLS 邊際路由器啟動Dual Stack及MP-BGP等設定,不需增加任何新設備,是種低成本且方便的作法,稱為6PE (Connecting IPv6 Islands over IPv4 MPLS using IPv6 Provider Edge Routers )網路。
目前的6PE 在規範中並不支援服務品質(QoS),本論文的主要研究重點在探討如何使6PE網路具備QoS,並考量IPv6 流量封包的不同服務等級特性,將網路資源做有效分配。論文中採用DSCP (DiffServ Code Point) 貫通6PE網路中的IPv6 及MPLS 網路,並使用標準對應(Mapping)延續封包的服務等級,以及引用IPv6 標頭的Flow Label 加快訊流的繞送速度,以期達到不同服務等級的需求。
經由模擬軟體操作改變網路環境參數(Data rate、DSCP及Flow Label)及設定不同的網路狀況(例如網路雍塞),觀察各個狀況之下的流量(Throughput )及端對端點回應時間(Round Trip Time, RTT),當封包具備較高的DSCP或Flow Label 時,其Throughput 獲得保障且RTT 相對較小也較穩定。模擬結果證實了6PE網路具備QoS的可行性及其效益。
摘要(英) IPv6 improves a lot from IPv4, especially in addressing of 128-bits, increases the IP address space tremendously. In the developlement of IPv6 , it needs to co-work with IPv4. The ISP has to provide both service of IPv4 & IPv6. One of them basing on IPv4 MPLS network makes IPv6 work, ISP only adjusts the setting of routers and activate Dual Stack & MP-BGP with no additional equipment required and saving cost. Thus, it’s called 6PE (Connecting IPv6 Islands over IPv4 MPLS using IPv6 Provider Edge Routers ).
The 6PE doesn’t support QoS in the current regulations, and this research emphasizes on how to make 6PE working with QoS, within consideration of different package service of IPv6. Thus network resouces will be re-allocated efficiently. In the research , we use DSCP (DiffServ Code Point) to bridge IPv6 & MPLS networks of 6PE, and also apply standard mapping extended package, thus quote IPv6’s Flow Label to increase the stream passing, and it will fit different service needs.
From the operation with simulated software changing network environment References (Data rate、DSCP、Flow Label) and seting some network situations (ex: network Congestion), we can observe the throughput under controlling situations and Round Trip Time (RTT). When the package carrying more DSCP or Flow Label, the results of throughput are assured and RTT becomes shorter and more stable. Simulation results prove that possibility and efficiency of QoS on 6PE Networks.
關鍵字(中) ★ 差別性服務
★ 服務品質
★ 多重協定標籤交換通訊協定
★ 標籤
關鍵字(英) ★ Flow Label
★ QoS
★ DiffServ
★ IPv6
★ 6PE
★ MPLS
論文目次 第一章 序 論 1
1.1 前言 1
1.2 研究目的 2
1.3 論文組織架構 3
第二章 背景及相關研究簡介 5
2.1 IPv6 Support MPLS Network 5
2.1.1 IPv6 的發展及特性 5
2.1.2 IPv6 定址 9
2.1.3 IPv4/IPv6 移轉技術 14
2.1.4 MPLS 的演進及其架構 16
2.1.5 MPLS 網路相關元件及協定介紹 19
2.1.6 6PE 的網路架構及運作方式 22
2.2 QoS over IPv6 and MPLS 23
2.2.1 IPv6 QoS 23
2.2.2 DiffServ supported MPLS 27
2.2.3 MPLS Traffic Engineering 32
2.2.4 Differentiated Services-aware MPLS Traffic Engineering 35
第三章 系統架構及模擬機制之描述 37
3.1 前言 37
3.2 DS-6PE模擬架構描述及運作方式 38
第四章 模擬分析及數據討論 43
4.1 前言 43
4.2 網路系統之模擬數據及分析 44
第五章 結語 52
參考文獻 54
參考文獻 [1] S. Deering and R. Hinden "Internet Protocol, Version 6 (IPv6) Specification", RFC
1883,December 1995
[2] A. Conta and S. Deering "Generic Packet Tunneling in IPv6 Specification", RFC
2473,December 1998
[3] S.Uda, N.Ogashiwa, Y.Uo and Y.Shinoda ”IPv6 support on MPLS networks:
experiences with 6PE approach”, Applications and the Internet Workshops, 2003.
Proceedings. 2003 Symposium on 27-31 Jan. 2003 Page(s):226 - 231
[4] J. D. Clercq, G. Gastaud, T. Nguyen, D. Ooms, S. Prevost, and F. L. Faucheur.
“Connecting IPv6 Islands across IPv4 Clouds with BGP”, IETF Internet Draft
(Work in Progress), January 2002. (draft-ietf-ngtrans-bgp-tunnel-04)
[5] Y. Rekhter and T. Li. “A Border Gateway Protocol 4 (BGP-4)”, RFC 1771,IETF,
March 1995.
[6] T. Bates, Y. Rekhter, R. Chandra, and D. Katz, “Multiprotocol Extensions for
BGP-4”, RFC 2858, IETF, June 2000.
[7] J. De Clercq, D. Ooms , S. Prevost and F. Le Faucheur“Connecting IPv6 Islands over IPv4 MPLS using IPv6 Provider Edge Routers (6PE)", draft-ooms-v6ops-bgp-tunnel-06.txt, January, 2006
[8] K. Nichols,S. Blake,F. Baker, D. Black " Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers", RFC 2474, December 1998
[9] F. Le Faucheur ,L. Wu ,B. Davie, S. Davari ,P. Vaananen ,R. Krishnan, P. Cheval and J. Heinanen ,"Multi-Protocol Label Switching (MPLS) Support of Differentiated Services", RFC 3270,May 2002
[10] Man.Hongyun, Xu.Linying, Li.Zijian and Zhang.Lianfang“End-to-end QoS
implement by DiffServ and MPLS ", Electrical and Computer Engineering, 2004. Canadian Conference on Volume 2, 2-5 May 2004 Page(s):641 - 644 Vol.2
[11] Hagen.Silvia ”IPv6 Essentials”, July 2002
[12] Zeng.Ximing , Lung.Chung-Horong , Huang.Changcheng and A.Srinivasan” A
bandwidth-efficient scheduler for MPLS DiffServ networks”, Modeling,
Analysis, and Simulation of Computer and Telecommunications Systems, 2004.
(MASCOTS 2004). Proceedings. The IEEE Computer Society's 12th Annual
International Symposium on Publication Date: 4-8 Oct. 2004 On page(s): 251- 258
[13] E.B.Fgee, J.D.Kenney , W.J.Phillips , W.Robertson and S.Sivakumar “Implementing an IPv6 QoS management scheme using flow label & class of service fields”, Electrical and Computer Engineering, 2004. Canadian Conference on Volume 2, 2-5 May 2004 Page(s):1049 - 1052 Vol.2
[14] V.Fineberg“Specification of the military precedence and preemption in the
DS-TE networks”, Military Communications Conference, 2004. MILCOM 2004. IEEE Volume 2, 31 Oct.-3 Nov. 2004 Page(s):1136 - 1143 Vol. 2 Digital Object Identifier 10.1109/MILCOM.2004.1495015
[15] E.B.Fgee, J.D.Kenney , W.J.Phillips ; W.Robertson and S.Sivakumar “Comparison of QoS performance between IPv6 QoS management model and IntServ and DiffServ QoS models” ,Communication Networks and Services Research Conference, 2005. Proceedings of the 3rd Annual 16-18 May 2005 Page(s):287 – 292 Digital Object Identifier 10.1109/CNSR.2005.28
[16] E.C.K.Poh and H.T.Ewe“IPv6 packet classification based on flow label, source
and destination addresses”, Information Technology and Applications, 2005.
ICITA 2005. Third International Conference on Volume 2, 4-7 July 2005
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Internet-exchange-based addressing models” ,Communications Magazine, IEEE
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[18] M.Alam, P.Bethoju andM.Song“Study of traffic engineering capabilities of
MPLS networks” ,Information Technology: Coding and Computing, 2005. ITCC 2005. International Conference on Volume 2, 4-6 April 2005 Page(s):14 - 15 Vol. 2 Digital Object Identifier 10.1109/ITCC.2005.264
指導教授 吳中實(Jung-Shyr Wu) 審核日期 2006-7-16
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