臺灣博碩士論文加值系統

本研究探討國內網際網路服務供應商(Internet Service Provider, ISP)所推出IPv6連線機制，由於對企業部署IPv6互連時，並不符合多點網路架構，且需要額外建置成本與複雜的互連設定管理。因此，本研究以實作方式模擬ISP應用MPLS提供企業IPv4 VPN網路架構，並導入ISP尚未以IETF所制定RFC 4798標準的IPv6互連機制。本研究結果驗證了在IPv4與IPv6過渡與共存時期，以MPLS作為企業IPv6互連機制，能達到如下五項優點： (1) 不改變ISP骨幹網路原架構，(2) ISP骨幹網路軟硬體升級變動量小，(3)企業端不需複雜的設定與維護，(4) 能與現行的MPLS IPv4 VPN緊密的結合，(5) 符合企業簡易的多點IPv6互連架構。另外，本研究經由測試模擬真實的網路環境，提出四項改善建議可提供未來ISP以MPLS作為企業IPv6互連時之參考。

This study is to explore IPv6 connection mechanism, offered by Internet Service Provider (ISP), vis-a-vis IPv6 interconnection deployment among domestic enterprises. Enterprise clients are in need of additional costs for establishment and complicated management of interconnection configuration, except for those incompatible with multiple-point networking infrastructure. Hence, this study intended to simulate ISP practically, based on IPv4 VPN networking infrastructure provided by MPLS, so as to induct the RFC 4798 standard (Connecting IPv6 Islands over IPv4 MPLS Using IPv6 Provider Edge Routers) by IETF. The results showed that both IPv4 and IPv6 are transitional and coexisting. The IPv6 interconnection mechanism of MPLS has five merits summarized as follows: (1) The existing ISP infrastructure stays intact. (2) The variation of upgrading for the hardware and software of the ISP infrastructure upgrade can minimize. (3) There is no need for enterprises to configure complicated setting and maintenance. (4) It is compatible well with the existing MPLS IPv4 VPN. (5) It is consistent with the IPv6 multiple-point infrastructure of enterprises. In addition, this study proposed for practical suggestions to ISP as a reference of MPLS for enterprise IPv6 interconnection.

中文摘要 ii
英文摘要 iii
誌 謝 辭 iv
內 容 目 錄 v
圖 目 錄 vii
表 目 錄 ix
第一章 緒論 1
第一節 研究背景及動機 1
第二節 研究目的 2
第三節 研究範圍與限制 3
第二章 文獻探討 4
第一節 MPLS標籤格式與主要結構 4
第二節 MPLS VPN組成架構與運作 8
第三節 國內ISP應用MPLS IPv4 VPN概況 13
第四節 企業現行IPv6互連機制 14
第五節 國內IPv6連線機制與問題分析 18
第三章 研究方法與實作架構設計 25
第一節 研究方法 25
第二節 模擬環境與架構設計 27
第三節 建構MPLS IPv4 VPN運作架構 32
第四章 以MPLS作為企業IPv6互連機制 39
第一節 實作導入IPv6 39
第二節 檢測6PE網路層可達資訊 40
第三節 檢測6PE 雙標籤運作機制 41
第四節 測試結果與建議 44
第五章 結論與未來發展 53
第一節 研究結論 53
第二節 未來發展 54
參考文獻 55
附錄A、Dyanmips參數 58
附錄B、路由器參數 62

一、中文部份
中華電信研究所(2007)，資通設備IPv6功能需求規範建議書。
二、英文部份
Aoun, C., & Davies, E. (July 2007). “Reasons to Move the Network Address Translator - Protocol Translator (NAT-PT) to Historic Status,” IETF RFC 4966.
Andersson, L., Minei, I., & Thomas, B. (October 2007). “LDP Specification,” IETF RFC 5036.
Bates, T., Chandra, R., Katz, D., & Rekhter, Y. (January 2007). “Multiprotocol Extensions for BGP-4,” IETF RFC 4760.
Carpenter, B., & Jung, C. (March 1999). “Transmission of IPv6 over IPv4 Domains without Explicit Tunnels, ” IETF RFC 2529.
Carpenter, B., & Moore, K. (February 2001). “Connection of IPv6 Domains via IPv4 Clouds,” IETF RFC 3056.
Durand, A., Fasano, P., Guardini, I., & Lento, D. (January 2001). “IPv6 Tunnel Broker, ” IETF RFC 3053.
Hagino, J., & Yamamoto, K. (June 2001). “An IPv6-to-IPv4 Transport Relay Translator,” IETF RFC 3142.
Lind, M., Ksinant, V., Park, S., Baudot, A., & Savola, P. (March 2005). “Scenarios and Analysis for Introducing IPv6 into ISP Networks,” IETF RFC 4029.
Marques, P., Bonica, R., Fang, L., Martini, L., Raszuk, R., Patel, K., & Guichard, J. (November 2006). “Constrained Route Distribution for Border Gateway Protocol/MultiProtocol Label Switching (BGP/MPLS) Internet Protocol (IP) Virtual Private Networks (VPNs),” IETF RFC 4684.
Nen-Fu, H., Han-Chieh, C., Reen-Cheng, W., Whai-En, C., & Tzu-Fang, S. (January 2003). “The IPv6 deployment and projects in Taiwan,” Applications and the Internet Workshops, pp 157-160.
Nordmark, E. (February 2000). “Stateless IP/ICMP Translation Algorithm,” IETF RFC 2765.
Nordmark, E., & Gilligan, R. (October 2005). “Basic Transition Mechanisms for IPv6 Hosts and Routers,” IETF RFC 4213.
Ooms, D., Carugi, M., Faucheu, Le. F., & Clercq, De. J. (September 2006). “BGP-MPLS IP Virtual Private Network (VPN) Extension for IPv6 VPN,” IETF RFC 4659.
Ooms, D., Faucheur, Le. F., Clercq, De. J., & Prevost, S. (February 2007). “Connecting IPv6 Islands over IPv4 MPLS Using IPv6 Provider Edge Routers (6PE),” IETF RFC 4798.
Rosen, E. (September 2005). “Removing a Restriction on the use of MPLS Explicit NULL,” IETF RFC4182.
Rosen, E., Viswanathan, A., & Callon, R. (January 2001). “Multiprotocol Label Switching Architecture,” IETF RFC 3031.
Rosen, E., Tappan, D., Fedorkow, G., Rekhter, Y., Farinacci, D., Li, T., & Conta, A. (January 2001). “MPLS Label Stack Encoding,” IETF RFC 3032.
Rosen, E., & Rekhter, Y. (February 2006). “BGP/MPLS IP Virtual Private Networks (VPNs),” IETF RFC 4364.
Rekhter, Y., & Rosen, E. (May 2001). “Carrying Label Information in BGP-4,” IETF RFC 3107.
Tsuchiya, K., Higuchi, H., & Atarashi, Y. (February 2000). “ Dual Stack Hosts using the "Bump-In-the-Stack" Technique,” IETF RFC 2767.
三、網站部份
IPv6 Portal of Taiwan (http://www.ipv6.org.tw/, 2007)
數位台灣計劃(http://www.etaiwan.nat.gov.tw/, 2007)
Geoff Huston (http://www.potaroo.net/tools/ipv4/, 2007)
Internet Assigned Numbers Authority (IANA)
(http://www.iana.org/assignments/port-numbers, 2008)
中華電信(http://www.cht.com.tw/BusinessCat.php?CatID=778, 2007)
數位聯合電信(http://mpls.seed.net.tw/mpls/mpls.html, 2007)
是方電訊(http://www.chief.com.tw/product/ip-vpn.htm, 2007)
神坊資訊(http://www.symphox.net/2005_symphox/p2_4.htm, 2007)
財團法人台灣資訊網路中心(http://trace.twnic.net.tw/routing/, 2007)
Hinet IPv6服務網(http://www.ipv6.hinet.net/, 2008)