本文選題：IPv6過渡 + IDC�。� 參考：《北京郵電大學》2015年碩士論文

【摘要】：2011年全球IPv4地址分配殆盡,由IPv4向IPv6過渡已成為推動互聯(lián)網(wǎng)發(fā)展的關(guān)鍵步驟。近年來許多主流ISP (Internet Service Provider)已完成大規(guī)模IPv6網(wǎng)絡升級部署,然而互聯(lián)網(wǎng)內(nèi)容供應商ICP (Internet Content Provider)提供的絕大多數(shù)應用服務仍然僅支持IPv4。對于部署在互聯(lián)網(wǎng)數(shù)據(jù)中心IDC (Internet Data Center)中的海量IPv4應用服務器,如何在IPv6接入網(wǎng)絡環(huán)境下確保其在IPv4公網(wǎng)中的可達性,成為IPv6過渡面臨的一項關(guān)鍵技術(shù)問題。針對該問題,本文首先針對IDC網(wǎng)絡IPv6過渡需求以及主流IPv4-over-IPv6隧道技術(shù)方案進行綜述。通過對比分析幾種不同隧道過渡機制,本文選擇Public 4over6方案作為研究基礎(chǔ),提出了一種面向IDC網(wǎng)絡的4over6網(wǎng)關(guān)技術(shù)。該技術(shù)通過擴展IDC網(wǎng)絡網(wǎng)關(guān)與接入網(wǎng)核心路由器設備功能,使IDC網(wǎng)絡內(nèi)IPv4服務器能跨越ISP的IPv6網(wǎng)絡與IPv4互聯(lián)網(wǎng)實現(xiàn)互訪。針對ICP服務器無法正確配置IPv4網(wǎng)關(guān)地址的問題,本文對4over6網(wǎng)關(guān)的DHCPv4-over-IPv6協(xié)議交互行為進行擴展,使其能自動為內(nèi)側(cè)ICP服務器配置正確網(wǎng)關(guān)地址。此外,針對4over6核心路由器難以靜態(tài)配置ICP服務器IPv4/IPv6地址映射狀態(tài)的問題,本文以DHCP協(xié)議為基礎(chǔ)進行擴展,定義新DHCP選項來攜帶服務器IPv4地址,使4over6網(wǎng)關(guān)能主動為4over6核心路由器配置地址映射狀態(tài),從而解決4over6隧道動態(tài)配置問題�；谏鲜鲅芯砍晒�,本文進行了4over6網(wǎng)關(guān)原型系統(tǒng)設計與實現(xiàn)。利用Linux網(wǎng)絡內(nèi)核API與ISC (Internet System Consortium) DHCP開源項目,本文在Ubuntu平臺上分別完成4over6網(wǎng)關(guān)與4over6核心路由器代碼實現(xiàn),并通過功能與性能測試驗證了4over6網(wǎng)關(guān)技術(shù)方案的可行性。
[Abstract]:In 2011, the global IPv4 address has been allocated completely, and the transition from IPv4 to IPv6 has become a key step to promote the development of the Internet. In recent years, many mainstream ISPs (Internet Service providers) have completed large-scale IPv6 network upgrading and deployment, but most of the application services provided by Internet content provider ICP / Internet content provider still support IPv4 only. For the massive IPv4 application server deployed in Internet data Center IDC (Internet data Center), how to ensure the reachability in IPv4 public network under IPv6 access network environment has become a key technical problem in the transition of IPv6. In order to solve this problem, this paper firstly summarizes the transition demand of IPv6 in IDC network and the main IPv4-over-IPv6 tunneling technology. By comparing and analyzing several different tunnel transition mechanisms, this paper chooses Public 4over6 scheme as the research foundation, and proposes a 4over6 gateway technology for IDC-oriented network. By extending the functions of IDC network gateway and access network core router equipment, this technology enables IPv4 servers in IDC network to cross the IPv6 network of ISP and IPv4 Internet to realize the exchange of visits. Aiming at the problem that 4over6 server can not configure the address of IPv4 gateway correctly, this paper extends the interaction behavior of DHCPv4-over-IPv6 protocol of 4over6 gateway, so that it can automatically configure the correct gateway address for the inner ICP server. In addition, aiming at the problem that it is difficult for 4over6 core routers to statically configure the IPv4 / IPv6 address mapping status of 4over6 server, this paper extends it on the basis of DHCP protocol, and defines a new DHCP option to carry the IPv4 address of the server. The 4over6 gateway can actively configure the address mapping state for the 4over6 core router, thus solving the problem of dynamic configuration of the 4over6 tunnel. Based on the above research results, this paper designs and implements the prototype system of 4over6 gateway. Using Linux network kernel API and ISC-Internet system consortiums) DHCP open source project, this paper implements 4over6 gateway and 4over6 core router code separately on Ubuntu platform, and verifies the feasibility of 4over6 gateway technology scheme through function and performance test.
【學位授予單位】：北京郵電大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TP393.05

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