改進DNS64域名解析機制在IVI過渡方案中的應(yīng)用
發(fā)布時間:2018-11-18 09:53
【摘要】:IVI過渡方案是IPv4/IPv6網(wǎng)絡(luò)過渡時期實現(xiàn)兩種不同協(xié)議網(wǎng)絡(luò)互聯(lián)互通的重要機制,而對IVI DNS64域名解析機制的設(shè)計和部署是IVI過渡方案中的重要研究課題.本文針對IVI過渡方案中現(xiàn)有的域名解析機制存在的IPv6主機訪問IPv4環(huán)境中雙棧服務(wù)器時DNS64代理對雙棧服務(wù)器的合成AAAA類型記錄和真實AAAA類型記錄的選擇而造成的無法訪問的問題和IPv6環(huán)境下的雙棧主機查詢IPv4服務(wù)器A類型記錄卻得到合成AAAA類型記錄應(yīng)答等缺陷,提出一種改進的域名解析機制,能夠有效解決現(xiàn)有解析機制存在的缺陷,從而完善IVI DNS64域名解析機制.仿真結(jié)果表明,改進后的機制可使得IPv6環(huán)境中的主機通過IVI DNS64代理來共享IPv4環(huán)境中的DNS服務(wù),同時避免了原方案中存在的問題.改進的IVI DNS64機制已應(yīng)用在CNGI-CERNET2網(wǎng)絡(luò)的實際部署中.
[Abstract]:The IVI transition scheme is an important mechanism to realize the interconnection between two different protocols in the transition period of IPv4/IPv6 network. The design and deployment of the IVI DNS64 domain name resolution mechanism is an important research topic in the IVI transition scheme. In view of the existing domain name resolution mechanism in the IVI transition scheme, when the IPv6 host accesses the dual-stack server in the IPv4 environment, the selection of the composite AAAA type record and the real AAAA type record of the dual-stack server by the DNS64 proxy is not due to the existence of the existing domain name resolution mechanism in the IVI transition scheme. In IPv6 environment, the problems of accessing IPv4 server type A records by double stacks host query and obtaining a synthetic AAAA type record response are also discussed in this paper. An improved domain name resolution mechanism is proposed, which can effectively solve the defects of the existing resolution mechanism and perfect the IVI DNS64 domain name resolution mechanism. Simulation results show that the improved mechanism can enable the hosts in the IPv6 environment to share the DNS services in the IPv4 environment through the IVI DNS64 proxy, while avoiding the problems in the original scheme. The improved IVI DNS64 mechanism has been applied to the actual deployment of CNGI-CERNET2 network.
【作者單位】: 清華大學(xué)深圳研究生院;清華大學(xué)計算機科學(xué)與技術(shù)系;中國地質(zhì)大學(xué)(北京)地球物理與信息技術(shù)學(xué)院;比威網(wǎng)絡(luò)技術(shù)有限公司;
【基金】:國家自然科學(xué)基金項目(60972011)資助 高等學(xué)校博士學(xué)科點專項科研基金項目(20100002110033)資助 國家“九七三”重點基礎(chǔ)研究發(fā)展計劃項目(2009CB320502)資助
【分類號】:TP393.08
[Abstract]:The IVI transition scheme is an important mechanism to realize the interconnection between two different protocols in the transition period of IPv4/IPv6 network. The design and deployment of the IVI DNS64 domain name resolution mechanism is an important research topic in the IVI transition scheme. In view of the existing domain name resolution mechanism in the IVI transition scheme, when the IPv6 host accesses the dual-stack server in the IPv4 environment, the selection of the composite AAAA type record and the real AAAA type record of the dual-stack server by the DNS64 proxy is not due to the existence of the existing domain name resolution mechanism in the IVI transition scheme. In IPv6 environment, the problems of accessing IPv4 server type A records by double stacks host query and obtaining a synthetic AAAA type record response are also discussed in this paper. An improved domain name resolution mechanism is proposed, which can effectively solve the defects of the existing resolution mechanism and perfect the IVI DNS64 domain name resolution mechanism. Simulation results show that the improved mechanism can enable the hosts in the IPv6 environment to share the DNS services in the IPv4 environment through the IVI DNS64 proxy, while avoiding the problems in the original scheme. The improved IVI DNS64 mechanism has been applied to the actual deployment of CNGI-CERNET2 network.
【作者單位】: 清華大學(xué)深圳研究生院;清華大學(xué)計算機科學(xué)與技術(shù)系;中國地質(zhì)大學(xué)(北京)地球物理與信息技術(shù)學(xué)院;比威網(wǎng)絡(luò)技術(shù)有限公司;
【基金】:國家自然科學(xué)基金項目(60972011)資助 高等學(xué)校博士學(xué)科點專項科研基金項目(20100002110033)資助 國家“九七三”重點基礎(chǔ)研究發(fā)展計劃項目(2009CB320502)資助
【分類號】:TP393.08
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