【摘要】：隨著計(jì)算機(jī)網(wǎng)絡(luò)的高速發(fā)展、信息化進(jìn)程的不斷深入,人們?cè)絹?lái)越關(guān)注網(wǎng)絡(luò)設(shè)備的可靠性和安全性。同時(shí),網(wǎng)絡(luò)設(shè)備的高可用性也受到普遍的重視。轉(zhuǎn)發(fā)與控制分離的開(kāi)放可編程的網(wǎng)絡(luò)體系結(jié)構(gòu)由IETF(國(guó)際互聯(lián)網(wǎng)工程任務(wù)組)中的ForCES (Forwarding and Control Element Separation)工作組提出,它是網(wǎng)絡(luò)設(shè)備的重要發(fā)展方向之一。ForCES控制件高可用性研究備受信息技術(shù)研究者的關(guān)注。 本文通過(guò)分析基于冷備份的ForCES高可用性以及ForCES體系結(jié)構(gòu),研究基于熱備份的ForCES高可用性中控制件失效檢測(cè)與恢復(fù)方法。本文詳細(xì)研究了可用控制件列表的產(chǎn)生、更新與同步,以及如何實(shí)現(xiàn)多個(gè)可用控制件之間數(shù)據(jù)的一致性的方法。為了及時(shí)有效的檢測(cè)主控制件是否失效,本文提出了點(diǎn)檢測(cè)與心跳檢測(cè)相結(jié)合的方法。當(dāng)主控制件被檢測(cè)出處于非正常工作狀態(tài)時(shí),為了更好地實(shí)現(xiàn)主備之間的無(wú)縫切換,本文引用并改進(jìn)基于IP的任務(wù)接管機(jī)制。最后,本文給出了ForCES高可用性中控制件失效檢測(cè)與恢復(fù)的具體實(shí)現(xiàn)過(guò)程,并對(duì)其進(jìn)行功能與性能上的測(cè)試分析,充分證明其可用性與正確性。 本文的工作為ForCES高可用性的改善奠定了基礎(chǔ),滿(mǎn)足了多控制件冗余備份的需求,且通過(guò)點(diǎn)檢測(cè)和心跳檢測(cè)相結(jié)合的方法,有效防止轉(zhuǎn)發(fā)件切換到不同的控制件。
[Abstract]:With the rapid development of computer network and the deepening of information process, people pay more and more attention to the reliability and security of network equipment. At the same time, the high availability of network equipment has also been widely valued. The open programmable network architecture for the separation of forwarding and control was proposed by the ForCES (Forwarding and Control Element Separation) working group in IETF (Internet Engineering Task Force). It is one of the important development directions of network equipment. The research on high availability of forces control parts has attracted the attention of information technology researchers. Based on the analysis of ForCES high availability and ForCES architecture based on cold backup, this paper studies the failure detection and recovery method of control parts in ForCES high availability based on hot backup. In this paper, the generation, update and synchronization of available control parts list, and how to realize the data consistency among multiple available controllers are studied in detail. In order to detect the failure of the main control parts in time and effectively, a method of combining point detection with heartbeat detection is proposed in this paper. When the main controller is detected to be in an abnormal working state, in order to better realize the seamless switching between the master and standby, this paper refers to and improves the task taking-over mechanism based on IP. Finally, the realization process of failure detection and recovery of control parts in ForCES high availability is given, and its function and performance are tested and analyzed, which fully proves its availability and correctness. The work of this paper lays a foundation for the improvement of ForCES high availability, meets the needs of redundant backup of multi-control parts, and effectively prevents the forwarding parts from switching to different controls by combining point detection and heartbeat detection.
【學(xué)位授予單位】：浙江工商大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TP393.05

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