本文選題：軟件定義網(wǎng)絡(luò) + 網(wǎng)絡(luò)虛擬化　； 參考：《浙江工商大學(xué)》2014年碩士論文

【摘要】：軟件定義網(wǎng)絡(luò)(Software Defined Networking,縮寫為SDN)作為一種新型的網(wǎng)絡(luò)架構(gòu),可以實(shí)現(xiàn)網(wǎng)絡(luò)控制平面與數(shù)據(jù)轉(zhuǎn)發(fā)平面的相互分離,并實(shí)現(xiàn)對整個(gè)網(wǎng)絡(luò)的可編程化控制,利用集中式的多個(gè)網(wǎng)絡(luò)控制節(jié)點(diǎn)通過標(biāo)準(zhǔn)化接口對各種基礎(chǔ)網(wǎng)絡(luò)設(shè)備進(jìn)行管理和動(dòng)態(tài)配置,為整個(gè)網(wǎng)絡(luò)資源的管理、設(shè)計(jì)以及使用提供更多的靈活性,從而更容易推動(dòng)整個(gè)網(wǎng)絡(luò)的革新與發(fā)展。SDN的核心技術(shù)是網(wǎng)絡(luò)虛擬化與集中控制管理。網(wǎng)絡(luò)虛擬化的主要研究問題之一是虛擬網(wǎng)絡(luò)映射。虛擬網(wǎng)絡(luò)支持多個(gè)網(wǎng)絡(luò)實(shí)驗(yàn)和服務(wù)同時(shí)運(yùn)行在同一個(gè)共享的底層物理網(wǎng)絡(luò)之上,虛擬網(wǎng)絡(luò)映射問題涉及到的就是如何將有限的底層物理網(wǎng)絡(luò)資源分配給盡可能多的虛擬網(wǎng)絡(luò)。本文研究的主要內(nèi)容之一就是SDN中的虛擬網(wǎng)絡(luò)映射,首先建立了基于邏輯功能塊(Logical Functional Block,縮寫為LFB)的虛擬網(wǎng)絡(luò)映射模型,提出了節(jié)點(diǎn)CPU需求值升序和降序映射方案以及基于節(jié)點(diǎn)選擇共享的映射優(yōu)化方案,然后對提出的方案進(jìn)行了實(shí)驗(yàn)仿真。結(jié)果顯示,在功能塊成本方面,節(jié)點(diǎn)降序映射方案比節(jié)點(diǎn)升序映射方案節(jié)省了17.23%,基于節(jié)點(diǎn)升序的選擇共享映射方案比節(jié)點(diǎn)升序映射方案節(jié)省了25.62%,基于節(jié)點(diǎn)降序的選擇共享映射方案比節(jié)點(diǎn)升序映射方案節(jié)省了25.34%,優(yōu)化程度顯著。本文對虛擬網(wǎng)絡(luò)映射問題進(jìn)行了深入的研究和完善,為SDN的理論研究提供了新的借鑒。同時(shí)對于集中控制管理的研究,針對傳統(tǒng)網(wǎng)絡(luò)體系中的單個(gè)控制節(jié)點(diǎn)難以應(yīng)對網(wǎng)絡(luò)中日益增長的事件和請求的問題,本文對SDN中多控制節(jié)點(diǎn)管理的方案和算法進(jìn)行了深入的分析與研究,提出了多控制節(jié)點(diǎn)管理多轉(zhuǎn)發(fā)節(jié)點(diǎn)的有效方案。在深入分析影響租用效率及轉(zhuǎn)發(fā)節(jié)點(diǎn)和控制節(jié)點(diǎn)連接情況的參數(shù)基礎(chǔ)上,推導(dǎo)出了具體的數(shù)學(xué)模型,并總結(jié)出了相關(guān)因素影響控制節(jié)點(diǎn)對轉(zhuǎn)發(fā)節(jié)點(diǎn)管理性能的規(guī)律,為如何在SDN中實(shí)現(xiàn)多控制節(jié)點(diǎn)的高效管理提供一定的理論依據(jù)和借鑒。
[Abstract]:As a new network architecture, the software definition Defined network can separate the network control plane from the data forwarding plane, and realize the programmable control of the whole network. In order to provide more flexibility for the management, design and use of the whole network resources, the centralized network control nodes are used to manage and dynamically configure all kinds of basic network devices through the standardized interface. The core technology of SDN is network virtualization and centralized control management. One of the main research problems of network virtualization is virtual network mapping. Virtual network supports multiple network experiments and services running on the same shared underlying physical network at the same time. The problem of virtual network mapping is how to allocate the limited physical network resources to as many virtual networks as possible. One of the main contents of this paper is the virtual network mapping in SDN. Firstly, a virtual network mapping model based on logical Functional Block (LFB) is established. The ascending and descending order mapping scheme of node CPU requirement value and the mapping optimization scheme based on node selection and sharing are proposed, and then the experimental simulation of the proposed scheme is carried out. The results show that, in terms of function block cost, The node descending mapping scheme saves 17.23 points than the node ascending mapping scheme, the node ascending order based selection sharing mapping scheme saves 25.62 points than the node ascending mapping scheme, and the node descending order based selection sharing mapping scheme is better than the node ascending mapping scheme. The shooting scheme saved 25.34 and the degree of optimization was significant. In this paper, the virtual network mapping problem is deeply studied and perfected, which provides a new reference for the theoretical research of SDN. At the same time, for the study of centralized control management, it is difficult for a single control node in the traditional network system to deal with the growing number of events and requests in the network. In this paper, the scheme and algorithm of multi-control node management in SDN are deeply analyzed and studied, and an effective scheme of multi-control node management for multi-forwarding node is proposed. Based on the in-depth analysis of the parameters that affect the efficiency of lease and the connection between the forwarding node and the control node, the specific mathematical model is derived, and the rules of the related factors affecting the management performance of the control node to the forwarding node are summarized. It provides some theoretical basis and reference for how to realize the efficient management of multi-control nodes in SDN.
【學(xué)位授予單位】：浙江工商大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.01

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本文編號：1796112