基于SDN的域间多路径路由协议的研究与实现

发布时间：2018-06-25 13:10

本文选题：大规模数据跨域传输 + 软件定义网络　；参考：《东南大学》2017年硕士论文

【摘要】：随着互联网技术的发展,互联网中数据传输的规模迅速增长。现有的大规模数据跨域传输大多是基于边界网关协议(BorderGatewayProtocol,BGP)的,BGP作为域间单路径路由协议存在数据传输可靠性差,传输效率低等问题。而现有的域间多路径协议的路径多样性差,路径收敛时间长,且缺乏灵活的控制手段。软件定义网络(SoftwareDefinedNetwork,SDN)技术的产生,为解决上述问题提供了新的技术支持。但是现有的基于SDN的大规模数据跨域传输的解决方案大多是建立在BGP的基础之上,仍不能有效的解决BGP固有的问题,如路径多样性差,收敛速度慢等。因此,本硕士论文针对目前大规模数据跨域传输存在的问题,提出了基于SDN的域间多路径协议,主要工作包括以下几个方面:(1)基于SDN的域间多路径路由协议模型。为提升大规模数据跨域传输控制的灵活性,解放复杂协议策略对于底层传输设备的性能要求,将SDN思想引入到域间路由协议中,并从系统的可扩展性,域间路由路径多样性角度出发,设计了基于SDN的域间多路径路由协议模型,确立路由协议模型中的协议实体、协议交互流程,为进一步设计路由协议消息和路由选路算法提供基础;(2)基于SDN的域间多路径路由协议消息。在完成路由协议模型设计的基础上,从丰富路径多样性的角度出发,研究具体的协议交互流程,设计协议消息间的时序关系、路由协议消息格式,以及路由协议消息处理流程,完成路由协议消息的具体设计,实现全局网络拓扑的获取,为域间路由路径的计算提供基础:(3)基于SDN的域间多路径路由选路算法。在1、2完成的基础上,设计基于SDN的域间多路径路由选路算法,构建全局网络拓扑,计算多条域间路由路径。通过域间多路径同时传输的方式,提高网络资源利用率,提升大规模数据跨域传输的传输效率。综上所述,本论文对大规模数据跨域传输进行了深入研究,提出了基于SDN的域间多路径路由协议,分别从路由协议模型,路[由协议消息,以及路由选路算法三个方面详细介绍了 SIMRP路由协议,并通过一系列的仿真实验及实验平台实验,验证了本论文取得成果的可行性和有效性。
[Abstract]:With the development of Internet technology, the scale of data transmission in the Internet is growing rapidly. Most of the existing large-scale data transmissions are based on the Border Gateway Protocol (BGP) as the inter-domain single path routing protocol, there are some problems such as poor reliability of data transmission and low transmission efficiency. However, the existing multipath protocols have poor path diversity, long path convergence time and lack of flexible control methods. The emergence of Software defined Network (SDN) technology provides new technical support to solve the above problems. However, most of the existing solutions for large-scale data transmissions based on SDN are based on BGP, and still can not effectively solve the inherent problems of BGP, such as poor path diversity, slow convergence rate and so on. Therefore, in view of the existing problems of large-scale data transmissions across domains, this dissertation proposes an inter-domain multipath protocol based on SDN. The main work includes the following aspects: (1) the model of inter-domain multipath routing protocol based on SDN. In order to enhance the flexibility of large-scale data cross-domain transmission control, and to liberate the performance requirements of the complex protocol for the underlying transport equipment, SDN is introduced into the inter-domain routing protocol, and the scalability of the system is analyzed. From the point of view of inter-domain routing path diversity, an inter-domain multi-path routing protocol model based on SDN is designed to establish the protocol entity and protocol interaction flow in the routing protocol model. It provides the basis for further designing routing protocol messages and routing algorithms. (2) Multi-path routing protocol messages between domains based on SDN. Based on the completion of routing protocol model design, from the point of view of rich path diversity, this paper studies the specific protocol interaction flow, the design of the timing relationship between protocol messages, the routing protocol message format, and the routing protocol message processing process. The detailed design of routing protocol messages is completed to obtain the global network topology, which provides the basis for the calculation of inter-domain routing paths. (3) the algorithm of multi-path routing between domains based on SDN. On the basis of 1 / 2, a SDN-based multi-path routing algorithm is designed to construct the global network topology and calculate multiple inter-domain routing paths. By means of simultaneous multipath transmission between domains, the utilization rate of network resources is improved, and the transmission efficiency of large-scale data transmissions across domains is improved. To sum up, this paper makes an in-depth study on large-scale data transmissions across domains, and proposes a multi-path routing protocol between domains based on SDN, respectively from the routing protocol model, routing protocol message, The SIMRP routing protocol is introduced in detail from three aspects: routing algorithm and routing algorithm. The feasibility and effectiveness of this paper are verified by a series of simulation experiments and experimental platform experiments.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.04

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