数据中心网络拓扑发现关键技术研究

发布时间：2018-04-20 05:39

本文选题：数据中心 + 拓扑发现　；参考：《国防科学技术大学》2013年硕士论文

【摘要】：数据中心已经成为承载大规模数据计算和存储的重要基础设施，而快速、高效的数据中心网拓扑发现对于数据中心的正常管理和运行有着至关重要的意义。当前数据中心网络主要由大量二层交换机和三层交换机组成，而由于二层交换机的透明性，一般的网络拓扑发现算法难以发现。论文结合数据中心网络不同层次交换机并存的特点，从网络层和数据链路层两个层次对网络拓扑发现技术进行了研究，论文的主要工作和创新点如下：（1）论文介绍了数据中心网络结构，阐述了网络管理与拓扑发现的意义，对拓扑发现需要用到的SNMP协议，生成树协议进行了研究，分析了交换机的工作有原理。（2）设计了网络层拓扑发现算法。针对网络层拓扑发现设计了一种基于SNMP协议的拓扑发现算法，主要是基于SNMP协议获得MIB库中的拓扑信息，再通过对获取信息的分析处理，知道整个网络的拓扑结构。（3）设计了一种基于生成树协议的链路层拓扑发现算法。由于交换机硬件内在的透明性，交换设备只会在执行STP协议时与其相邻的设备进行信息交换，普通用户在使用网络的过程中一般察觉不到交换机的存在。论文通过获取生成树协议的相关信息并结合Bridge MIB变量来判断交换机的连接关系，，进而得到链路层的拓扑结构。（4）通过对Shortest Path Bridging（SPB）技术进行的分析和研究，论证了SPB技术在数据中心网络中应用的可行性。（5）基于上面的两种算法设计了一个原型系统，对原型系统结构进行了说明，对如何实现模块功能进行了详细分析，并构建网络环境对原型系统进行了验证，对测试结果进行了分析，验证了算法的可行性。综上所述，本文基于SNMP协议和生成树协议设计了数据中心网络网络层和链路层的拓扑发现算法，并在算法基础上设计实现了一个原型系统，经过实验测试验证了算法的正确性。
[Abstract]:Data center has become an important infrastructure for carrying large data computing and storage, and rapid and efficient data center network topology discovery is of vital importance to the normal management and operation of data centers. The current data center network is composed mainly of a large number of two layer switching machines and three layer switches, and because of the two layer switching. The general network topology discovery algorithm is difficult to find. This paper studies the network topology discovery technology from two levels of network layer and data link layer. The main work and innovation of this paper are as follows:
(1) the paper introduces the network structure of data center, expounds the significance of network management and topology discovery, studies the SNMP protocol which needs to be used in the topology discovery, and studies the spanning tree protocol, and analyzes the principle of the work of the switch.
(2) the network layer topology discovery algorithm is designed. A topology discovery algorithm based on SNMP protocol is designed for the network layer topology discovery, which is mainly based on the SNMP protocol to obtain the topology information in the MIB library, and then through the analysis and processing of the acquired information, the topology of the whole network is known.
(3) a link layer topology discovery algorithm based on the spanning tree protocol is designed. Because of the internal transparency of the switch hardware, the exchange device will only exchange information with its adjacent equipment when the STP protocol is executed. The common user can not detect the existence of the switch in the process of using the network. The Bridge MIB variable is used to judge the connection relationship of the switch and get the topology of the link layer.
(4) through the analysis and research of Shortest Path Bridging (SPB) technology, the feasibility of SPB technology in data center network is demonstrated.
(5) a prototype system is designed based on the above two algorithms, the structure of the prototype system is explained, the function of how to realize the module is analyzed in detail, and the network environment is constructed to verify the prototype system, and the test results are analyzed, and the feasibility of the calculation method is verified.
To sum up, based on the SNMP protocol and the spanning tree protocol, the topology discovery algorithm of the network layer and link layer of the data center is designed, and a prototype system is designed and implemented on the basis of the algorithm, and the correctness of the algorithm is verified by the experimental test.

【学位授予单位】：国防科学技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP393.02;TP308

【参考文献】