物理网络芯片与FPGA结合的向量网交换机的实现

发布时间：2018-03-13 17:13

本文选题：向量网　切入点：FPGA　出处：《北京交通大学》2017年硕士论文　论文类型：学位论文

【摘要】：为汲取现有网络中的优秀技术,改进当前网络的性能,构建出一种可无限扩展且高可靠性的网络架构,本课题组提出了一种新型的网络体系架构一向量网。向量网(VectorNetwork)实现了数据面与控制面的分离,在数据面中,转发设备只需转发接收的数据包,在控制面中,转发设备则需要负责路由信息的收集与数据链路维护等工作,与传统以太网交换机相比其大大降低了向量交换转发设备的成本与复杂性。向量网交换机便是工作在向量网数据面上的转发设备,它的主要功能就是解析数据包,再将数据包转发。而向量网控制面的工作则由其他设备来承担,通常为计算机,这样就将数据面与控制面分离,在向量网交换机中控制面的功能越少越好,从而简化 VS(Vector Switch)。向量网交换机的设计工作包括两部分内容,一是硬件电路设计;二是FPGA硬件编程设计。本论文的研究目标是完成第一项工作,即向量网交换机的硬件设计与制作。其中包括以下具体工作:(1)设计一套物理网络芯片与FPGA相结合的向量网交换机的实现方案。根据向量网交换机的设计目标,结合以往向量网交换机的硬件系统方案,完成方案的设计。该方案中主要设计包括:MAC模块与PHY模块主要芯片选型与周边电路的设计、电源模块与RJ45模块的选择与电路设计以及向量网交换机中各个模块间接口类型的选择与设计等。完成了向量网交换机的电路原理图的设计;(2)完成向量网硬件交换机的制作。根据实现链路层功能的FPGA芯片XC3S1400A与PHY模块中BCM5464SR芯片以及其他芯片的电气要求,通过具体的分层、布局、布线工作,完成PCB的绘制与电路板的制作;(3)完成向量网交换机硬件系统的调试与测试。通过边焊边调的方法,逐步测试硬件系统各模块功能,保证电路板上的各模块可以正常地实现其电气功能。设计向量网交换机硬件系统测试方案,通过三种回环测试的方法验证硬件系统的工作状态与功能,验证了向量网交换机设计方案的有效性,完成了向量网交换机的实现工作。
[Abstract]:In order to improve the performance of the current network and draw on the excellent technology in the existing network, a network architecture with unlimited expansibility and high reliability is constructed. A new network architecture, vector network (Vector Network), is proposed to separate the data surface from the control surface. In the data surface, the forwarding device only needs to forward the received data packet, and in the control plane, the Vector Network can separate the data surface from the control surface. The forwarding device is responsible for the collection of routing information and the maintenance of data links. Compared with the traditional Ethernet switch, it greatly reduces the cost and complexity of the vector switching and forwarding device. The vector network switch is the forwarding device working on the data plane of the vector network, and its main function is to resolve the data packets. The work of the control surface of the vector network is performed by other devices, usually the computer, so that the data surface is separated from the control surface, and the less the function of the control surface in the vector network switch, the better. So as to simplify the design of VS(Vector switch, the design of vector network switch includes two parts, one is the hardware circuit design, the other is the FPGA hardware programming design. That is, the hardware design and fabrication of vector network switch, which includes the following specific work: 1) Design a set of realization scheme of vector network switch which combines physical network chip with FPGA. According to the design goal of vector network switch, Combining with the previous hardware system scheme of vector network switch, the design of the scheme is completed. The main design of this scheme includes the selection of the main chips of the PHY module and the PHY module, and the design of the peripheral circuit. The selection and circuit design of power supply module and RJ45 module, as well as the choice and design of interface type among different modules in vector network switch, etc. The design of circuit schematic diagram of vector network switch is completed. According to the electrical requirements of FPGA chip XC3S1400A and PHY module BCM5464SR chip and other chips which realize link layer function, Through the specific layering, layout and wiring work, PCB drawing and circuit board fabrication are completed. The debugging and testing of the VN switch hardware system is completed. By the method of welding and adjusting, the function of each module of the hardware system is tested step by step. To ensure that each module on the circuit board can realize its electrical function normally. The hardware system test scheme of vector network switch is designed, and the working status and function of the hardware system are verified by three kinds of loop test methods. The validity of the design scheme of vector network switch is verified, and the implementation of vector network switch is completed.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN915.05

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