分组传送网中MPLS-TP OAM机制的研究与实现

发布时间：2018-07-06 14:36

本文选题：PTN + MPLS-TP　；参考：《武汉理工大学》2014年硕士论文

【摘要】：近些年来，通信领域相关技术已进入一个飞速发展时期，传统传输网络越来越不能满足飞速发展的业务需求，这引发了传送技术和业务承载的不断革新。在“ALL IP环境”逐渐成熟的大背景下，为了满足高速增长的运营级以太网业务以及由此带来的宽带业务需求，各种光网络新技术层出不穷。分组传送技术越来越多的应用在城域网中，其中一个突出的代表就是PTN，且已经成为传输技术的主流。PTN技术的发展，可满足大带宽业务和大颗粒IP业务的传输，并有效的实现了PTN与现网SDH/MSTP的有机融合。PTN技术是“面向连接的分组传送”技术，其中“面向连接”强调可以满足电信运营级的要求，因此必须提供和传统传送网相称的OAM能力，其实，改进的分组传送技术和端到端的电信级OAM机制的联合体就是PTN。本论文根据PTN设备传送的业务需求，，通过对PTN实现技术比较及OAM网络模型的分析，以MPLS OAM和SDH OAM的设计过程为参考，在PTN系统中，设计并实现了MPLS-TP OAM机制，通过将OAM软件模块载入现有的设备软件中来满足电信级网络操作维护管理的功能。本文首先在详细分析系统OAM功能需求的基础上，设计了MPLS-TP OAM的总体结构，并提出了具体的实施方案，紧接着针对PTN系统的软硬件环境配置，进行了必需的模块化与高效性设计。然后，对具体OAM功能模块进行了设计与实现，设计了对于OAM报文的层次功能处理模型及节点转发机制，设计了OAM报文和普通业务报文在传送网中的传输通道。本论文选取基于MPC8308方案的CPU平台、BCM56448方案的交换芯片组成PTN设备硬件系统，并嵌入Vxworks操作系统，在Tornado软件开发平台上，来开发实现MPLS-TP OAM的功能。对PTN系统OAM功能采取加载独立、可裁剪的分模块方式设计实现，保证功能的独立性。最后，选取故障管理和性能检测相关OAM功能中的典型应用通过众和德信PTN设备验证并附带实验结果及其详细分析。实验的结果和相关协议的标准是相符合的。结果也证明本篇论文设计的OAM模块能够实现对PTN设备所组网络的管理和维护功能。本OAM模块机制已经用于实际的PTN设备中，并且测试和运行良好。
[Abstract]:In recent years, communication technology has entered a period of rapid development, the traditional transmission network is more and more unable to meet the rapid development of business requirements, which leads to continuous innovation of transmission technology and service carrying. Under the background of "all IP environment" gradually mature, in order to meet the high-speed growth of operational Ethernet services and the resulting demand for broadband services, a variety of new optical network technologies emerge one after another. Packet transmission technology is more and more used in metropolitan area network, one of the outstanding representatives is PTN.PTN technology has become the mainstream of transmission technology, which can meet the transmission of large bandwidth services and large particle IP services. And effectively realize the organic fusion of PTN and SDH / MSTP. PTN technology is "connection-oriented packet transfer" technology, in which "connection-oriented" emphasizes that it can meet the requirements of telecommunication operation level, so it is necessary to provide OAM capabilities commensurate with traditional transport networks. In fact, the combination of improved packet transfer technology and end-to-end telecommunications-level OAM mechanism is PTN. According to the service requirement of PTN device, this paper designs and implements MPLS-TP OAM mechanism in PTN system by comparing PTN implementation technology and analyzing OAM network model, taking the design process of MPLS OAM and SDH OAM as reference, in PTN system, we design and implement MPLS-TP OAM mechanism in PTN system. The OAM software module is loaded into the existing device software to satisfy the maintenance and management function of telecom network operation. Based on the detailed analysis of OAM function requirements, this paper designs the overall structure of MPLS-TP OAM, and puts forward a specific implementation scheme. Then, the necessary modularization and high efficiency design is carried out for the hardware and software environment configuration of PTN system. Then, the specific OAM function module is designed and implemented, and the hierarchical function processing model and node forwarding mechanism for OAM message are designed, and the transmission channel between OAM message and ordinary service message in transport network is designed. In this paper, the switching chip based on MPC8308 CPU platform, BCM56448, is selected to form the PTN device hardware system, and the Vxworks operating system is embedded in the tornado software development platform to realize the function of MPLS-TP OAM. The OAM function of PTN system is designed and implemented by loading independent and tailor-made modules to ensure the independence of the function. Finally, typical applications of OAM functions related to fault management and performance detection are selected to be verified by Zhonghuexin PTN equipment with experimental results and detailed analysis. The results of the experiment are consistent with the standards of the relevant protocols. The results also show that the OAM module designed in this paper can manage and maintain the PTN devices. This OAM module mechanism has been used in practical PTN devices and has been tested and run well.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.07

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