分组传送网（PTN）断路保护机制研究

发布时间：2018-09-07 14:50

【摘要】：中国移动已大规模现网部署应用PTN设备，目前已开始统一承载2G/3G业务，并且在部分地区还承载了大客户业务和LTE试验网业务，因为PTN带宽较大（通常汇聚层为10GE以上），所以对其网络的可靠性提出了很高的要求。对PTN断路保护机制的研究是PTN技术研究里不可或缺的一项工作。目前上海移动现网PTN网络主要采用线性标签交换通道LSP（Label Switched Path）线性保护。但是由于网络现在越来越大，当现网中存在多点故障等复杂情况时，同一PTN环网多处中断很可能导致主备用LSP保护均中断，从而导致业务中断，存在一定的安全隐患。本文通过分析PTN的主要保护方式：线性保护以及环网保护方式，针对上海移动现有PTN网络特点，研究出一种新的PTN的断路保护机制。此机制就是将环网保护和线性保护联合起来一起应用，在原有上海移动PTN网络LSP保护的基础上，在其汇聚层加上环网保护，从而达到抗多点故障的目的。通过搭建这样一个新的断路机制模型，用仪表模拟用户，在实际的设备上经行断路实验，通过验证多点故障、网元故障等现网常见的问题，来查看模型的效果和可行性。结果得出环网保护和线性保护相结合的方式可以很好地达到PTN网络抗多点故障的目的，这样一种新的保护机制可以增加PTN网络的安全性以及可靠性。本论文将环网保护机制应用到大型的运营分组网络中，，在国内和国际上都是率先的尝试。因此这一成果对国际、国内企业标准的制定，以及专利和知识产权保护方面，都有积极的推动作用。
[Abstract]:China Mobile has deployed PTN equipment on a large scale and has begun to carry 2G/3G services uniformly, and has also carried major customer services and LTE test network services in some areas. Because the bandwidth of PTN is large (usually the convergent layer is more than 10GE), the reliability of PTN network is very high. The research on the mechanism of PTN open circuit protection is an indispensable work in the research of PTN technology. At present, PTN network of Shanghai Mobile mainly uses linear label switching channel LSP (Label Switched Path) linear protection. However, as the network is getting larger and larger now, when there are complex situations such as multi-point faults in the present network, the multiple interruptions in the same PTN ring network will probably lead to the interruption of the main and standby LSP protection, which will lead to the interruption of the service and the existence of certain security risks. This paper analyzes the main protection methods of PTN: linear protection and ring network protection. According to the characteristics of the existing PTN network of Shanghai Mobile, a new open circuit protection mechanism of PTN is developed. This mechanism is to combine the ring network protection and linear protection together. On the basis of the LSP protection of the original Shanghai Mobile PTN network, the ring network protection is added in its convergent layer, so as to achieve the purpose of resisting the multi-point fault. By setting up such a new open circuit mechanism model, simulating the user with the instrument, running the experiment on the actual equipment, checking the common problems of the network, such as multi-point fault, network element fault and so on, to see the effect and feasibility of the model. The results show that the combination of ring network protection and linear protection can achieve the purpose of resisting multipoint fault in PTN network. This new protection mechanism can increase the security and reliability of PTN network. In this paper, the ring network protection mechanism is applied to the large operation packet network, and it is the first attempt both at home and abroad. Therefore, this achievement has a positive impact on the establishment of international and domestic enterprise standards, as well as patent and intellectual property protection.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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