基于MPLS流量工程的快速重路由机制研究与实现

发布时间：2018-03-08 16:30

本文选题：MPLS　切入点：流量工程　出处：《武汉邮电科学研究院》2014年硕士论文　论文类型：学位论文

【摘要】：多协议标签交换技术自产生以来获得了快速发展,它具有着快速转发、多业务支持等特点,在电信网络中扮演着十分重要的角色。随着MPLS技术在流量工程、服务质量等领域得到广泛应用,对MPLS网络的可靠性也提出了更高的要求。基于MPLS流量工程的快速重路由机制是一种局部保护机制,可以确保MPLS网络能够从链路或者节点的故障中快速恢复,对提高MPLS网络的可靠性有着显著的效果。本文研究了基于MPLS流量工程的快速重路由机制,并结合RFC4090标准实现了基于RSVP-TE的快速重路由机制。文章主要针对RFC4090中定义了Facility Backup和One-to-One Backup两种快速重路由方式做出研究,分析了两者的信令过程,并对两种方案进行了分析对比,最终结合Facility Backup方案实现了基于MPLS流量工程的快速重路由机制。同时本文针对节点保护做出改进,增加了PathErr消息触发FRR,可以同时对节点两侧的链路保护。方案预先建立Bypass隧道,并将主备隧道进行绑定,这大大加快了故障发生时的切换速度。文章主要分为5个部分,第一、文章分析了MPLS保护机制的国内外研究现状；第二、对MPLS及其流量工程的基本知识做出介绍,并分析了几种常用的MPLS保护机制：第三、文章研究了RSVP-TE及其快速重路由机制,分析了FRR的基本信令过程；第四、文章基于原有RSVP-TE实现了Facility Backup方式的快速重路由,并给出了相关流程；最后,文章针对该方案的实现进行了验证,实验结果表明该方案能够很好的对MPLS TE网络进行保护。
[Abstract]:Multi-protocol label switching (MPLS) technology has been developed rapidly since its birth. It has the characteristics of fast forwarding, multi-service support and so on. It plays a very important role in telecommunication network. With the development of MPLS technology in traffic engineering, Quality of Service (QoS) and other fields have been widely used, and the reliability of MPLS network is also required. The fast rerouting mechanism based on MPLS traffic engineering is a local protection mechanism. It can ensure that MPLS network can recover quickly from link or node fault, and has remarkable effect on improving the reliability of MPLS network. In this paper, a fast rerouting mechanism based on MPLS traffic engineering is studied. The fast rerouting mechanism based on RSVP-TE is implemented with RFC4090 standard. This paper mainly focuses on the definition of Facility Backup and One-to-One Backup in RFC4090, analyzes the signaling process of the two methods, and analyzes and compares the two schemes. Finally, the fast rerouting mechanism based on MPLS traffic engineering is implemented with Facility Backup scheme. At the same time, this paper improves the node protection and adds PathErr message to trigger PathErr, which can protect the link on both sides of the node at the same time. The scheme establishes Bypass tunnel in advance. The main and backup tunnels are bound, which greatly speeds up the switching speed when the fault occurs. The paper is divided into five parts: first, the paper analyzes the current research situation of MPLS protection mechanism at home and abroad; second, This paper introduces the basic knowledge of MPLS and its traffic engineering, and analyzes several commonly used MPLS protection mechanisms. Thirdly, this paper studies RSVP-TE and its fast rerouting mechanism, and analyzes the basic signaling process of FRR. This paper realizes the fast rerouting of Facility Backup mode based on the original RSVP-TE, and gives the related flow. Finally, the paper verifies the implementation of the scheme, and the experimental results show that the scheme can protect MPLS te network well.
【学位授予单位】：武汉邮电科学研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN915.05

【共引文献】