摘要： 针对现有多协议标签交换(MPLS)网络故障检测机制计算复杂和难于部署的问题，提出一种简单快速的故障检测机制——MPLS网络故障环回检测机制。在MPLS协议转发模块中增加操作与维护环回处理模块以加快故障检测速度，实现固定周期和动态周期2种检测方式。在Linux平台上开发其工作原型——LSPFD，实验证明该机制能正确测量网络延迟，且采用动态周期检测方式可使网络开销更低。

关键词: 多协议标签交换, 标签交换路径, 故障检测

Abstract: This paper proposes a simple and fast failure detection mechanism——the loopback detection mechanism for Multi-Protocol Label Switching(MPLS) network failure. The “OAM loopback module” is added into the MPLS protocol module, and the implementation and deployment are very simple. The detection packets are transferred below the MPLS level, and the detection operations are executed fast. The detection methods with fixed period and dynamic period are both provided. The mechanism is implemented on the Linux platform and a prototype named LSP Fast Detecting(LSPFD) is developed. Experiments show that the mechanism works effectively.

Key words: Multi-Protocol Label Switching(MPLS), Label Switched Path(LSP), failure detection

中图分类号: 

• TP393.07