自适应的LSP故障环回检测机制  

An Adaptive Loopback Mechanism for LSP Failure Detection

作　　者：肖宇峰[1] 陈山枝[2] 李昕[1] 李玉宏[1] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室,北京100876 [2]电信科学技术研究院无线移动通信国家重点实验室,北京100083

出　　处：《北京邮电大学学报》2009年第2期5-9,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(60672086);国家"863计划"项目(2007AA01Z2A1)

摘　　要：提出了一种可自适应检测标签交换路径(LSP)故障的机制.该机制基于自适应LSP检测模型,由环回方式测量网络延迟和检测超时.根据延迟和超时情况,能自适应地调节检测周期,控制检测包发送,在快速检测故障的同时减少检测包数目.实验证明,该机制工作可在规定的延迟范围内检测出故障,而且网络开销比固定周期检测机制低.An adaptive detection mechanism is presented to detect the label switched path （LSP） failure. Based on the adaptive LSP detection model, the network delay and the detection timeout are measured with loopback detection. According to the delay and timeout, this mechanism adaptively adjusts the detection period and schedules the transmission of detection packets. The failure is quickly detected with a few detection packets. Experiments show the mechanism can find failure in required time, and the detection costs are lower than the fixed period detection costs.

关 键 词：多协议标签交换 标签交换路径 故障检测 自适应 

分 类 号：TN929.53[电子电信—通信与信息系统]