【作者】 王胡成； 肖宇峰； 李昕； 陈山枝；

【Author】 wang Hucheng Xiao Yufeng Li Xin Chen Shanzhi Computer Science and Technology Institute,Beijing University Of Posts and Telecommunications,100876

【机构】 北京邮电大学计算机学院；

【摘要】 本文在 Linux 的开源平台上,实现了 MPLS(Multi-Protocol Label Switched)网络数据平面的故障检测功能,设计了检测工具 LSP(Label Switched Path)Ping。部署该工具后,LSP 的入口路由器发出带有 OAM (Operation,Administration and Maintenance)标签的检测请求包,中间路由器或出口路由器根据检验结果向入口路由器返回 OAM 应答,入口路由器根据应答情况来判断 LSP 故障类型。这种故障检测技术不仅能用来发现网络故障,还可以用来协同网络故障的恢复。更多还原

【Abstract】 This paper introduces the implementation of detecting MPLS data plane failures,and the designation of detecting tool LSP Ping under Linux platform.As long as this tool was deployed,the ingress router of LSP can send detecting request packets in which the OAM label was pushed,then the LSR(Label Switched Router)or the egress router of LSP would reply these OAM request packets basing on the result of checking,at last the ingress router can verdict what kinds of failures in LSP by analyzing the reply packets.This method of detecting failures can not only find failures in the network,but also be helpful to recover the failures.更多还原