MPLS-TP(多协议标签交换-传送架构)是在MPLS的基础上拓展的传输架构,在OAM上要比以太网OAM更加符合电信级标准,主要包括了CV(Connectivity Verification,连通性检测)、AIS(Alarm Indication Signal,告警指示)、RDI(Remote Defect Indication,远端缺陷指示)、LB(LoopBack,环回测试)、LCK(Lock,管理闭锁)、TST(Test,测试信号),LM(Loss Measure,丢包率测量)、DM(Delay Measure,包时延和抖动测量),APS(Automatic Protection Switching,自动保护倒换)、MCC(Management Communication Channel,管理通信通路)、SCC(Signal Communication Channel,信令通信通路)、SSM(Synchronication Status Message,同步状态消息)和CSF(Client Signal Fail,客户信号失效),较之以太网OAM来得更为丰富