关键词: 未来Internet体系结构，单层用户交换平台体系结构(SUPA)，面向以太网的物理帧时槽交换(EPFTS)，OAM，保护交换

Abstract: Single-layer User-data switching Platform Architecture(SUPA) which is based on Ethernet oriented Physical Frame Timeslot Switching(EPFTS) is promoted as a Future Internet architecture. SUPA User-platform OAM mechanism was introduced to provide operations including connectivity diagnosis, trace diagnosis and fault recovery in SUPA networks ( SUPANET)domain. Based on SUPA Virtual Line Switching(VLS) services,the authors focused on research on SUPA OAM-based protection switching mechanisms. Finally, based on QVL(QoS Virtual Line) and SVL(Shared Virtual Line) services, OAM-based protection switching mechanisms for the User platform in SUPA networks were proved validity in simulation experiments,and the comparison of the simulation results shows that QVL-based protection switching is better than SVL-based protection switching in QoS provisioning capability.

Key words: Future Internet architecture, Single-layer user-data switching platform architecture( SUPA) , Ethernet-oriented physical frame timeslot switching(EPFTS),OAM(Operation and management or operation, Administration and maintenance),Protection switching