分组增强型光传送网（POTN）技术研究

摘要

Packet enhanced OTN (POTN) is based on the OTN multi service mapping multiplexing and large pipeline transport scheduling. The PTN Ethernet, MPLS-TP packet switching and processing functions are introduced to realize the high efficiency and flexi-bility of telecom level packet service, and it is com-patible with the traditional SDH business processing functions. POTN has a rigid pipeline based on ODUk, and has a flexible pipeline based on MPLS_TP. The development of SDN, 100G and ultra high speed 100G based ultra high speed POTN is the direction of the optical transport network.%分组增强型光传送网（POTN）是以光传送网（OTN）的多业务映射复用和大管道传送调度为基础，引入分组传送网（PTN）的以太网、MPLS-TP的分组交换和处理功能，来实现电信级分组业务的高效灵活承载，并兼容传统SDH业务处理功能。POTN既具有基于光数据单元（ODUk）的刚性管道，又具有基于 MPLS_TP 的弹性管道。建立向软件定义网络（SDN）演进的、以100 Gbit/s、超100 Gbit/s为基础的超高速POTN是光传送网的发展方向。