新一代智能城域光网络

本提出了一种标准化的光控制平面。阐明了开了用于光传输网的控制平面所遇到的选择与挑战。光控制平面被分解成邻居发现、服务发现、连接控制和拓扑、资源发现等几个基本的过程。不同的网络组织和分割导致了几个不同的自动配置模型：软性持久链路模型、用户接口模型和对等模型。这是构成以IP为中心的光传输网的控制和管理基础。同时也介绍了基于SDH光交换的新一代CIENA公司智能光网络，它具有大容量光交换能力和网络拓扑结构自动发现、端对端电路配置、带宽动态分配等功能及特点，将大大提高数据、电路业务的服务质量，新一代智能光网络是干线和城域网络交换传输最佳的选择。

The New Generation Intelligent Optical Network

This article presents a standardized optical network control plane, highlights the challenges and choicesthat need to be addressed in developing the control plane for optical transport networks.The optical control plane isdecomposed into the fundamental processes of neighbour discovery,service discovery,connection control,and topol-ogy/resource discovery. Different network organizations and partitioning result in several different automated provisioning models:softpermanent circuit,the user network interface and peer.This is the foundation of IP-Centric control and managementfor optical transport networks. This article also introduces the new generation of intelligent optical networks byCIENA.It is characterized by large capacity ofoptical switchs,automated topology discovery,port-to-port circuit pro-vision and dynamic distribution of bandwidth ,which will greatly improve the Qos of data and circuit.The new genera-tion of intelligent optical networks is the best choice of switching and transport for Backbone and Metro networks.