【摘要】 文章介绍了清华大学自主研发的基于通用多协议标签交换(GMPLS)协议的自动交换光网络(ASON)试验平台。试验平台由3个层面构成,分别为传送层面、控制层面和管理层面。传送层面由4个光交叉连接(OXC)和1个光上下路复用器(OADM)构成的传送网络组成;控制平面由多个协议模块构成,包括链路管理、路由和信令模块,这些协议的实现都是基于互联网工程任务小组(IETF)的GMPLS协议开发和实现的;管理平面完成配置管理和故障管理,包括网元管理以及软永久连接的触发等。试验平台支持动态可配置的网络拓扑、自动邻居发现、受限路由以及光层快速的保护和恢复功能。更多还原

【Abstract】 In this paper, the GMPLS (Generalized Multi Protocol Label Switching) based ASON (Automatically Switched Optical Network) test-bed is introduced. This test-bed composes of three different planes, namely the transport plane, the control plane and the management plane. There are four OXCs (Optical Cross Connection) and one OADM (Optical Adding/Dropping Mulitplexer) in the transport plane. The modules developed in the control plane include the link management module, the routing module and the signaling module, whose implementation are fully in compliance with international standards. In the management plane, configuration management and fault management are implemented. As an ASON test-bed, it supports several characteristic functions of next generation optical network, for instance, the run-time reconfigurable topology, automatic discovery of neighbors and services, constraint based routing and fast protection and restoration in the optical domain.更多还原