IP over WDM网络的研究

对波分复用网络上运行因特网协议的有关研究作了综述。采用光路交换的波分复用网络，侧重于设计的三个方面：第一是虚拓扑设计，包括保护设计和重构算法；第二是业务量疏导算法，单个光波长能提供巨大的带宽，而业务的传输速率通常低得多，则需要将低速业务适当地并入波长，称为业务量疏导，以获得良好的网络性能并降低成本；第三是网络抗毁。最后，对进一步的研究作了讨论。
关 键 词 波分复用上运行因特网协议; 虚拓扑重构; 业务量疏导; 网络抗毁

Abstract In this paper, an overview of research on the IP over wavelength division multiplexing networks using optical path switching is presented. Three aspects of the design are emphasized. The first is the design of virtual topology, including protection design and reconfiguration algorithms. The second is on the algorithms for traffic grooming. An optical wavelength can provide huge bandwith, but the transmission rates of the services are usually much lower. Low rate services should be appropriately merged into the wavelengths in the network, which is called traffic grooming, to obtain good network performance and lower cost. The third is on the network survivability. Finally, problems for further research are discussed.
Key words IP over WDM; virtual topology reconfiguration; traffic grooming; network survivability