光互联网的抗毁性设计研究

由于互联网层叠模型中多层都存在重复的保护与恢复机制，致使互联网的实现极其复杂，造成网络传输效率较低，而且拥塞。随着密集波分复用（DWDM）的广泛使用和网络底层性能的大幅度提高，已经不需要再对网络中多层进行重复保护与恢复。在此基础上，采用了未来光互联网3层 (应用层、IP层和光互联层) 协议模型，并对其中的光互联层的保护进行了深入的研究，提出了部分共享备用路径保护(P-SPP)方法。此模型能充分利用IP层电子的灵活恢复机制与光互联层的快速保护与恢复机制，提高光互联网的传输性能，以适应目前高速发展的互联网对传输带宽的要求。

Study of optical internet protection and restoration

Since there are laminated repeating protection and restoration in an internet laminar model,it makes the realization of the internetwork communication very complex,affects the network transport efficiency and makes the network block.With the wide use of DWDM and the improvement of network sublayer performance,the laminated repeating protection and restoration in internet will never be required.Therefore,the future optical internet three-laminar(application,IP and optical interconnection) protocol model was used and the protection for the optical interconnection lamina was investigated.Based on the investigation,a method of partially shared path protection(P-SPP) was put forward.This model can make full use of agile restoration mechanism of the IP lamina and protection & restoration mechanism of the optical interconnection lamina to improve network transport efficiency and meet the need of the development at top speed of internet work for the transmission bandwidth.