光代码标记在GMPLS网络中的应用

The Optical Code Label Switching in GMPLS network

通用多协议标记交换(GMPLS),是MPLS向光域的扩展,能提供动态的光通路,然而,在光域里的GMPLS面临的最关键的问题是,波长级的数据粒度导致很少的标记空间。在WDM技术的基础上,一个独立的波长通道的容量相对于边缘结点对之间的流量来说太大,如果将一个独立的波长通道独立的分配给一个节点对,对通道资源浪费太大,而以波长为标记,波长数量有限,其标记空间太少,不可能给每一个数据包或数据流分配标记。同时网络业务需求不断提高,传统开放系统互连参考模型的网络分层已不再适用,在光层实现像交换这样越来越智能的功能已成为必然趋势。为解决数据粒度与标记空间的问题,本文在光编码技术的基础上,将光代码用于GMPLS网络,并给出仿真实验研究,指出该技术的应*用为实现全光网奠定了理论和技术基础。最后。

GMPLS is the extension of MPLS to provide dynamic light path in optical fields, However, it＇s the key issue that the capacity of a single wavelength path may sometimes be too large to accommodate the traffic between edge node pairs, and the label space may be too small to assign the labels to each packet or flow, At the same time, to support continuous growth of Internet and multimedia traffic , traditional network model based layers becomes unavailable and more and more intelligent function such as switching in optical layer becomes the inevitable trend . To address the issues of data granularity and label space, this paper proposes a novel solution based on optical encoding technology, which is an introduction of optical code label into GMPLS all-optical network, With the help of the simulating experiment, the optical code label switching is realized. The technique of optical code label would be very important in realizing the all optical network communication. At final, the prospect and further solution based on GMPLS are proposed cautiously.