期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2017
卷号：5
期号：11
页码：16569
DOI：10.15680/IJIRCCE.2017.0511041
出版社：S&S Publications
摘要：MotivationIncreasing traffic on a node a fragmentation becomes main issue for such dynamic traffic. Other subtopic on handlingdynamic traffic will not clearly mention the technical things. This paper gives detail explanation about such things.Objective and Scope:The lightpaths coming on source is day by day increasing. Fragmentation of lightpath is main solution for avoiding theblocking probability. The RSA algorithm is performed for the lightpath routing and the allocation of spectrum .Themain target behind this to achieve a hitless defragmentation by exchanging of paths. The application where used thereis streaming of large video or broadcasting of video where there will be large transmission of data through one path.Goals:1) Toggling primary to backup path and vice versa using path exchanging scheme to achieve hitless defragmentationrather than spectrum retuning.2) Performing spectrum defragmentation process for dynamic process where ILP problem is not traceable.Problem StatementElastic optical network (EON) technology arises as a promising solution for future high-speed optical transport, since itcan provide superior flexibility and scalability in the spectrum allocation for seamlessly supporting diverse services,while following the rapid growth of Internet traffic. With connections being added and terminated at any moment indynamic EONs, the spectrum resources previously utilized by terminated connections are to be reallocated to newrequests. As the requests are of varied size, this leads to the appearance of small sized spectrum slot blocks and todispersed slot blocks that are not available through contiguous links. Several methods have been proposed in order tocombat this. Perhaps the simplest method of this Hitless Defragmentation with 1+1 path exchange functions. In these,the data is fragmented at the source and destination side. So we can minimize the problem of appearance of small sizedspectrum slot blocks and we can achieve a hitless defragmentation too
