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Fault Management in Burst Switched Optical WDM Networks

机译:突发交换光WDM网络中的故障管理

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摘要

To support efficiently the ever growing burst traffic on the Internet (web traffic, broadband multimedia services) over all-optical WDM networks, optical burst switching (OBS) has been proposed as a promising switching method to exploit terabit capacity of optical networks. Fault-tolerant routing for OBS networks has not been studied in the literature. In this paper, we present a distributed scheme of fault-tolerant routing using detours for OBS Networks. Offset time between control packet and subsequent data bursts is varied to accommodate detours. The performance of the routing scheme is evaluated, through simulation, in terms of the burst loss probability for different network parameters like the number of wavelengths and the traffic load. We show that by tuning the offset time, the routing can very efficiently achieve low burst loss probability.
机译:为了有效地支持全光WDM网络上Internet上不断增长的突发流量(Web流量,宽带多媒体服务),提出了光突发交换(OBS)作为一种利用光网络的千兆比特容量的有前途的交换方法。 OBS网络的容错路由尚未在文献中进行研究。在本文中,我们针对OBS网络提出了一种使用绕道的分布式容错路由方案。控制数据包与后续数据突发之间的偏移时间会有所变化,以适应弯路。通过仿真,针对不同网络参数(如波长数量和流量负载)的突发损失概率,评估了路由方案的性能。我们表明,通过调整偏移时间,路由可以非常有效地实现较低的突发丢失概率。

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