Efficient multi-layer operational strategies for survivable IP-over-WDM networks
Efficient multi-layer operational strategies for survivable IP-over-WDM networks
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DOI：
10.1109/jsac.2006.1677252
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发表时间：
2006-08
影响因子：
16.4
通讯作者：
K. Ratnam;Luying Zhou;G. Mohan
中科院分区：
文献类型：
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作者：
K. Ratnam;Luying Zhou;G. Mohan
本文研究了动态流量到达场景下IP-over-WDM网络在满足网络服务提供商的要求：保持可接受的呼叫接受率、满足请求的保护要求和控制组件故障时的信令开销之间的平衡问题。满足所有这些方面是一项艰巨的任务，特别是当流量模式本质上是动态的，并且采用单层保护方法时。在这项工作中，我们首先提出了一种多层保护方案，以便在IP-over-WDM网络中的阻塞性能和信令开销之间实现更好和可接受的权衡。我们在提议的方案中定义了各种操作设置，并研究了它们对方案性能的影响。该方案的一个重要特点是，这些设置允许网络服务提供商根据网络策略和流量需求选择合适的操作策略来实现所需的权衡。然后，我们提出了一种动态流量的自适应保护方法，在考虑阻塞性能和信令开销的同时，尽可能地为请求提供更好的保护。通过仿真实验对各方案的性能进行了评价，验证了其有效性
This paper addresses the problem of achieving a balance in satisfying a network service provider's requirements: maintaining an acceptable call acceptance rate, satisfying protection requirements of requests, and controlling the signaling overhead in case of a component failure, in IP-over-WDM networks in a dynamic traffic arrival scenario. Satisfying all these aspects is a difficult task especially when the traffic pattern is dynamic in nature and a single layer protection approach is followed. In this work, first we propose a multi-layer protection scheme for achieving a better and acceptable tradeoff between blocking performance and signaling overhead in IP-over-WDM networks. We define various operational settings in the proposed scheme and investigate their impacts on the performance of the scheme. An important feature of this scheme is that, these settings allow a network service provider to select a suitable operational strategy for achieving the desired tradeoff based on network's policy and traffic demand. Then we propose an adaptive protection approach for dynamic traffic in consideration of providing better protection to requests as much as possible while considering blocking performance and signaling overhead. Through simulation experiments we evaluate the performance of the proposals and demonstrate their effectiveness