Minimizing the additional costs due to Router Outage in IP-over-EON using Adaptive Routing

Ridwansyah, S. Syarif, Dewiani, Wardi
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引用次数: 1

Abstract

When a router fails in IP-over-EON, some traffics are affected. Each affected traffic attempts to be restored through the best alternate path among alternate paths offered. Some conventional routing schemes are commonly used to solve problems in IP over optical networks, namely k-shortest paths (KSP), hop count (HC), and link-disjoint (LD). The three schemes are fixed-alternate routing (FAR) schemes. However, the alternate paths it generates cannot adjust to the current network conditions due to a router outage. Therefore, this study proposes an adaptive routing, i.e., adaptive lightpath reconfiguration paths (ALRP) routing. ALRP routing explores the number of paths between the source and destination pairs for each affected traffic and then selects the best alternate paths by maximizing the utilization of unaffected lightpaths. The goal is to minimize costs relate to the number of lightpath reconfiguration and additional power consumption due to the recovery of affected traffic. Based on simulations conducted using two network topologies, namely seven-node topology and NSFNET topology, it was found that the proposed ALRP routing produced better results compared to the three conventional routing schemes in minimizing the addition of both costs.
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使用自适应路由最小化由于IP-over-EON路由器中断造成的额外成本
当路由器在IP-over-EON中出现故障时,会影响部分流量。每个受影响的流量尝试通过提供的备选路径中的最佳备选路径进行恢复。一些传统的路由方案通常用于解决IP over光网络中的问题,即k-最短路径(KSP)、跳数(HC)和链路不连接(LD)。这三种方案都是固定备用路由(FAR)方案。但是,由于路由器中断,它生成的备用路径不能适应当前的网络条件。因此,本研究提出一种自适应路由,即自适应光路重构路径(ALRP)路由。ALRP路由为每个受影响的流量探索源和目的地对之间的路径数量,然后通过最大化未受影响的光路的利用率来选择最佳备用路径。目标是最小化与光路重新配置的数量相关的成本,以及由于恢复受影响的流量而产生的额外功耗。通过对七节点拓扑和NSFNET拓扑两种网络拓扑进行仿真,结果表明,与传统的三种路由方案相比,所提出的ALRP路由方案在最小化两种成本的附加方面具有更好的效果。
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