an intrinsic te approach for end-to-end qos provisioning in obs networks using static load-balanced routing strategies一种内在的te方法端到端光突发交换网络qos提供使用静态负载均衡路由策略.pdfVIP

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an intrinsic te approach for end-to-end qos provisioning in obs networks using static load-balanced routing strategies一种内在的te方法端到端光突发交换网络qos提供使用静态负载均衡路由策略.pdf

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an intrinsic te approach for end-to-end qos provisioning in obs networks using static load-balanced routing strategies一种内在的te方法端到端光突发交换网络qos提供使用静态负载均衡路由策略

Future Internet 2010, 2, 559-586; doi:10.3390/ﬁ2040559 OPEN ACCESS future internet ISSN 1999-5903 /journal/futureinternet Article An Intrinsic TE Approach for End-to-End QoS Provisioning in OBS Networks Using Static Load-Balanced Routing Strategies Alvaro L. Barradas and Maria do Carmo R. Medeiros Center of Electronics Optoelectronics and Telecommunications (CEOT), University of the Algarve, FCT Campus de Gambelas, 8005-139 Faro, Portugal; E-Mail: cmedeiro@ualg.pt Author to whom correspondence should be addressed; E-Mail: abarra@ualg.pt; Tel.: +351 289800905; Fax: +351 289800066. Received: 9 October 2010; in revised form: 21 October 2010 / Accepted: 21 October 2010 / Published: 22 October 2010 Abstract: Optical burst switching provides a feasible paradigm for the next IP over optical backbones. However its burst loss performance can be highly affected by burst contention. In this paper we discuss trafﬁc engineering approaches for path selection with the objective to minimize contention using only topological information. The discussed strategies are based on balancing the trafﬁc across the network in order to reduce congestion without incurring into link state protocol penalties. The routing strategies are evaluated by simulation on an optical burst switching model speciﬁcally developed for the purpose with OMNeT++. Results show that our strategies outperform the traditionally used shortest path routing to an extent that depends on the network connectivity. Keywords: optical networks; optical burst switching; pre-planned