Performance Evaluation of Multi-Layer Traffic Engineering Enabled IP-over-ION Networks

Yan, Qiang; Colle, Didier; Maesschalck, Sophie De; Puype, Bart; Lievens, Ilse; Pickavet, Mario; Demeester, Piet

doi:10.1007/s11107-004-6432-3

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…In the integrated scenario, Multilayer Traffic Engineering (MTE), the technique that combines traditional load balancing in the IP layer with dynamic lightpath establishment in the optical layer [6,16] can be reinforced with integrated routing techniques [4,5,9,12,14]. Integrated IP/WDM routing facilitates the routing decision phase by allowing a node to have a complete knowledge of the IP and WDM domains when accommodating traffic.…”

Section: Introductionmentioning

confidence: 99%

Integrated routing in GMPLS-based IP/WDM networks

et al. 2010

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The Internet traffic evolution has forced network operators to migrate toward an integrated infrastructure which brings the IP and optical layers under a unified model. The integration between the two technologies has been facilitated by the development of the Generalized Multi Protocol Label Switching. In the integrated scenario, Multilayer Traffic Engineering can be reinforced with integrated routing techniques. Integrated IP/WDM routing facilitates the routing decision phase by allowing a node to have a complete knowledge of the IP and WDM domains when accommodating traffic. This study focuses on integrated IP/WDM routing. We analyze two basic policies widely discussed in literature: one policy prioritizes the traffic accommodation on the virtual topology, while the other prioritizes the traffic accommodation on the physical topology. We show that both the mechanisms do not lead to efficient resource utilization because they tend to congest one layer more than the other one. We propose an adaptive heuristic which combines the advantages of both the policies. When accommodating traffic, the proposed approach selects the appropriate layer depending on the resource utilization being experienced in the virtual and the physical topologies. We demonstrate via simulations that the cross-layer resource optimization executed by the proposed scheme achieves significant improvements in terms of blocking ratio.

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Section: Introductionmentioning

confidence: 99%

Integrated routing in GMPLS-based IP/WDM networks

et al. 2010

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“…Factually, some experiment projects have been done to get high utilization of network resource by the cooperation of the IP and the optical layers [4][5][6][7]. Fig.1 describes the evolving trends of optical network.…”

Section: Introductionmentioning

confidence: 99%

Integrated IP/optical routing with multiple levels of services in GMPLS-based intelligent optical network

Cui

Zhang

et al. 2005

Network Architectures, Management, and Applications III

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With the drastic increasing of data traffic, the optical transport network will be adjusted to be services-oriented networks. Its traffic engineering system should be able to dynamically react to traffic changes while at the same time fulfilling QoS requirements for different classes of service. So the next generation optical network will handle priority, preemption mechanisms, and traffic rerouting in order to concurrently accommodate the largest amount of traffic. At the same time, transport networks need to evolve so as to drastically reduce both deployment costs and operating expenses.One of a reasonable strategy to achieve the goals is to simplify the network architecture by reducing the number of layers.GMPLS protocols enable the coordination between the IP and the optical layers and provide classified services. The collaboration of both layers in the routing process leads to optimization of network performance. Simulation results show the network performance for different priority strategies on resource allocation.

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Service differentiation in IP/MPLS over ASON/GMPLS networks

et al. 2009

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There is a general agreement that the future infrastructure for broadband communications will consist of Automatically Switched Optical Networks (ASONs) controlled by the Generalized Multi-Protocol Label Switching (GMPLS) control plane. Due to the convergence of most services on the Internet Protocol (IP) layer, ASON/GMPLS networks need to provide transport for a variety of applications having different Quality of Service (QoS) requirements. This implies that the Differentiated Service paradigm, which improves the QoS in pure IP networks, needs to be extended to the new underlying infrastructure. This article proposes and compares three schemes for the service differentiation in IP/MPLS over ASON/GMPLS networks. Simulation results demonstrate that a fair trade-off between QoS and resource utilization is achieved when combining routing policy differentiation (RPD), virtual topology differentiation (VTD), and virtual topology sharing (VTS) techniques. The RPD technique decides on the multilayer routing policy to apply depending on the Class of Service (CoS). The VTD technique transports different CoS over different independent virtual topologies. The VTS technique introduces a certain degree of resource sharing among the different virtual topologies

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Performance Evaluation of Multi-Layer Traffic Engineering Enabled IP-over-ION Networks

Cited by 9 publications

References 13 publications

Integrated routing in GMPLS-based IP/WDM networks

Integrated routing in GMPLS-based IP/WDM networks

Integrated IP/optical routing with multiple levels of services in GMPLS-based intelligent optical network

Service differentiation in IP/MPLS over ASON/GMPLS networks

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