Multilayer traffic engineering for GMPLS-enabled networks

Vigoureux, Martin; Berde, Bela; Andersson, Loa; Cinkler, Tibor; Levrau, Lieven; Ondata, M.; Colle, Didier; Fernández-Palacios, Juan Pedro; Jäger, Monika

doi:10.1109/mcom.2005.1470810

Cited by 33 publications

(19 citation statements)

References 4 publications

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“…Each connection in the virtual topology is mapped to the physical topology by the RWA algorithm and all the lightpaths are established along the calculated route [11][12][13]. At this time, the focus of topology design is mainly put on the optimization of physical resource [14,15]. As Fig.…”

Section: Physical Topology Virtual Topology and Pre-configured Topologymentioning

confidence: 99%

Routing on pre-configured topology for dynamic optical networks

Zhao¹,

Zhang²,

Han³

et al. 2008

Photon Netw Commun

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Dynamic optical networks are the physical basis of the development and evolution of the next generation network (NGN). By pre-configuring the resources of dynamic optical networks, we can reconstruct the topology, increase the number of direct routes, and then optimize the performance of routing and forwarding. This article analyzes the characteristics of the pre-configuration process, and gives the corresponding mathematical description. A planning scheme of resource pre-configuration that forms a pre-configured topology different from physical topology and virtual topology has been introduced for dynamic optical networks. Two dynamic routing algorithms have been run on the pre-configured topology. Simulations results show that the connection establishing time of the control plane could be significantly reduced by using the resource pre-configuration strategy.

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Section: Physical Topology Virtual Topology and Pre-configured Topologymentioning

confidence: 99%

Routing on pre-configured topology for dynamic optical networks

Zhao¹,

Zhang²,

Han³

et al. 2008

Photon Netw Commun

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“…We assume either the peer interconnection model or the vertically integrated multi-region network (MRN) node model for multi-layer networks [2]. Then the network layers set the resources jointly, i.e., the control plane has knowledge of both the layers to best accommodate the arriving traffic demands.…”

Section: Shadow Capacities For λ-Path Fragmentation and De-fragmentationmentioning

confidence: 99%

“…Having multiple different regions within a network is referred to as a Multi-Region network [1] [2].…”

Section: Introductionmentioning

confidence: 99%

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Multi-Layer Traffic Engineering Through Adaptive λ-Path Fragmentation and De-fragmentation

Cinkler

Hegyi

Asztalos

et al. 2006

NETWORKING 2006. Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile A

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Abstract. In Multi-Layer networks, where more than one layer is dynamic, i.e., connections are set up using not only the upper, e.g., IP layer but the underlying wavelength layer as well leads often to suboptimal performance due to long wavelength paths, that do not allow routing the traffic along the shortest path. The role of MLTE (Multi-Layer Traffic Engineering) is to cut these long wavelength paths into parts (fragments) that allow better routing at the upper layer (fragmentation), or to concatenate two or more fragments into longer paths (defragmentation) when the network load is low and therefore less hops are preferred.In this paper we present a new model (GG: Grooming Graph) and an algorithm for this model that supports Fragmentation and DeFragmentation of wavelength paths making the network always instantly adapt to changing traffic conditions. We introduce the notion of shadow capacities to model "lightpath tailoring". We implicitly assume that the wavelength paths carry such, e.g., IP traffic that can be interrupted for a few microseconds and that even allows minor packet reordering.To show the superior performance of our approach in various network and traffic conditions we have carried out an intensive simulation study.

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“…As noted in previous work [1][2][3], it is highly desirable to efficiently combine the benefits of both optical and electronic domains, according to some policy. In a typical scenario, incoming Label Switched Paths (LSPs) arrive to a multilayercapable router, which has to decide whether to perform optical or electronic switching ( fig.…”

Section: Introductionmentioning

confidence: 99%

A Bayesian Decision Theory Approach for the Techno-Economic Analysis of an All-Optical Router

López

Hernández

Aracil

et al.

Optical Network Design and Modeling

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Abstract. Typically, core networks are provided with both optical and electronic physical layers. However, the interaction between the two layers is at present limited, since most of the traditional transport functionalities, such as traffic engineering, switching and restoration, are carried in the IP/MPLS layer. In this light, the research community has paid little attention to the potential benefits of the interaction between layers, multilayer capabilities, on attempts to improve the Quality of Service control. This work shows when to move incoming Label Switched Paths (LSPs) between layers based on a multilayer mechanism that trades off a QoS metric, such as end-to-end delay, and techno-economic aspects. Such mechanism follows the Bayesian decision theory, and is tested with a set of representative case scenarios.

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Multilayer traffic engineering for GMPLS-enabled networks

Cited by 33 publications

References 4 publications

Routing on pre-configured topology for dynamic optical networks

Routing on pre-configured topology for dynamic optical networks

Multi-Layer Traffic Engineering Through Adaptive λ-Path Fragmentation and De-fragmentation

A Bayesian Decision Theory Approach for the Techno-Economic Analysis of an All-Optical Router

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