A traffic engineering system for multiloyer networks based on the GMPLS paradigm

Iovanna, Paola; Sabella, R.; Settembre, M.

doi:10.1109/mnet.2003.1188284

Cited by 54 publications

(28 citation statements)

References 14 publications

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“…Multilayer routing can be done by considering a single graph model. In [3], MTLE is separated in offline logical topology design vs. online dynamic routing and capacity adjustment. A straightforward approach [4] establishes high-and low-traffic water marks to reconfigure the logical topology.…”

Section: Ip/mpls Logical Topology Construction and Proactive Mltementioning

confidence: 99%

Prediction-based routing as RWA in multilayer traffic engineering

et al. 2011

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Multilayer traffic engineering (MLTE) allows coping with ever-increasing and varying traffic demands in IP-over-Optical multilayer networks. It utilizes cross-layer TE (Traffic Engineering) techniques to provision optical lightpath capacity to the IP/MPLS (Internet Protocol/ MultiProtocol Label Switching) logical topology on-demand. Such provisioning however causes optical connection arrival rates that pose strong performance requirements to Routing and Wavelength Assignment (RWA) strategies. Collecting up-to-date network information for the RWA with rapidly changing network states can be quite difficult. Exposing optical layer state information to the IP layer in the overlay model, or transforming this optical layer information in a workable representation in an integrated control plane is similarly problematic. Prediction-Based Routing (PBR) has been proposed as a RWA mechanism for optical transport networks; it bases routing not on possibly inaccurate or outdated network state, but instead on previous connections set-up. In this article, we propose to implement PBR as the RWA mechanism in the optical layer of a multilayer network, and use the predictive capabilities of PBR to expose dynamic optical network information into the multilayer traffic engineering algorithm with minimal control plane overhead. Some simulations show the benefits of using the PBR in the optical layer for MLTE purposes.

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Section: Ip/mpls Logical Topology Construction and Proactive Mltementioning

confidence: 99%

Prediction-based routing as RWA in multilayer traffic engineering

et al. 2011

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“…Various MTE-type strategies exist. For example, the integrated approach [11] routes incoming traffic requests using a multin n n n [12] separates the problem into logical topology design (offline), dynamic routing (online), and bandwidth adjustment (traffic-driven) modules. In [13] routing is performed over a single graph that represents the IP/MPLS and optical networks, its main contribution being the cost model to integrate both layers in a single model.…”

Section: Mte Strategy As a Recovery Mechanismmentioning

confidence: 99%

“…The logical topology configuration is a side-effect of the virtual mesh routing: the remaining virtual mesh IP links that carry traffic are then the only ones to be actually set up, thereby optimizing the logical topology for the traffic pattern at hand. This means all aspects of MTE are handled through a single path calculation -no separate mechanisms as in [12] are necessary.…”

Section: Mte Strategy As a Recovery Mechanismmentioning

confidence: 99%

Benefits of GMPLS for multilayer recovery

Puype

Vasseur²,

Groebbens³

et al. 2005

IEEE Commun. Mag.

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IP-based backbone networks are gradually moving towards a network model consisting of highspeed routers that are flexibly interconnected by lightpaths set up by an optical transport network consisting of WDM links and optical cross-connects. Recovery mechanisms at both network layers will be crucial to reach the high availability requirements of critical services. In such a model, the GMPLS protocol suite can provide a distributed control plane that can be used to deliver rapid and dynamic circuit provisioning of end-to-end optical lightpaths. This article explains that it can be very beneficial to exploit this functionality to enhance the cost effectiveness of multilayer recovery significantly. Several practical case studies illustrate this concept and highlight the opportunities and challenges to be faced.

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“…This architecture encompassing mostly Internet Engineering Task Force (IETF) standardized protocols, takes advantage of MPLS flexibility to address wireless-specific requirements such as micro mobility as well as nonwireless specific requirements, such as traffic engineering and quality of service and does not involve specific requirements in the mobile terminal for initiating label-switched paths over the wireless interface and allowing end to end interconnection to the backbone network. Quintero and Frutos (2009) analysed the performance of a Traffic Engineering (TE) strategy for MPLS based network, which is described in Iovanna et al (2003) is carried out. Specifically the implementation based on a distributed control plane (Internet-like) has been investigated and realized by means of a test bed where real signaling protocol (RSVP-TE) and routing protocols (OSPF-TE) have been implemented.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Traffic Management Model for Multi-Protocol Label Switching Network

Naganathan¹,

Rajagopalan²

2011

American Journal of Applied Sciences

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Problem statement: MPLS is a highly scalable, protocol agnostic and data-carrying mechanism. Traffic engineering is the major research area in MPLS due to the emerging requirements of MPLS and the internet usage. A major objective of traffic engineering is to minimize or eliminate high-loss situations. Another goal of traffic engineering is to balance the Quality of Service (QoS) against the cost of operating and maintaining the network. Approach: This study proposes a hybrid model for effective traffic management in the MPLS network which contains two models namely traffic flow analysis model and ant colony optimization based routing model. The traffic analysis model will analyses the traffic pattern and identifies the low load path. And the ACO is used for effective transmission in the low load path. Results: The proposed HTM provides lesser packet loss and less response time than existing routing protocol. Conclusion: This hybrid model enables traffic free environment in the congested MPLS network. The routing packet size of the proposed HTM is higher than ACO but comparing existing traditional routing protocol like OSPF and RIP, the packet size is very less.

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A traffic engineering system for multiloyer networks based on the GMPLS paradigm

Cited by 54 publications

References 14 publications

Prediction-based routing as RWA in multilayer traffic engineering

Prediction-based routing as RWA in multilayer traffic engineering

Benefits of GMPLS for multilayer recovery

Hybrid Traffic Management Model for Multi-Protocol Label Switching Network

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