Martin Vigoureux

Impact of intermediate traffic grouping on the dimensioning of multi-granularity optical networks

We demonstrate the interest of multi-granularity optical networks to decrease the number of ports for the optical switching matrices by grouping some wavelengths into bands and some bands into fibers at some intermediate nodes.

Multi-region networks: generalized multi-protocol label switching (GMPLS) as enabler for vertical integration

Multi-region networks (MRN) is the generalized multi-protocol label switching (GMPLS)-based solution for vertical integration. Considering limitations of current interworking models and requirements for integration, MRN gives the possibility to operate domains hosting several technologies as a single network. While using a single instance of the control plane, multi-layer operations are profiled and optimized thanks to a limited number of protocol extensions. Routing and signaling are extended in order to support internal node adaptation capability and deterministic switching capability indication along the explicit route, respectively.

A scalable transparent waveband-based optical metropolitan network

We propose a novel transparent, waveband-based, dual hubbed and protected DWDM optical metropolitan network with hierarchical rings, offering attractive cost and scalability properties. We analyze its physical feasibility and economic relevance in the sub-terabit/s capacity range.

Improving network performance through policy-based management applied to generalized multi-protocol label switching

Automatically switched circuit establishment is a big step for the operators towards the automation of transport services. The aim is to reduce OPEX while improving service capabilities through a distributed generalized multi-protocol label switching (GMPLS) control plane. Nevertheless, the control plane may not operate on its own and, hence, network operators need a holistic service production platform where intensified traffic engineering (TE) capabilities exist when operating the control plane. The aim of this paper is to point out and discuss issues to be addressed and to provide guiding principles as well as a policy-based management (PBM) solution pertaining to enhanced TE related to the GMPLS control plane protocols and the corresponding network management issues.

Service level agreement in optical networks

This article proposes a Service Level Agreement applied to the optical domain (O-SLA), which is expected to be the near and long term network technology thanks, among other things, to the great bandwidth capacity offered by optical devices. After an exposition of the rationale behind an optical SLA, parameters which could enter in this O-SLA, as well as their values for four classes of services, are proposed. Different client (wavelength or sub-wavelength) and services types (from leased wavelength to bandwidth on demand) are distinguished when necessary.

Service Level Agreement in optical networks

This article proposes a Service Level Agreement applied to the optical domain (O-sla), which is expected to be the near and long term network technology thanks, among other things, to the great bandwidth capacity offered by optical devices. After an exposition of the rationale behind an optical sla, parameters which could enter in thisO-sla, as well as their values for four classes of services, are proposed. Different client (wavelength or sub-wavelength) and services types (from leased wavelength to bandwidth on demand) are distinguished when necessary.RésuméCet article propose un Contrat de Niveau Service appliqué au domaine optique. Ce dernier est sensé être la future technologie réseau à court et long terme grâce, entre autres, à la grande capacité en bande passante offerte par les routeurs optiques. Après avoir démontré le besoin en Contrat de Niveau Service dans un réseau optique, nous proposerons des paramètres qui pourraient constituer la Spécification de Niveau Service (Sls) optique, ainsi que leurs valeurs pour quatre classes de services. Nous distinguons, lorsque nécessaire, différents types de clients (longueur d’onde et sous-longueur d’onde) et différents types de services (de la longueur d’onde laissée à la bande passante à la demande).

Multi-Layer Recovery Enabled with End-to-End Signaling

Within GMPLS framework, the signaling protocol Resource reSerVation Protocol with Traffic Engineering extensions (RSVP-TE) is extended to support the requirements of an Automated Switched Optical Network architecture. This paper presents the extensions of the end-to-end connection services in an overlay network built on two control planes. RSVP-TE protocol extensions are first described between an IP/MPLS router and a SDH/GMPLS core optical cross-connect, defining GMPLS-UNI. Dimensioning of three scenarios proving the benefits of GMPLS-UNI is discussed.