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216 Deploying and Managing IP over WDM Networks critical quality characteristics are the nonfunctional attributes: openness, flexibility, modularity, scalability, portability, and robustness. Although nonfunctional attributes are quite important for an NMS, the main substance of an integrated NMS is its functional characteristics. The WINMAN solution was evaluated to see if was capable of providing managed end-to-end ICSs and, more specifically, if it was capable of performing integrated provisioning of IP/MPLS LSPs over optical paths. The experiments that are conducted for the functional certification of the WINMAN application are lightpath creation, IP/MPLS path creation, ICS provisioning, and network inventory consistency to network infrastructure. The WINMAN functional attributes are validated using an integrated network provisioning scenario. The business case relevant to this scenario is that when the available IP resources cannot provide the requested QoS, a new WDM path should be established by discovering additional resources, resulting in an additional IP link. This additional IP link enables the creation of an alternative MPLS LSP to serve the needed QoS. The WINMAN system succeeded in carrying out the provisioning of connectivity services with guaranteed QoS (in terms of guaranteed end-to-end bandwidth provisioning) in an automatic and fast way by making the appropriate multilayer changes to the underlying network. Furthermore, it was validated by the performed experiments that the WINMAN system, due to the special care taken during the design and implementations phases, inherently supports attributes of modularity, flexibility, portability, and openness, as it can integrate new entities with minimal side effects and can work in a distributed way that avoids or corrects malfunctioning parts. As an overall assessment, the evaluation process demonstrated that a system for integrated configuration management is a feasible and valuable solution for the deployment of IP over WDM networks. References [1] TMF, “Telecom Operations Map,” Version 2.0, November 1999. [2] The IXIA product, www.ixiacom.com/products/chassis/IXIAChassis.php, December 2002. [3] Zeltserman, D., and G. Puoplo, Building Network Management Tools with Tcl/Tk, Prentice Hall, 1998. [4] Katopodis, H., and A. Lyratzis, “Design of Data Communication Network for TMN: The OTE Case,” Network Management Development Group, internal report, Athens, Greece, June 10–16, 1998.
12 Integration of IP over WDM: The LION Project Approach 12.1 Introduction The IST Project LION is a 3-year project led by Telecom Italia Lab and started in February 2000. The Consortium, partially funded by the European Commission, consists of European and Japanese carriers, U.S. and European manufacturers, and leading European universities working together to develop and validate new optical networking standards. Project members include Agilent Technologies Italy, Cisco Systems International B.V., Interuniversity Microelectronics Centre, National Technical University of Athens, Nippon Telegraph and Telephone Company, Siemens Information and Communication Networks, Sirti S.p.A., T-Systems Nova, The University of Mining and Metallurgy, Telekomunikacja Polska SA, Tellium, and the Universitat Politècnica de Catalunya. The main goals of the IST Project LION are to study, develop, and experimentally assess an ASON/GMPLS carrying multiple clients (e.g., IP/MPLS and SDH). In particular, an ASON is a transport network capable of supporting both classical leased line connections and two other innovative transport services: soft permanent and switched optical connections. As depicted in Figure 12.1, soft permanent connections are set up from the management system, which uses network-generated signaling and routing protocols to establish connections; on the other hand, switched connections can be directly set up and released by the customer on demand using signaling and routing protocols. Specifically, these innovative functionalities for the dynamic setup and tear down of optical connection are achieved by introducing the so-called 217
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Contents Foreword xv Preface xix Ac
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Contents vii 4.2 The WDM Network El
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Contents ix 8 Management System Des
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Contents xi 10.3 The WINMAN Testbed
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Contents xiii 13.4.1 Adoption of Op
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xvi Deploying and Managing IP over
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Preface The integration of the Inte
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Coauthors of the IST-OPTIMIST proje
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1 Introduction 1.1 The Importance o
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communications. These legacy networ
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Within these programs, consortia of
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4 Management of the WDM Network Lay
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λ1λ 2 ··· λ w λ1λ 2 ···
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Management of the WDM Network Layer
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• Lightpaths that may be protecte
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• Wavelength continuity. Two conn
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4.4.4 Management Interfaces Managem
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5 IP Over WDM Integration Mechanism
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STM1/ATM interface requirements. Fo
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IP router OLA The version of IP ove
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Gigabit Ethernet interface GbE prov
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the IETF extended the MPLambdaS fra
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ASON/ASTN. ITU-T will try to push t
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The proposed management solution is
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IP Over WDM Integration Mechanisms
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Management System Design and Implem
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checking is done at the very beginn
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for any of the three WINMAN NMSs. T
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About the Editors Joan Serrat recei
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