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130 Deploying and Managing IP over WDM Networks 7.4 Generic Management System Architecture This WINMAN architecture looks at the NMSs as derived from a generic solution handling the functional management areas: fault, configuration, and performance management. This generic NMS handles in a very similar way any type of domain whether it is WDM, IP, or INMS. Therefore, this architecture is also extensible to manage any other type of technology domain (e.g., ATM or SDH). Figure 7.4 shows the system class diagram for the three types of NMSs, which are inherited, from the abstract or generic NMS. All of the NMS functionality is contained in the abstract NMS. This functionality is described by the following subclasses: • GUI; • Fault management, depicted as FM in Figure 7.4; • Configuration management, depicted as CM in Figure 7.4; • Performance management, depicted as PM in Figure 7.4; • Database, depicted as DB in Figure 7.4; • Northbound, depicted as NB Figure 7.4; • Southbound, depicted as SB Figure 7.4. Each of the specific NMSs contains all of the functionality of the components and therefore provides a full and independent management system. Under this point of view, WINMAN adopts the polymorphism principle so that each time a new type of NMS is inherited for a new type of network, the same models could be used without changing the architecture itself. This view also shows the difference between the networks and the software management components. The different types of NMSs are related by inheritance to the abstract NMS object. The different components of the network management functionality are associated to the abstract NMS by means of containment relationships. 7.4.1 The Three-Tiers Concept The three-tiers concept [4] has been developed in the world of browser applications when the need for independence between the persistence layer and server process to the business logic and the presentation is a must. The same need for independence between layers was identified for the WINMAN generic architecture.
NMS INMS WDM NMS IP NMS The WINMAN System Architecture 131 Figure 7.4 Class diagram for the generic NMS architecture. When looking at the WINMAN NMS architecture at the horizontal view, we can see the three-tiers concept made reality. In fact, as shown in Figure 7.5, WINMAN is decomposed horizontally in the client/presentation layer, the middle tier/business logic layer, and finally the server/persistency layer. A description of each one follows. 7.4.1.1 The Client/Presentation Side This layer contains the GUI itself and the view manager. These two components permit there to be a thin client that enters the GUI logic in the view manager. The GUI can be independent from the server, thus having one point of contact to all of the WINMAN functionality—the view manager. 7.4.1.2 The Middle Tier/Business Logic Side This layer contains the business logic such as the NMS processes, data manipulation, rule-base systems, and the communication with the EMSs for the GUI FM CM PM DB NB SB
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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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8 Deploying and Managing IP over WD
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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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11 Evaluation of IP over WDM Manage
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Evaluation of IP over WDM Managemen
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system will still perform without i
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11.5.3.1 General Remarks The manage
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12 Integration of IP over WDM: The
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domains with different management t
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Integration of IP over WDM: The LIO
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ClientCTP Integration of IP over WD
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AstnTrail AstnTTP NL resource Integ
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12.4.1.1 TILAB Equipment Integratio
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12.4.1.3 Tellium Equipment Integrat
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At least two other possible solutio
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13 Future Developments and Challeng
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Future Developments and Challenges
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About the Editors Joan Serrat recei
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