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92 Deploying and Managing IP over WDM Networks • End users are entities that interact with the service providers to obtain the effect of the service. End users may be humans or an automated piece of application software. • This is their only business role—consuming services—and not trying to make a profit out of them. 2. Value-added service providers (VASPs), whose role is oriented towards customer management and adding value. Customers buy services from VASPs, which act as retailers of telco services, providing services other than connectivity. 3. Network service providers play the role of both network provider and network management provider. Their role is to support VASPs to provide their services, acting basically as managed connectivity providers. They give a management interface to VASPs, which enables them to request connections between arbitrary end points in the global network. Note that these business roles play the role of user and provider towards other business roles For example, a VASP provides services to customers—the provider role—but uses services from network service providers—now playing the user role. Several business relationships can be established among the different roles. Several roles can be performed by a single business entity (the actor or player or stakeholder) at the same time. For example, a player in the network service provider role can also be in the role of a VASP. This is the case for companies who own their own transport network and want to make revenue in the new markets (e.g., an incumbent telco operator). The following actors can be defined: • Incumbent/traditional telecommunication providers that used to be called PNOs: these players have an incumbent position in the market, as they have extended fixed network infrastructure, both in the local loop (copper) and in the backbone all over the country. They can play multiple roles in once, such as the roles of network service provider, VASP and Internet service provider (ISP). • Competitive/new entrant telecommunications providers: these providers are new entrants following the market deregulation and are competing with the incumbents. They usually do not have extended network infrastructure in the local loop and build their backbone on top of the incumbent ones. They use the local loop either by the unbundling deregulation procedure or by owning licenses in the wireless local loop. They gradually build their own backbone network. Examples of such
carriers are the ISPs, who extend their activities into telephony and other services. 6.2.2 Business Case The WINMAN Management System Concept 93 Operators wish to build carrier-scale multiservice IP networks to provide a wealth of new multimedia services to their customers. All of these services have to be cost effectively, rapidly and reliably deployed to millions of customers. In parallel to the deployment of the network, operators are faced with the challenge of installing their respective OSSs. The next paragraphs describe the competitive advantages that the availability of a system based on the WINMAN solution will provide to the network service providers. 6.2.2.1 Service Provisioning To date, ISPs have opted to offer one-size-fits-all, flat-rate plans that allow customers unlimited use of standard services. The ability to offer premium-grade services such as guaranteed bandwidth, voice over IP, and VPN are dependent on the ability to define personalized user policies that map users to the class of service to which they are subscribed. WINMAN will make policy-based IP connectivity service provisioning a reality, thus empowering service providers to quickly bring new differentiated services to market. In addition, WINMAN will pave the way for flowthrough automation in conjunction with other OSS applications, by means of standardized interfaces. WINMAN will consider system level specification (SLS) parameters derived from SLAs, thus fulfilling the required QoS. 6.2.2.2 Network Provisioning The network provisioning as well as the network infrastructure itself has become increasingly complex. The manual configuration of service pipes on the network is costly, time consuming, and error prone. As the demand for timely delivery of more innovative services increases, the requirement to automate the provisioning process is stronger than ever. Automating the provisioning process allows service providers to scale their operations and improve the quality of end-to-end deployment for new customers. The main functions in the network provisioning process are: • The provisioning of end-to-end IP paths over lightpaths using MPLS technology. In this context the WINMAN system will be capable of calculating, designing, and creating MPLS LSPs over the corresponding lightpaths in the optical domain. For completeness as well as for backwards compatibility, the provisioning of IP plain connectivity (connectionless mode) is also considered.
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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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checking is done at the very beginn
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8.4.1 The Inventory Model The inven
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for any of the three WINMAN NMSs. T
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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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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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