A. A. Lazar, "Programming Telecommunications Networks", IEEE Network, Oct. 1997.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....C interface operations are the establishment and release of a channel. As for the M interface, methods for loading an engine and configuring it are available. The interfaces of the collection of CPFs exposing states to binding controllers form a repository called the binding interface base (BIB) [2]. The BIB consists of QoS based application programming interfaces (APIs) used by the binding controllers and management system to control and manage the engines. The front end interfaces are open, thus allowing for end system transport and computing resources to be remotely controlled. The ....

....controllers that an application developer would normally use to build a multimedia application. Examples of such controllers are network connection control, transport monitoring, QoS parameters translation, and protocol stack building. Collectively, the BCs provide broadband kernel services [2]. A representative BC is illustrated in Fig. 4. A BC is composed of an algorithmic component and a data component [1] The algorithmic component expresses the execution logic of the service instance, while the data portion is an abstraction of its state. Controllers have four interfaces that ....

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A. A. Lazar, "Programming Telecommunication Networks," IEEE Network, Sept./Oct. 1997, pp. 8--18.

....is partitioned in order to ensure isolation between VPNs. However the concept of general resource partitioning to guarantee QoS to individual VPNs is not addressed. Open signalling and control has become a widelyaccepted mechanism for provision of VPNs in multiservice networks. The XBind project [11] produced a system similar to the Tempest in many ways, but with emphasis on providing abstractions to the service provider and user, rather than partitioning the resources at a low level, and giving the provider and user complete freedom within their partition. QoS for the Internet is being ....

Aurel A. Lazar, "Programming telecommunication networks," IEEE Network Magazine, pp. 8--18, September/October 1997.

....context, where control and management operations are separate from the data path. It was felt that the traditional closed model for service provision, in which the equipment vendor has complete control over all hardware and software in the network, has a number of serious aws [Lazar97] it hinders the rapid deployment of new and novel services; it assumes that endpoints (Customer Premises Equipment) are dumb this is no longer generally the case for data networks, yet the processing capabilities of endpoints are not capitalised upon; it impedes portability and ....

Aurel A. Lazar. Programming Telecommunication Networks. IEEE Network Magazine, pages 8-18, September/October 1997. (p 21)

.... to the network rather than switches or routers but could also be used to set up specific routing tunnels [4] Management Interface network components provide a management interface which facilitates a limited form of programming of components by invoking operations to change their behaviour [5]. This is really provided for the use of network managers but some operations may be made available to managers of valueadded, third party service providers or even user applications. For example, there could be service creation and service operation interfaces to support various virtual network, ....

Lazar, A.: Programming Telecommunication Networks. IEEE Network, Sep/Oct 1997, 8-18

....We briefly describe its current implementation as well as future work to address issues such as fault tolerance. I. INTRODUCTION It is increasingly being recognized that the current Public Switched Telephone Network (PSTN) infrastructure has an architecture that is outmoded in several respects [1]. In this paper we present the architecture, design and prototype implementation of ChaiTime, a system for the rapid development of advanced next generation telephony services that overcomes some of the limitations of the current PSTN architecture and service model. In particular, ChaiTime allows ....

A. Lazar, " Programming telecommunication networks," IEEE Network, 11, 5, 8-18, Sep./Oct. 1997.

....methodologies and software technologies for mobile networks. Software engineering has progressed to the point where systems and standards can be used for implementing platformindependent, component based, distributed software. Such advances have enabled the development of programmable [18] and active [28] network toolkits for the deployment of new services. Programmable networks [18] separate the communications hardware from the control software, allowing the modeling of hardware resources using open programmable interfaces. In this manner third party software providers can enter ....

....progressed to the point where systems and standards can be used for implementing platformindependent, component based, distributed software. Such advances have enabled the development of programmable [18] and active [28] network toolkits for the deployment of new services. Programmable networks [18] separate the communications hardware from the control software, allowing the modeling of hardware resources using open programmable interfaces. In this manner third party software providers can enter the market for telecommunications software. Work on software radios [3,21] has shown that ....

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A.A. Lazar, Programming telecommunications networks, IEEE Network (October 1997).

....developers to create routing architectures in a modular fashion, and Internet Service Providers (ISPs) to introduce new routing services into their networks more dynamically. Such a separation could provide a foundation for the programmability of routing protocols for the Internet. Programmable [7 9] and active [10 13] networks represent an emerging area of research. In [7 9] programmable network testbeds and toolkits are described that model the telecommunications hardware using a set of open programmable interfaces. Here there is an emphasis on service creation with quality of service ....

....Service Providers (ISPs) to introduce new routing services into their networks more dynamically. Such a separation could provide a foundation for the programmability of routing protocols for the Internet. Programmable [7 9] and active [10 13] networks represent an emerging area of research. In [7 9] programmable network testbeds and toolkits are described that model the telecommunications hardware using a set of open programmable interfaces. Here there is an emphasis on service creation with quality of service (QOS) and a clear distinction between information transport, network control and ....

Lazar, A.A., "Programming Telecommunication Networks", IEEE Network, vol.11, no.5, September/October 1997.

....Network Management, Seattle, Washington, USA, May 14 18, 2001. Provisioning VN s is an important objective for the telecommunications and computing industries. A competitive differentiator between Network Service Providers (SP) will be the ability to provision virtual network services efficiently [1]. These services may have different duration, connectivity, and Quality of Service (QoS) requirements. An SP meets such requirements by exploiting various routing and management mechanisms for edge and core networks. In [8] we built an analytical performance model for the whole process of ....

A. Lazar, "Programming telecommunication networks," IEEE Network, Vol. 11, No 5, September 1997.

....the network life cycle providing a systematic approach to the design, deployment, and management of distinct internetworking architectures. Spawning networks provide a foundation for composing and deploying virtual network architectures through the availability of open programmable interfaces [15], resource partitioning [9] and the virtualization of the networking infrastructure found in today s programmable networks [3] 5 3. Genesis Kernel Framework The Genesis virtual network kernel represents a next generation approach to the development of programmable networks building on our ....

....and management. 5.2 Binding Interface Base Metabuses support a hierarchy of distributed objects that realize a number of virtual network specific communication algorithms including routing, signaling, QOS control and management. At the lowest level of this hierarchy the binding interface base [15] objects provide a set of handlers to the routelet controllers and resources allowing for the programmability of a range of internetworking architectures using programming environment. The interfaces that constitute the binding interface base are illustrated in Figure 5. A VirtualRouteletState ....

Lazar, A.A., "Programming Telecommunication Networks", IEEE Network, vol.11, no.5, September/October 1997. 26

....implementation of network services and the efficiency of underlying resource control paradigm. I. INTRODUCTION Programmable Networks promote open control architectures and standard interfaces for flexible service provision to enable novel service architectures by Internet Service Vendors (ISV) [1]. Active Networks allow dynamic customization and reconfiguration of a network by means of secure code injection in it [2] Accordingly, service modules can be encapsulated in the form of code or a composition of code fragments, and dynamically installed or updated, thereby increasing the ....

A. Lazar, "Programming telecommunication networks," IEEE Network, Sept./Oct. p. 818, 1997.

....utilizing CORBA based middleware have been built, allowing experimentation on various aspects of network programmability. Furthermore, new companies (e.g. Xbind Inc. C Plane Inc. are being established to take advantage of the opening of the market for telecommunications software. The xbind [7] and mobiware [1] toolkits built at Columbia University have been the first middleware environments to investigate service creation and programmable QOS in broadband and mobile networks respectively. Such middleware environments are often called broadband kernels, because they act as resource ....

A. A. Lazar, "Programming Telecommunication Networks", IEEE Network Magazine, October 1997.

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Lazar, A.A., "Programming Telecommunication Networks", IEEE Network, September/October 1997, pp. 8-18.

....Our key thesis has been that networking fundamentals are associated with a better understanding of service creation, deployment and management, and QOS guarantees. These need to be recognized in the network architecture explicitly and can be achieved by making the network programmable [24]. Our proposal for making the network programmable [26] revolves around the simple concept of separation of hardware from software. Such a proposal has not been discussed by either the ATM Forum or the IETF. The reasons are simple: switches and routers are vertically integrated, akin to ....

....enables third party software providers to enter the market for telecommunications software; this is similar to what the PC industry has worked with for many years. As a result, building open programmable networks has become one of the key research challenges that faces the networking community [24]. The key objective here is to make the network as programmable as the PCs and thereby drastically reduce the time to market of network services. Our past research has demonstrated how architectural flexibility can be incorporated within the xbind broadband kernel [24] 25] an open programmable ....

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Lazar, A.A., "Programming Telecommunication Networks", IEEE Network, September/October 1997, pp. 8-18.

....IP stack with its fairly inexpensive, albeit unreliable UDP for inter object communication (which we term signalling) and the ATM stack for long duration communications channels (i.e. for media stream transport) that have guaranteed QOS. For more on these topics the reader is encouraged to read [1 18], where these ideas are discussed in great detail. Let us now consider the installed base of the telecommunications infrastructure. SS7 is an wellaccepted standard for network signalling in circuit switched networks, and it is being implemented for ATM networks. However, since SS7 was designed to ....

Lazar A. A. "Programming Telecommunication Networks", IEEE Network, September/October 1997, pp2-12. This paper is a revised version of the keynote address given by the author at the International Workshop on Quality of Service, Columbia University, New York, May 21-23, 1997. Published in the workshop proceedings (pp 323) .

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A. A. Lazar, "Programming Telecommunications Networks", IEEE Network, Oct. 1997.

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Lazar A. Programming telecommunication networks. IEEE Network Magazine 1997.

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A. Lazar, "Programming Telecommunication Networks," IEEE Network, Oct. 1997.

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A. Lazar, "Programming Telecommunication Networks", IEEE Network Magazine , October 1997.

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A.A. Lazar, Programming telecommunication networks, IEEE Networks 11(5) (1997) 8--18.

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A.A. Lazar, Programming telecommunication networks, IEEE Networks 11(5) (1997) 8--18.

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A.A.Lazar, "Programming Telecommunication Networks", IEEE Network Magazine, Sept./Oct 1997. 133

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A. A. Lazar, "Programming Telecommunication Networks", IEEE Network, October 1997.

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A. Lazar. Programming Telecommunication Networks. IEEE Networks, 11(5):8-18, September/October, 1997.

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A. A. Lazar, Programming Telecommunication Networks, IEEE Network, October 1997.

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Lazar, A.A.,: Programming Telecommunication Networks, IEEE Network, vol. 11, no.5, September/October 1997.

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