A global internet infrastructure
The Internet plays an essential role in providing us with a global infrastructure for communication and means for accessing instantly a vast amount of worldwide information. The Internet will continue to shape our future especially now that it has been embraced and deployed as an infrastructure for businesses and for social and collaboration activities. The current Internet, however, was-not designed for these purposes when it was first ?conceived and hence it has experienced many serious difficulties and -limitations over the last few years: security, quality of service, mobility, and service on~demand capability The next generation Internet is more about services and applications that it can enable and offer. For this to be realised, considerations concerning high-level abstraction of the Internet and the scope of its usage are essential in designing next generation networks. This paper suggests a three~layer abstraction architecture that leverages what we learnt from the past and looks forward tol the future through innovations: an underlying network abstraction, an overlay abstraction, and a service/application abstraction. The paper also describes a preliminary implementation of. the architecture to demonstrate its feasibility.
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