Hugo Eiji Tibana Carvalho,  Natalia Castro Fernandes,  Otto Carlos Muniz Bandeira Duarte. 

The key idea of the pluralist virtual network paradigm is to executemultiple protocol stacks in parallel over a single physical router to satisfy thedifferent requirements of applications. This work proposes an efficient controlsystem for Service Level Agreements (SLAs) in the virtual network environments.The proposed system verifies the physical resource usage, retrieves real-timeprofiles of virtual routers, and guarantees the SLA requirements. The controlis based on nebulous logic and adequates the resource allocation according tothe system overload and to the profile of routers. The control logic punishes virtualnetworks that exceed the established SLA. The punishment depends on theexceeding value and on the system charge. Results obtained from a developedprototype show the efficiency of the proposed system under different conditionsand strategic policies.

http://www.lbd.dcc.ufmg.br/colecoes/sbrc/2011/0045.pdf

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