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OpenFlow enabled networks split and separate the data and control planes of traditional networks. This design commodifies network switches and enables centralized control of the network. Control decisions are made by an OpenFlow controller, and locally cached by switches, as directed by controllers. This can significantly impact the forwarding delay incurred by packets in switches, because controllers...
In OF@TEIN (OpenFlow @ Trans-Eurasian Information Network) SDN-enabled distributed cloud testbed, the resource-level visibility is extremely critical to ensure high availability of Physical+Virtual resources and identifying key performance bottlenecks which can significantly degrade testbed operation. Among multiple visibility levels for resources, flows and services, resource-level visibility is...
In OpenFlow-based SDN environment, we have designed and implemented the middle-box and splitting functionalities for chunked video streaming over multiple concurrent paths and constructed a prototype system to evaluate these functionalities with various scenarios of splitting ratio. The multi-path chunked video streaming has been tested in the Open vSwitch (OVS)-enabled Mininet-emulated network testbed...
As the heterogeneity of end devices and their networked applications grows, networking challenges should be coped with new features to meet the various requirements of different application traffics. In this paper, based on the emerging SDN (Software-Defined Networking) paradigm, we introduce NetOpen networking services that attempt to support configurable networking with programmable networking switch...
Multimedia service composition provides a flexible way of building customized multimedia content production and delivery by composing distributed multimedia-oriented services dynamically to provide new functionalities. Previous researches have addressed various aspects of multimedia service composition such as composability, QoS-awareness, and load balancing. Most of them however have assumed that...
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