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In this paper, we tackle the failure detection problem in OpenFlow networks. We have examined several commercial OpenFlow switches and found that the long failure detection time makes an OpenFlow network unable to realize fast failure recovery. To resolve this problem, we propose a software based failure detection and fault location identification scheme. Our design can be applied to both in-band...
In an OpenFlow network, the controller is responsible to control and manage the whole network. Although such central control paradigm is easier to achieve efficient network resources usage, the controller becomes the bottleneck when the network size is large. In this paper, we propose using pre-provisioned paths to mitigate the burden on a controller. The basic idea is to setup some background paths...
A flexible verification environment is introduced that is adaptive for the corresponding NoC architecture. We will describe the method using the Universal Verification Methodology (UVM) to create a reconfigurable and scalable platform to facilitate the early verification and validation of the NoC system.
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