favorite16Furthermore, the diagnosis is focused on the physical network nodes and is not considering the logical resources (e.g. in  present a self-modeling approach based on templates.
favorite25The contribution of this paper is twofold: 1) definition of finer granularity templates that model the dependencies among SDN nodes (physical and logical) as well as smaller subcomponents inside them (e.g. 2) Specification and validation of a self-modeling approach that tracks changes on the network topology of the networked nodes and their corresponding VNFs at runtime.
favorite2This approach differs from the state of the art in the discovery of network and service dependencies at run-time and the building of the diagnosis model of any SDN infrastructure using our templates.
favorite0In this paper, we propose finer granular templates that do not only model network nodes but also their sub-components for a more detailed diagnosis suitable in the SDN and NFV context.
favorite28We center our main research question on bringing these autonomic principles to ensure the resiliency and robustness of centralized SDN outof-band architectures, where, besides OpenFlow switches, also other legacy equipment would take part of the data plane (e.g. II..
favorite1The Self-Healing mechanism receives the network alarms through its sensors to detect faults and runs this closed-loop to diagnose the root cause and applies the proper recovery strategy through the actuators.
favorite14We propose a generic self-healing approach that relies on a Bayesian Networks for the diagnosis block and we applied this algorithm to a centralized SDN infrastructure to prove its functioning in the presence of faults.
favorite8This paper provides SDN with fault management capabilities by using autonomic principles like self-healing mechanisms.
favorite3However, despite the vulnerabilities identified due that the intelligence is centralized on SDN, its research is more centered on forwarding traffic and reconfiguration issues, not considering to a great extent the fault management aspects of the control plane.
favorite3As SDN ensures the connectivity among the VNFs, acting as enabler for NFV, our Self-Healing framework can be used to manage the NFV architecture and its related vulnerabilities.
favorite8ONF (Open Networking Foundation) defines  SDN as a layered architecture composed of the data plane, the control plane, the application plane, as well as a transversal management plane whose implementation, inner blocks and functionalities are still fuzzy..
favorite0The Self-Healing architecture takes the shape of a control-loop mechanism composed of three blocks, namely, detection, diagnosis, and recovery, which receives information from the managed elements through sensors and acts upon them through the actuators.
favorite7In this paper, we analyze the vulnerabilities of SDN (Software-Defined Networks) and NFV (Network Function Virtualization) from a fault management perspective, while taking into account the autonomic principles.