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Understanding OPNFV

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Understanding OPNFV 121 Next, workflows specify how a series of actions occur, which can get complex when considering various dependencies. Finally, TOSCA also allows for policies that trigger workflows based on events. The TOSCA-NFV simple profile specification covers an NFV-specific data model using the TOSCA language. ● YANG: YANG is a modeling language standardized by IETF. Unlike TOSCA or UML, YANG is a network-centric modeling language. YANG models the state data and configurations of network elements. YANG describes a tree of nodes and relationships between them. OPNFV is considering all three approaches, and in some cases hybrid approaches with multiple modeling languages, to solve the VNF onboarding problem. Given the importance of this issue, there is also considerable collaboration with outside organizations and projects such as ETSI, TMForum, OASIS, ON.Lab, and so on. Clearwater vIMS on OPNFV Clearwater is a virtual IP multimedia system (vIMS) software VNF project, open-sourced by Metaswitch. It is a complex cloud native application with a number of interconnected virtual instances. Clearwater vIMS

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