A Design of Service Function Chaining with VNF and CNF on Cloud Native Environment

For providing network services in cloud, virtual machine is used refer to the NFV Reference Architecture. After that, with the development of container technology, ETSI is also updating their existing NFV Reference Architecture in consideration of CNF. However, in the actual operating environment, the mixture of VNF and CNF will continue for a long time. Network services arc provided by making a chain between VNFs and CNFs. In the past, to provide network services, each cloud system was used to deploy VNFs and CNFs, and special network is needed to connect each other. Additionally, even if the same network service is provided in the container environment, the network function that handle traffic according to the type of service are slightly different. In this paper, we propose service function chaining on one cloud system that manage VNF and CNF with network functions that arc selected by classifier based on the service classification result of the traffic.