SDN-Based Service Function Chaining Framework for Kubernetes Cluster Using OvS
Amirhossein Ghorab, Marc St‐Hilaire · 2022
The ongoing demand for deploying Virtual Network Functions (VNFs) in cloud environments is driving the motivation to also deploy and enable Service Function Chaining (SFC). However, deploying SFC in a cloud environment includes multiple subproblems such as implementing an SFC-compatible infrastructure, routing design, placement, and scaling. We believe the deployment of SFC-compatible infrastructures and the routing design issues need further attention as they are fundamental constituents of SFC-enabled cloud environments. In this paper, we present a new flexible SFC framework using a multi-nodes Kubernetes cluster, a Software-Defined Networking (SDN) controller, and an OpenFlow-enabled virtual switch known as Open vSwitch (OvS) to deploy and steer the user traffic to a distributed SFC. We demonstrate the correctness of the proposed SFC framework by monitoring the OvS flow table on Kubernetes worker nodes.