Ma J, Rankothge W, Makaya C, Morales M, Le F, Lobo J. An Overview of A Load Balancer Architecture for VNF chains Horizontal Scaling. 14th International Conference on Network and Service Management (CNSM)
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Ma J, Rankothge W, Makaya C, Morales M, Le F, Lobo J. An Overview of A Load Balancer Architecture for VNF chains Horizontal Scaling. 14th International Conference on Network and Service Management (CNSM)
Ma J, Rankothge W, Makaya C, Morales M, Le F, Lobo J. An Overview of A Load Balancer Architecture for VNF chains Horizontal Scaling. 14th International Conference on Network and Service Management (CNSM)
We present an architectural design and a reference implementation for horizontal scaling of virtual network function chains. Our solution does not require any changes to network functions and is able to handle stateful network functions for which states may depend on both directions of the traffic. We use connection-aware traffic load balancers based on hashing function to maintain mappings between connections and the dynamically changing network function chains. Our references implementation uses OpenFlow switches to route traffic to the assigned network function instances according to the load balancer decisions. We conducted extensive simulations to test the feasibility of the architecture and evaluate the performance of our implementation.