1. Anand Krishnamurthy, Shoban P. Chandrabose and Aaron Gember-Jackobson 1 Pratyaastha: An Efficient Elastic Distributed SDN Control Plane

2. SDN Control Plane Operator goals: 1.Better Performance – Minimizing flow setup latency 2.Lower Operating Cost – Efficient controller resource allocation 2 SummaryEvaluationArchitecture Motivation

3. Challenges faced by operators SummaryEvaluationArchitecture Motivation

4. Challenges faced by operators 4 Controllers Overload or Inefficient Resource Utilization Increases flow setup latency State Storage and Access Static switch assignment SummaryEvaluationArchitecture Motivation Load shifts

5. Pratyaastha - Architecture SummaryEvaluation Architecture Motivation Joint optimization of Inter-controller communication and Resource consumption

6. Pratyaastha - Architecture Application state SummaryEvaluation Architecture Motivation AS1AS2AS3AS4 Flow arrival rate VM configurations Controller assignment algorithm AI – Hill Climbing with simulated annealing

7. Pratyaastha - Architecture Application state SummaryEvaluation Architecture Motivation AS1AS2AS3AS4 Flow arrival rate VM configurations Controller assignment algorithm AI – Hill Climbing with simulated annealing Scaling and Migration P1P2P3P4

8. Evaluation 8 Topology and traffic from a private datacenter 33% and 42% decrease in cost when compared with ‘Local CPU + Mem’ and ‘CPU only’ respectively 44% decrease in flow-setup latency Summary Evaluation ArchitectureMotivation

9. Summary Novel assignment of application state partitions and switches to controller instances Minimizes flow setup latency Minimizes controller operating costs 9 Praytaastha: An Efficient Elastic Distributed SDN Control Plane Summary EvaluationArchitectureMotivation