Balanced Service Chaining in Software-Defined Networks with Network Function Virtualization

摘要

Balanced Hash Tree (BHT) is a mechanism for service function (SF) chaining, service routing, and traffic steering that enables switches to select SF instances for load balancing without involving the controller. In an experimental evaluation, BHT decreased packet-in message-processing time by 92.5 percent and achieved near-perfect load-balancing performance.