Dynamic Load Balancing with Multipath Routing in Software Defined Networking

Abstract

Traditional Ethernet networks were limited to routing
schemes. A single best path was used by the Spanning Tree
Protocol (STP). This was a major cause for the limitation in the
throughput and the increased network latency. Multipath routing
scheme is one of the solutions where multiple paths available
in the network are used for traffic forwarding. If the load is
being forwarded to the multiple paths, load balancing finds its
application to balance the load among different paths. In this
paper, a multipath routing scheme is proposed along with the
load balancing among the available multiple paths in Software
Defined Networking (SDN) environment. SDN is an emerging
networking paradigm where control plane is separated from the
data plane. Mininet is used as the network simulation tool along
with the Ryu controller to support network programmability
feature on the control plane.