LI Ting-qing, LIU Feng-qing. Optimizing Routing Algorithm of Virtual Optical Networks based on SDN[J]. 2018,(3):1-4. DOI: 10.13756/j.gtxyj.2018.03.001.
Considering the shortage of low bandwidth utilization and congestion of data transmission in traditional optical networks
we construct a Software Defined Network(SDN)-based virtual optical network that comprises of a packet network and an optical network
and propose a multi-path routing algorithm that optimizes the bandwidth allocation.Under the capacity constraints of the transmission link
we calculate the maximum load of each link and optimize the bandwidth allocation in multipath routing.With the help of ONOS and Mininet simulation tools
we verify that our algorithm can effectively reduce the delay of data transmission and avoid network congestion.