SDN-OpenFlow Topology Discovery: An Overview of Performance Issues

Software-defined networking (SDN) is an innovative architecture that separates the control plane from data to simplify and speed up management of large networks. This means logic has been moved network hardware level centralized level. Therefore, use OpenFlow Discovery Protocol (OFDP) one most common protocols used discover topology in a then transmit it for management. However, OFDP various shortcomings its performance such as exchanging too many messages between both levels (control data), which turn increases load on SDN-Controller. Additionally, since application layer depends entirely topologies plotted plane, very important obtain accurate information plane. after providing background discovery reader, we will concentrate issues. The present study identifies discuss primary concerns involved complex query process, infrastructure, influencing factors, challenges process. Furthermore, this paper several recent studies have overcome enhanced these In addition, open discussion future work concerning issues are also discussed.