SDN features are making it more popular day by day: centralized monitoring, control of network equipments, increased performance and flexibility in designing network policies as per organization requirements. The SDN controller deals with data & control plane separately. The SDN switches are simply data forwarding devices and controller decides control over forwarding data through them. Controller has a technique to identify the network switch and router nodes; but it does not identify the presence of hosts before they generated network traffic and is not able to create the packet forwarding rules, security policies. The objective of this paper is to detect connected host before they generate any traffic and store host details at controller level for future researches in area of development of new network tools, applications, optimizations techniques and security. Here, we propose Instant Detection of Host in SDN (IDH-SDN) to detect host before transmission of any data packet and store host details in a HostTable at controller level. In our experiment, various network topologies have been used to test host detection and data collection algorithm and results of all experiments verified with Wireshark network packet analyzer. The HostTable data may be used for various purposes such as development of new network tools, policies, security approaches in OpenFlow network.
Instant Detection of Host in SDN (IDH-SDN)