Towards a P4-based Dynamic In-Band SDN Control Channel

For the decentralization and virtualization of computing resources, Software Defined Networking (SDN), which enables flexible and dynamic control of packet forwarding and processing, is an essential technology. To connect one or more controllers with a number of distributed switches in SDN, an in-band control channel is of importance. However, the traditional static schemes such as L2VLAN are insufficient for a reliable and efficient SDN control plane especially in unreliable wireless networks. Therefore, our final goal is to develop a framework for dynamic inband control channels in which the control messages can piggyback on data packets. As the first step, we report a feasibility study of the in-band control channel using Programming Protocol Independent Packet Processors (P4) [1], which can be implemented flexibly and vendor-independently for packet processing functions of switches.2022年電子情報通信学会総合大会, 2022年3月15日-18日, オンライン開