Congestion Control for Content-Centric Networking Based on Protocol-Oblivious Forwarding

The traditional TCP/IP network architecture has been already unable to meet the growing demand of content distribution. The combination of CCN (Content-Centric Networking) and SDN (Software-Defined Networking) has been gradually considered as the next network architecture. In face of the lack of end to end session in CCN, the design of a congestion control mechanism becomes very important. Based on the new SDN protocol—POF (Protocol-Oblivious Forwarding), we propose a congestion judgment strategy based on explicit feedback, with different values representing different network congestion situations. In addition, the data receivers and intermediate nodes will work together for congestion control. The proposed strategy is evaluated by experiments. The experiments results show that this scheme works well and can effectively control congestion in POF-CCN.