earticle

영어

With the rapid development of Internet technology, more flexible applications appeared and had a higher demand on dynamic allocation of network resources. However, allocating network resources dynamically is difficult to achieve in current TCP/IP networks due to the lack of programming interface of network devices for unified and effective control and management. In recent years, a new network architecture -- software-defined networks (SDN) emerged and it provides services providers or network managers an opportunity to realize the goals. In this paper, a user-reservation-based end-to-end dynamic bandwidth allocation procedure in SDN with OpenFlow protocol is proposed. Users can reserve bandwidth and controller can allocation bandwidth dynamically to satisfy users’ demand. Experiments are designed to verify the effectiveness of the allocation procedure. Results of the experiment show that the allocation procedure works well.