Shengru Li

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Over the past decade, the fast development of the Internet has pushed the scales of end users, network devices and applications to grow exponentially. That made the Internet architecture become more and more complicated, which impedes the introduction of new protocols and slows down the support of new services. In response to these issues, software-defined(More)
It has already been con rmed that software-de ned networking (SDN) can make the networks more programmable, adaptive and application aware. However, due to the large-scale and geographically-distributed nature of wide-area networks (WAN), the scalability could become a critical issue if we incorporate SDN for WANs (i.e., realizing SD-WANs). In this paper,(More)
We propose and experimentally demonstrate a control-plane framework to realize online spectrum defragmentation (DF) in software-defined elastic optical networks. Experimental results show that the spectrum DF enabled by OpenFlow reduces the blocking probability effectively. 1. Introduction It is well known that by using a flexible grid, elastic optical(More)
In this paper, we study the service provisioning schemes for dynamic advance reservation (AR) multicast requests in elastic optical networks (EONs). We first propose several algorithms that can handle the service scheduling and routing and spectrum assignment (RSA) of AR multicast requests jointly, including an integrated two-dimensional fragmentation-aware(More)
Software-defined networking separates the control and forwarding planes of a network to make it more programmable and application- aware. As one of the initial implementations of SDN, OpenFlow abstracts a forwarding device as a flow table and realizes flow processing by applying the "match-and-act" principle. However, the protocol-dependent nature of(More)
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