Virtual Private LAN Service (VPLS) is a widely used network technology which connects geographically distributed customer sites as a local area network. However, the process of provisioning a new VPLS circuit is complicated because service provider has to check device configurations one by one. Therefore, it is difficult to provide the service on demand. OpenFlow, the most notable protocol in Software Defined Networking (SDN), manage the network devices via a well-defined set of instructions and exposes the handling capability of flows to a centralized controller. By this logically centralized programmatic model, we have a consistent and convenient way to dynamically allocate an end-to-end path for a VPLS service. In this paper, we present a system L2OVX which leverages OpenVirteX, a network virtualization platform, to realize the VPLS service on-demand in SDN. This solution provides layer 2 translation to achieve virtualization process with line-rate performance, and enables the load balance function to improve the transfer bandwidth among tenants. The result of evaluation shows L2OVX is competitive with OpenVirteX according to the TCP throughput on softwarebased OpenFlow switches and moreover, supports most hardware OpenFlow-enabled switches to provide the line-rate throughput. Furthermore, for scalability, the number of flow entries for one tenant remains constant in L2OVX while grows exponentially in OpenVirteX.
Recently, the Future Internet technology becomes a popular research topic. To solve the problems caused in traditional network, most researchers propose various new network architectures. One of the famous architectures is Software-defined network (SDN), which can help users develop their own strategies freely without the limited functions on physical machines provided by specific venders. One of the famous software that realizes the concepts of SDN is OpenFlow. It is very important to manage and maintain an OpenFlow network since many organizations apply OpenFlow in their data centers (for example, Google). However, current version of OpenFlow does not support Inter-domain technology. In other words, from the GUI, users cannot know the actual positions of other hosts and OpenFlow switches in another domains. When performing SLA, it is inconvenient for management and maintenance since managers cannot know correct routing paths. Therefore, this paper will enhance our previous work of Inter-domain network topology and flow display system and Floodlight to study and implement host information demonstration.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.