Abstract
With the advance of Future Internet technologies, many research issues and ideas are growing fast in recent years. In the field of network virtualization, software defined network becomes a common topic on network research. In Taiwan, many institutes and laboratories of universities already built their bench-scale testbed for research and educational use with OpenFlow protocol. As time goes by, stitching experimental networks is a growing trend to fulfill requirements for large scale emulation. Hence, this paper revealed a progressing deployment which connects different experimental networks with centralized control policy. The objective is to build an integrated research network with a proposed solution which utilizes OpenFlow protocol to deal with the inter-connections. With a centralized controller and implemented architecture, the deployment not only solves the limitation of VLAN tag number in network but also improves the flexibility of configuration. This design could be a solution for the realistic constraints of network environment in Taiwan, and it also supports the possibility of stitching regional experimental networks for networking research.
Highlights
The Future Internet research has been carried for a period of time
With a centralized controller and implemented architecture, the deployment solves the limitation of VLAN tag number in network and improves the flexibility of configuration
As most research or experimental networks are supported by OpenFlow protocol, this paper proposes an OpenFlow solution based on VLAN translation in order to handle the problem of layer 2 inter-connection in Taiwan
Summary
The Future Internet research has been carried for a period of time. There are many researchers making efforts on constructing experimental testbeds. Inter-connection across different universities and their local Internet Service Providers (ISPs) in Taiwan utilize the layer 3 tunneling (Capsulator [4]) technique. This is sufficient for simple usage, this is not stable enough to sustain, not to mention the effectiveness of transmission is lowered down because of encapsulation/de-capsulation procedures. Migrating current architecture to an integrated layer 2 OpenFlow network on Taiwan Advanced Research and Education Network (TWAREN, [5]) is a desired solution for growing usage. A new issue occurred: transmission required single VLAN tag on all stitched layer 2 networks making it hard to accommodate traffic from geographically dispersed institutes.
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