| As the economic globalization is escalating and the information technology is developing at a high pace, Internet service has formed an important part of modern society and is transforming into a major driving force of the world economy and social development. As a fundamental piece of information infrastructure, data centers are at the core of the cloud services, providing information storage and information processing capabilities. However, the performance of a data center may be largely affected by its internal network’s capability. Therefore, currently there are extensive research activities focusing on the optical switching architecture for the data center network (DCN).By adopting optical switching and networking technologies we can expect that data center networks can meet their greedy requirements on high scalability, high capacity, ultra-fast switching speed, low latency and high energy-efficiency. OpenScale, which is proposed by the author’s research group previously, is a data center optical switching network architecture that exploits both optical wavelength switching and fine-grained optical burst witching with the merit of arbitrary scalability. In this thesis, we discuss several operation principles of OpenScale architecture, including the addressing and routing schemes and dynamic bandwidth allocation schemes, etc. An OPNET based network simulator is also introduced to evaluate the performance of our proposals. Simulation results show that:the OpenScale network simulation platform can run as expected; with the increasing traffic load, the whole network bandwidth utilization increases, the whole network packet loss rate increases; with the static shortest routing strategy, the nodes whose location is nearer to the core of the whole OpenScale network have more forward traffic, the nodes whose location is nearer to the periphery of the OpenScale network have less forward traffic; forward traffic has an important impact on the whole network packet loss. |
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