Optical network configuration methods considering end-to-end latency in data centers

In recent years, data centers have been required to manage ever-increasing amounts of data resulting from the explosive growth of data-intensive Internet services. Data centers must provide high performance while minimizing energy consumption. To achieve these objectives, optical network technology can be implemented in data center networks. Optical networks in large-scale data centers must be configured to transmit large amounts of data with minimal latency. In this paper, we propose data center network configurations that are designed to reduce end-to-end latency. We configure two data center optical networks by splitting switches into groups and subgroups. Full mesh networks are used to connect groups and subgroups, and to implement connections within subgroups. Based on evaluations conducted using simulations, the proposed networks show high performance against Torus networks, and show low configuration costs against FatTree networks.