Faculty Candidate Seminar

Software Defined Transport

Chi-Yao Hong

Research Assistant
University of Illinois, Urbana-Champaign
Monday, March 10, 2014
4:00pm - 5:00pm
1690 Beyster

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About the Event

Cloud network infrastructures, such as datacenter and inter-datacenter networks, are increasingly expected to provide vital support for cloud applications such as online services, big data processing, large graph/matrix computation, and distributed storage. The large variety of cloud applications have demanded a diverse range of network service requirements such as minimizing flow completion times, optimizing network utilization, meeting latency targets, and satisfying fairness constraints across tenants. However, network architectures used today are far from optimal for meeting these requirements. This mismatch hurts customer experience and ultimately leads to a loss of revenue for cloud service providers. In this talk, we argue for a programmable network abstraction --- A software defined transport (SDT) architecture for optimizing cloud network infrastructure. By providing a centralized programmable platform to define network transport mechanisms in software, network operators can easily schedule network resources to optimize for service requirements in real time. However, explicit network resource scheduling at the central controller would raise a serious latency and scalability concern. To solve this issue, we proposed resource allocation algorithms that can scale SDT to many of today's cloud network infrastructures. Further, centralized network resource allocation can cause severe, transient congestion because network devices may apply changes at different times. We develop a novel technique that leverages a small amount of scratch capacity on links to apply changes in a provably congestion-free manner.


Chi-Yao Hong is a Ph.D. candidate in the Department of Computer Science at the University of Illinois at Urbana-Champaign, co-advised by Matthew Caesar and Brighten Godfrey. Before joining UIUC, he received his Master's degree from the Department of Computer Science and Information Engineering, National Taiwan University. His research interest spans all aspects of networking, including network resource scheduling, network measurement and security. He is particularly interested in designing cloud network infrastructures to improve performance of data centers and clouds. He is a recipient of the Symantec Research Labs Graduate Fellowship (2012), the Best Paper Award from Passive and Active Measurement Conference (2011), and the Master’s Thesis Award from ACM Taipei/Taiwan Chapter (2008).

Additional Information

Sponsor(s): CSE

Open to: Public