POSTER: Opportunistic Credit-Based Transport for Reconfigurable Data Center Networks with Tidal

The slowdown of Moore's Law for merchant silicon has motivated the adoption of optical circuit switches (OCSes) in data center networks (DCNs). As illustrated in Fig. 1, reconfigurable data center networks (RDCNs) have thus been developed to dynamically allocate high-bandwidth circuits between Top-of-Rack switches (ToRs) through OCSes 5, 6, 8, 17, 18. Thanks to the increasing reconfiguration speed of OCSes, modern RDCNs offer both high throughput for bulk traffic "elephant" flows and low latency for latency-sensitive "mice" flows with rapid circuit reconfigurations 3, 9, 13, 14, 16.