DATA CENTER NETWORKS
DCN ARCHITECTURE
It is becoming more desired to design a high through, low latency and low power DCN from architectural perspective. Frist, we studied the power efficient architecture for electrical switches for greening DCNs, which explored the power saving opportunities holistically from function level, node elvel and network level. In addition, we addressed the problems for optical DCNs. By removing MEMS from the design, we presented a new architecture outperforming previous optical DCNs by up to 4 times.
Kai Chen, Xitao Wen; Xingyu Ma, Yan Chen, Yong Xia, Chengchen Hu, Qunfeng Dong, Yongqiang Liu, Toward A Scalable, Fault-Tolerant, High-Performance Optical Data Center Architecture, in IEEE/ACM Transactions on Networking, vol. 25, no. 4, pp. 2281-2294, Aug. 2017.
Kai Chen, Xitao Wen, Xingyu Ma, Yan Chen, Yong Xia, Chengchen Hu, Qunfeng Dong, Yongqiang Liu, WaveCube: A Scalable, Fault-Tolerant, High-Performance Optical Data Center Architecture, in the proceedings of INFOCOM 2015， Hong Kong，Apr. 26- May 1, 2015
Jindou Fan, Chengchen Hu, Keqiang He, Junchen Jiang, Bin Liu, “Reducing Power of Traffic Manager in Routers via Dynamic On/Off-chip Scheduling“, IEEE INFOCOM 2012, Mar.25-30, Orlando, Florida, 2012
Wei Meng, Yi Wang, Chengchen Hu, Keqiang He, Jun Li, Bin Liu, Greening the Internet Using Multi-frequency Scaling Scheme. AINA 2012: 928-935
Chengchen Hu, Chunming Wu, Wei Xiong, Binqiang Wang, Jiangxin Wu, Min Jiang, On the Design of Green Reconfigurable Router towards Energy Efficient Internet, IEEE Communications Magazine, Vol.49(6),pp. 83-87 2011.
DCN TRAFFIC MANAGEMENT
We investigated traffic management leveraging the DCNs features introduced by their unique architecture and applications. For example, to solve the long-lived congestion in DCN caused by over-subscription and unbalanced workload, we explored the opportunity to address the continuous congestion via optimizing Virtual Machine (VM) placement, or/and routing over diverse DCN paths or/and rate limiters at senders.
Keqiang He, Weite Qin, Qiwei Zhang, Wenfei Wu, Junjie Yang, Tian Pan, Chengchen Hu, Jiao Zhang, Brent Stephens, Aditya Akella and Ying Zhang. Low Latency Software Rate Limiters for Cloud Networks, In Proceedings of APNet’17, Hong Kong, China, August 2017.
Che Zhang, Hong Xu, Libin Liu, Zhixiong Niu, Peng Wang, Yongqiang Tian, Chengchen Hu, Kuijia: Traffic rescaling in data center WANs. Sarnoff Symposium 2016
Kun Qian，Chengchen Hu，Multi-Constrained Multi-Path Routing for Server-Centric Data Center Networks, ICOC 2014, Shanghai, China, 2014 ( best paper award)
Xitao Wen, Kai Chen, Yan Chen, Yongqiang Liu, Yong Xiang, Chengchen Hu, VirtualKnotter: Online Virtual Machine Shuffling for Congestion Resolving in Virtualized Datacenter, IEEE ICDCS 2012, Jun. 18-21, Macau, 2012
Kai Chen, Chengchen Hu, Xin Zhang, Kai Zheng, Yan Chen, Athanasios Vasilakos, Survey on Routing in Data Centers: Insights and Future Directions, IEEE Network, Vol. 25, No. 4., pp. 6-10. 2011.
AUTOMATIC DCN OPERATION
The operations on a large-scale data center have been more and more complicated and error-prone. We were seeking automatic configuration and diagnosis method with the presence of malfunctioning switches.
Yanghua Peng, Ji Yang, Chuan Wu, Chuangxiong Guo, Chengchen Hu, Zongpeng Li, deTector: a Topology-aware Monitoring System for Data CenterNetworks, in the Proceeding of USENIX ATC 2017, SANTA CLARA, USA, July 12-14, 2017
Che Zhang, Hong Xu, Chengchen Hu, Performance impact inference with failures in data center networks. ICCC 2016: 1-6
Xingyu Ma, Chengchen Hu, Kai Chen, Che Zhang, Hongtao Zhang, Kai Zheng, Yan Chen and Xianda Sun, Error Tolerant Address Configuration for Data Center Networks with Malfunctioning Devices, IEEE ICDCS 2012, Jun. 18-21, Macau, 2012
Chengchen Hu, Mu Yang, Kai Zheng, Kai Chen, Xin Zhang, Bin Liu, Xiaohong Guan, Automatically Configuring the Network Layer of Data Centers for Cloud Computing, IBM Journal of Research and Development, Vol. 5, No. 6, pp. 3:1 – 3:10, 2011.
