Cutting the Cord: a Robust Wireless Facilities Network for Data Centers
Proceedings of the ACM Conference on Mobile Computing and
Yibo Zhu, Xia Zhou, Zengbin Zhang, Lin Zhou, Amin Vahdat, Ben Y. Zhao, Haitao Zheng
Today’s network control and management traffic are limited by their reliance on
existing data networks. Fate sharing in this context is highly undesirable, since
control traffic has very different availability and traffic delivery requirements.
In this paper, we explore the feasibility of building a dedicated wireless
facilities network for data centers. We propose Angora, a low-latency facilities
network using low-cost, 60GHz beamforming radios that provides robust paths
decoupled from the wired network, and flexibility to adapt to workloads and network
dynamics. We describe our solutions to address challenges in link coordination,
link interference and network failures. Our testbed measurements and simulation
results show that Angora enables large number of low-latency control paths to run
concurrently, while providing low latency end-to-end message delivery with high
tolerance for radio and rack failures.