Network hose: Managing uncertain network demand with model simplicity
Jun 15, 2021Satyajeet Singh Ahuja, Petr Lapukhov, Varun Gupta, Vinayak Dangui, Abishek Gopalan, Soshant Bali, Mikel Jimenez Fernandez, Grace Smith

Summary
Introduced the 'network hose' planning model to manage uncertain network demand. This model shifts from forecasting pairwise traffic matrices between data centers to forecasting aggregate ingress and egress traffic per data center, reducing forecast complexity by an order of magnitude. To address the continuous demand sets within the hose constraint, a method was developed to identify critical reference demand sets by analyzing network cuts and data center locations, focusing on simple cuts that are likely to drive resource needs. This simplifies network design and operational workflows.