Transfer‐based Datacenter Interconnection
A. Asensio, Marc Ruiz, Luis Velasco · 2017
This chapter explores application service orchestrator (ASO) as an intermediate layer between the cloud and the network. In this architecture, datacenter (DC) resource managers request data transferences using an application-oriented semantic. Transfer-based requests from different DC operators received by ASOs are routed and resource allocation scheduled to simultaneously fulfill their service level agreement (SLA), which becomes the routing and scheduled spectrum allocation (RSSA) problem. An integer linear programming (ILP) model is proposed, and a heuristic algorithm for solving the RSSA problem in realistic scenarios is designed. Results showing remarkable gains in the amount of data transported motivate its use for orchestrating DC interconnection. The chapter also explores ASO functionalities by using scheduling techniques in addition to elastic operations, with the twofold objective of fulfilling SLA contracts and increasing the network operator's revenues by accepting more connection requests.