RT info:eu-repo/semantics/article T1 GA3: scalable, distributed address assignment for dynamic data center networks A1 Rojas Sánchez, Elisa A1 Álvarez Horcajo, Joaquín A1 Martinez Yelmo, Isaias A1 Arco Rodríguez, José Manuel A1 Carral Pelayo, Juan Antonio K1 Data centers K1 Automatic address assignment K1 Misconfiguration detection K1 Shortest path bridges K1 Informática K1 Computer science AB Deployment and maintenance of current data center networks is costly and prone to errors. In order to avoid manual configuration, many of them require centralized administrators which constitute a clear bottleneck, while distributed approaches do not guarantee sufficient flexibility or robustness. This paper describes and evaluates GA3 (Generalized Automatic Address Assignment), a discovery protocol that assigns multiple unique labels to all the switches in a hierarchical network, without any modification of hosts or the standard Ethernet frames. Labeling is distributed and uses probes. These labels can be leveraged for shortest path routing without tables, as in the case of the Torii protocol, but GA3 also allows other label-based routing protocols (such as PortLand or ALIAS). Additionally, GA3 can detect miswirings in the network. Furthermore, control traffic is only necessary upon network deployment rather than periodically. Simulation results showed a reduced convergence time of less than 2 s and 100 kB/s of bandwidth (to send the GA3 frames) in the worst case for popular data center topologies, which outperforms other similar protocols. PB Springer SN 0003-4347 YR 2017 FD 2017-02-20 LK http://hdl.handle.net/10017/56372 UL http://hdl.handle.net/10017/56372 LA eng NO Comunidad de Madrid DS MINDS@UW RD 30-abr-2024