TY - GEN
T1 - Software Defined Network Dynamics via Diffusions
AU - Czachórski, Tadeusz
AU - Gelenbe, Erol
AU - Marek, Dariusz
N1 - Publisher Copyright:
© 2021, Springer Nature Switzerland AG.
PY - 2021
Y1 - 2021
N2 - Software-Defined Networks (SDN) dynamically modify the paths of Internet flows in response to the quality of service or security needs, and hence frequently modify traffic levels at network routers. Thus network routers often operate in the transient regime, rather than at steady-state, with significant impact on packet loss probabilities and delay. We, therefore, investigate the time-dependent performance of a small network of routers, modelled as G/G/1/N queueing stations. A diffusion approximation is developed to predict the quality of service of the routers in the transient regime. Numerical examples show that the results in the transient regime can differ very significantly from the steady-state results, and therefore that the transient analysis must be taken into account in evaluating the performance of routers in a SDN network.
AB - Software-Defined Networks (SDN) dynamically modify the paths of Internet flows in response to the quality of service or security needs, and hence frequently modify traffic levels at network routers. Thus network routers often operate in the transient regime, rather than at steady-state, with significant impact on packet loss probabilities and delay. We, therefore, investigate the time-dependent performance of a small network of routers, modelled as G/G/1/N queueing stations. A diffusion approximation is developed to predict the quality of service of the routers in the transient regime. Numerical examples show that the results in the transient regime can differ very significantly from the steady-state results, and therefore that the transient analysis must be taken into account in evaluating the performance of routers in a SDN network.
UR - https://www.scopus.com/pages/publications/85101816399
U2 - 10.1007/978-3-030-68110-4_2
DO - 10.1007/978-3-030-68110-4_2
M3 - Conference contribution
AN - SCOPUS:85101816399
SN - 9783030681098
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 29
EP - 47
BT - Modelling, Analysis, and Simulation of Computer and Telecommunication Systems - 28th International Symposium, MASCOTS 2020, Revised Selected Papers
A2 - Calzarossa, Maria Carla
A2 - Gelenbe, Erol
A2 - Grochla, Krysztof
A2 - Lent, Ricardo
A2 - Czachórski, Tadeusz
PB - Springer Science and Business Media Deutschland GmbH
T2 - 28th International Symposium on Modelling, Analysis, and Simulation of Computer and Telecommunication Systems, MASCOTS 2020
Y2 - 17 November 2020 through 19 November 2020
ER -