TY - GEN
T1 - Characterization of failure dynamics in SDN controllers
AU - Vizarreta, Petra
AU - Heegaard, Poul
AU - Helvik, Bjarne
AU - Kellerer, Wolfgang
AU - Machuca, Carmen Mas
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/10/31
Y1 - 2017/10/31
N2 - With Software Defined Networking (SDN) the control plane logic of forwarding devices, switches and routers, is extracted and moved to an entity called SDN controller, which acts as a broker between the network applications and physical network infrastructure. Failures of the SDN controller inhibit the network ability to respond to new application requests and react to events coming from the physical network. Despite of the huge impact that a controller has on the network performance as a whole, a comprehensive study on its failure dynamics is still missing in the state of the art literature. The goal of this paper is to analyse, model and evaluate the impact that different controller failure modes have on its availability. A model in the formalism of Stochastic Activity Networks (SAN) is proposed and applied to a case study of a hypothetical controller based on commercial controller implementations. In case study we show how the proposed model can be used to estimate the controller steady state availability, quantify the impact of different failure modes on controller outages, as well as the effects of software ageing, and impact of software reliability growth on the transient behaviour.
AB - With Software Defined Networking (SDN) the control plane logic of forwarding devices, switches and routers, is extracted and moved to an entity called SDN controller, which acts as a broker between the network applications and physical network infrastructure. Failures of the SDN controller inhibit the network ability to respond to new application requests and react to events coming from the physical network. Despite of the huge impact that a controller has on the network performance as a whole, a comprehensive study on its failure dynamics is still missing in the state of the art literature. The goal of this paper is to analyse, model and evaluate the impact that different controller failure modes have on its availability. A model in the formalism of Stochastic Activity Networks (SAN) is proposed and applied to a case study of a hypothetical controller based on commercial controller implementations. In case study we show how the proposed model can be used to estimate the controller steady state availability, quantify the impact of different failure modes on controller outages, as well as the effects of software ageing, and impact of software reliability growth on the transient behaviour.
UR - http://www.scopus.com/inward/record.url?scp=85040526156&partnerID=8YFLogxK
U2 - 10.1109/RNDM.2017.8093037
DO - 10.1109/RNDM.2017.8093037
M3 - Conference contribution
AN - SCOPUS:85040526156
T3 - Proceedings of 2017 9th International Workshop on Resilient Networks Design and Modeling, RNDM 2017
BT - Proceedings of 2017 9th International Workshop on Resilient Networks Design and Modeling, RNDM 2017
A2 - Calle, Eusebi
A2 - Marzo, Jose
A2 - Rak, Jacek
A2 - Pareta, Josep Sole
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th International Workshop on Resilient Networks Design and Modeling, RNDM 2017
Y2 - 4 September 2017 through 6 September 2017
ER -