Another Price to Pay: An Availability Analysis for SDN Virtualization with Network Hypervisors (CROSBI ID 663708)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Dobrijević, Ognjen ; Natalino, Carlos ; Furdek, Marija ; Hodžić, Haris ; Džanko, Matija ; Wosinska, Lena
engleski
Another Price to Pay: An Availability Analysis for SDN Virtualization with Network Hypervisors
Communication networks are embracing the software defined networking (SDN) paradigm. Its architectural shift assumes that a remote SDN controller (SDNC) in the control plane is responsible for configuring the underlying devices of the forwarding plane. In order to support flexibility-motivated network slicing, SDN-based networks employ another entity in the control plane, a network hypervisor (NH). This paper first discusses different protection strategies for the control plane with NHs and presents the corresponding availability models, which assume possible failures of links and nodes in the forwarding plane and the control plane. An analysis of these protection alternatives is then performed so as to compare average control plane availability, average path length for the control communication that traverses NH, and infrastructure resources required to support them. Our results confirm the intuition that the NH introduction generally results in a reduction of the control plane availability, which stresses the need for appropriate protection. However, the availability achieved by each of the considered strategies is impacted differently by the node availability and the link failure probability, thus calling for a careful selection that is based on the infrastructure features.
Software defined networking (SDN) ; reliability ; SDN controller ; network hypervisor ; availability analysis
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
1-7.
2018.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of 2018 10th International Workshop on Resilient Networks Design and Modeling (RNDM)
Heegaard, Poul ; Helvik, Bjarne ; Rak, Jacek
Gdanjsk: Gdansk University of Technology
978-1-5386-7029-3
Podaci o skupu
10th International Workshop on Resilient Networks Design and Modeling (RNDM 2018)
predavanje
27.08.2018-29.08.2018
Longyearbyen, Norveška