Virtual Network Functions as a Service (VNFaaS) is currently under attentive study by telecommunications and cloud stakeholders as a promising business and technical direction consisting of providing network functions as a service on a cloud (NFV Infrastructure), instead of delivering standalone network appliances, in order to provide higher scalability and reduce maintenance costs. However, the functioning of such NFVI hosting the VNFs is fundamental for all the services and applications running on top of it, forcing to guarantee a high availability level against attacks and software failures. Indeed the availability of an VNFaaS relies on the failure rate of its single components, namely the servers, the virtualization software, and the communication network. The proper assignment of the virtual machines implementing network functions to NFVI servers and their protection from both endogenous and exogenous threats is essential to guarantee high availability. We model the High Availability Virtual Network Function Placement (HA- VNFP) as the problem of finding the best assignment of virtual machines to servers guaranteeing protection by replication. We propose a probabilistic approach to measure the real availability of a system and design both efficient and effective algorithms that can be used by stakeholders for both online and offline planning.
Securing virtual network function placement with high availability guarantees / M. Casazza, P. Fouilhoux, M. Bouet, S. Secci - In: 2017 IFIP Networking Conference (IFIP Networking) and Workshops[s.l] : IEEE, 2018. - ISBN 9783901882944. - pp. 1-9 (( convegno IFIP Networking Conference (IFIP Networking) tenutosi a Stockholm nel 2017.
|Titolo:||Securing virtual network function placement with high availability guarantees|
CASAZZA, MARCO (Primo) (Corresponding)
|Parole Chiave:||Computer Networks and Communications|
|Settore Scientifico Disciplinare:||Settore INF/01 - Informatica|
Settore MAT/09 - Ricerca Operativa
|Data di pubblicazione:||2018|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.23919/IFIPNetworking.2017.8264850|
|Tipologia:||Book Part (author)|
|Appare nelle tipologie:||03 - Contributo in volume|
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