Robust Online Composition, Routing and NF Placement for NFV-Enabled Services

Network function virtualization (NFV) fosters innovation in the networking field and reduces the complexity involved in managing modern-day conventional networks. Via NFV, the provisioning of a network service becomes more agile, whereby virtual network functions can be instantiated on commodity ser...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications Vol. 38; no. 6; pp. 1089 - 1101
Main Authors: Alhussein, Omar, Zhuang, Weihua
Format: Journal Article
Language:English
Published: New York IEEE 01.06.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
Approximation algorithms
competitive analysis
Composition
Data centers
Heuristic algorithms
Multicast
NFV
Noise measurement
online algorithms
Placement
primal-dual scheme
profit maximization
Provisioning
Quality of service
Routing
Substrates
Unicast
Virtual networks
ISSN:0733-8716, 1558-0008
Online Access:Get full text
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Summary:Network function virtualization (NFV) fosters innovation in the networking field and reduces the complexity involved in managing modern-day conventional networks. Via NFV, the provisioning of a network service becomes more agile, whereby virtual network functions can be instantiated on commodity servers and data centers on demand. Network functions can be either mandatory or best-effort. The former type is strictly necessary for the correctness of a network service, whereas the latter is preferrable yet not necessary. In this paper, we study the online provisioning of NFV-enabled network services. We consider both unicast and multicast NFV-enabled services with multiple mandatory and best-effort NF instances. We propose a primal-dual based online approximation algorithm that allocates both processing and transmission resources to maximize a profit function, subject to resource constraints on physical links and NFV nodes. The online algorithm resembles a joint admission mechanism and an online composition, routing and NF placement framework. The online algorithm is derived from an offline formulation through a primal-dual based analysis. Such analysis offers direct insights and a fundamental understanding on the nature of the profit-maximization problem for NFV-enabled services with multiple resource types.
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ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2020.2986612