NFV orchestrator placement for geo-distributed systems

Abu-Lebdeh, Mohammad; Naboulsi, Diala; Glitho, Roch; Tchouati, Constant Wette

doi:10.1109/nca.2017.8171391

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…The authors propose an ILP to solve the optimization problem with optimality guarantees, a genetic algorithm, and a fast greedy algorithm. In [20] the authors consider the problem of allocating the minimum quantity of resources to perform the VNF placement in a two-level hierarchical geo-distributed infrastructure, proposing both an ILP and a Tabu Search heuristic algorithm. In [21] the usage of both computing and communication resources are balanced into a bi-objective optimization problem, which is proved to be NP-hard.…”

Section: Related Workmentioning

confidence: 99%

Availability-driven NFV orchestration

2019

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Virtual Network Functions as a Service (VNFaaS) is a promising business whose technical directions consist of providing network functions as a Service instead of delivering standalone network appliances, leveraging a virtualized environment named NFV Infrastructure (NFVI) to provide higher scalability and reduce maintenance costs. Operating the NFVI under stringent availability guarantees is fundamental to ensure the proper functioning of the VNFaaS against software attacks and failures, as well as common physical device failures. Indeed the availability of a VNFaaS relies on the failure rate of its single components, namely the physical servers, the hypervisor, the VNF software, and the communication network.In this paper, we propose a versatile orchestration model able to integrate an elastic VNF protection strategy with the goal to maximize the availability of an NFVI system serving multiple VNF demands. The elasticity derives from (i) the ability to use VNF protection only if needed, or (ii) to pass from dedicated protection scheme to shared VNF protection scheme when needed for a subset of the VNFs, (iii) to integrate traffic split and load-balancing as well as mastership role election in the orchestration decision, (iv) to adjust the placement of VNF masters and slaves based on the availability of the different system and network components involved. We propose a VNF orchestration algorithm based on Variable Neighboring Search, able to integrate both protection schemes in a scalable way and capable to scale, while outperforming standard online policies.

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Section: Related Workmentioning

confidence: 99%

Availability-driven NFV orchestration

2019

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“…Indeed, it allows the easy adaptation of network services to changes in traffic pattern or operator requirements benefiting from the elastic nature of virtualised resources. The importance of orchestration for future networks brought attention from researchers that tackled specific orchestration aspects, such as dependability [5], security [6] [7], multi-tenancy [8], and orchestrator geo-placement [9].…”

Section: Related Workmentioning

confidence: 99%

Orchestrating an SFC-enabled SSL/TLS traffic processing architecture using MANO

Sousa

Cunha

Carvalho

et al. 2018

2018 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN)

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The heterogeneity of 5G requirements commands more complex network architectures, imposing the need for network orchestration. ETSI NFV MANO is the standard which defines a common framework for vendors and operators to integrate their orchestration efforts. In this paper, we evaluated how an ETSI NFV MANO compliant orchestrator (OSM) fares while orchestrating an SFC-enabled SSL/TLS encrypted traffic processing architecture, which supports both edge and cloud deployments. A quantitative evaluation was carried-out, which assessed the responsiveness and overheads of OSM, as well as the actual functionality of our SSL/TLS processing architecture (with edge computing components). A qualitative evaluation was also carried-out, providing insight into the maturity of the current OSM release, what works well, what requires workarounds, and the actual limitations. A demonstration of the architecture evaluated in this work was accepted as a contribution to the ETSI OSM PoC Framework.

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“…Several authors proposed different optimization models and heuristic solutions for managing the VNF placement problem [9][10][11][12][13]. In this paper, we address such a problem by providing a novel integer linear programming (ILP) optimization model and a novel heuristic method to provide more scalable solutions in a viable time.…”

Section: Introductionmentioning

confidence: 99%

A Novel Strategy for VNF Placement in Edge Computing Environments

et al. 2022

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Network function virtualization (NFV) is a novel technology that virtualizes computing, network, and storage resources to decouple the network functions from the underlying hardware, thus allowing the software implementation of such functions to run on commodity hardware. By doing this, NFV provides the necessary flexibility to enable agile, cost-effective, and on-demand service delivery models combined with automated management. Different management and orchestration challenges arise in such virtualized and distributed environments. A major challenge in the selection of the most suitable edge nodes is that of deploying virtual network functions (VNFs) to meet requests from multiple users. This article addresses the VNF placement problem by providing a novel integer linear programming (ILP) optimization model and a novel VNF placement algorithm. In our definition, the multi-objective optimization problem aims to (i) minimize the energy consumption in the edge nodes; (ii) minimize the total latency; and (iii) reducing the total cost of the infrastructure. Our new solution formulates the VNF placement problem by taking these three objectives into account simultaneously. In addition, the novel VNF placement algorithm leverages VNF sharing, which reuses VNF instances already placed to potentially reduce computational resource usage. Such a feature is still little explored in the community. Through simulation, numerical results show that our approach can perform better than other approaches found in the literature regarding resource consumption and the number of SFC requests met.

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NFV orchestrator placement for geo-distributed systems

Cited by 5 publications

References 8 publications

Availability-driven NFV orchestration

Availability-driven NFV orchestration

Orchestrating an SFC-enabled SSL/TLS traffic processing architecture using MANO

A Novel Strategy for VNF Placement in Edge Computing Environments

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