Service Function Chaining in Next Generation Networks: State of the Art and Research Challenges

Medhat, Ahmed M.; Taleb, Tarik; Elmangoush, Asma; Carella, Giuseppe; Covaci, Stefan; Magedanz, Thomas

doi:10.1109/mcom.2016.1600219rp

Cited by 221 publications

(118 citation statements)

References 17 publications

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“…We categorized the existing solution into two parts, in which, at first, we address the SFC algorithms, [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] and then in the second part, we describe the solutions and handle the failures and faults in SDNs/NFVs. We categorized the existing solution into two parts, in which, at first, we address the SFC algorithms, [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] and then in the second part, we describe the solutions and handle the failures and faults in SDNs/NFVs.…”

Section: Related Workmentioning

confidence: 99%

“…An SFC taxonomy that considers architecture and performance dimensions as the basis for the subsequent state-of-the-art analysis was introduced in the work of Medhat et al 6 Bhamare et al 7 studied the problem of deploying SFCs over NFV architecture. An SFC taxonomy that considers architecture and performance dimensions as the basis for the subsequent state-of-the-art analysis was introduced in the work of Medhat et al 6 Bhamare et al 7 studied the problem of deploying SFCs over NFV architecture.…”

Section: Sfc Solutions In Sdns/nfvsmentioning

confidence: 99%

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Software defined service function chaining with failure consideration for fog computing

Tajiki

Shojafar

Akbari

et al. 2018

Concurrency and Computation

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Middleboxes have become a vital part of modern networks by providing services such as load balancing, optimization of network traffic, and content filtering. A sequence of middleboxes comprising a logical service is called a Service Function Chain (SFC). In this context, the main issues are to maintain an acceptable level of network path survivability and a fair allocation of the resource between different demands in the event of faults or failures. In this paper, we focus on the problems of traffic engineering, failure recovery, fault prevention, and SFC with reliability and energy consumption constraints in Software Defined Networks (SDN). These types of deployments use Fog computing as an emerging paradigm to manage the distributed small-size traffic flows passing through the SDN-enabled switches (possibly Fog Nodes). The main aim of this integration is to support service delivery in real-time failure recovery in an SFC context. First, we present an architecture for Failure Recovery called FRFP; this is a multi-tier structure in which the real-time traffic flows pass through SDN-enabled switches to jointly decrease the network side-effects of flow rerouting and energy consumption of the Fog Nodes. We then mathematically formulate an optimization problem called the Optimal Fast Failure Recovery algorithm (OFFR) and propose a near-optimal heuristic called Heuristic HFFR to solve the corresponding problem in polynomial time. In this way, the reliability of the selected paths are optimized, while the network congestion is minimized. KEYWORDS failure recovery, fog computing (FC), network function virtualization (NFV), resource reallocation, service function chaining (SFC), software defined network (SDN) 1 INTRODUCTION Network Function Virtualization (NFV) paradigm decouples network functions (NFs) from dedicated hardware equipment and provides more flexibility to the owner of an IT infrastructure. NFV consists in a set of different services running on generic hardware (eg, IDS, proxy, deep packet inspection, and firewall) that are chained using the so called Service Function Chaining (SFC) concept. This concept can be applied to industrial environments; in particular, NFV is used in industrial network design in order to reduce exposure to risks, reduce CAPEX/OPEX costs, and minimize future performance issues by basing the infrastructure upon commodity servers and switches. 1 NFV and SFCs offer a great flexibility in the chaining and placement of NFs. The European Telecommunications Standards Institute (ETSI) is driving the standardization of NFV. Software Defined Networking (SDN) complements NFV and is concerned with the decoupling of control plane functionality from packet forwarding devices, allowing a controller to flexibly configure the networking operations in the infrastructure. NFV and SDN require attention to avoid cascading threats as well ascontroller protections, especially for the software applications across the SDN switches that interoperate with the server virtualization and virtual machines (VMs). 2...

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Section: Related Workmentioning

confidence: 99%

Section: Sfc Solutions In Sdns/nfvsmentioning

confidence: 99%

Software defined service function chaining with failure consideration for fog computing

Tajiki

Shojafar

Akbari

et al. 2018

Concurrency and Computation

View full text Add to dashboard Cite

show abstract

“…In [21], Medhat et al explore the limitations of current service function chaining approaches in next generation networks in terms of architectural and conceptual research work by providing a brief analysis of each solution in the state of the art. This article also proposes some new research directions.…”

Section: Related Workmentioning

confidence: 99%

Verifying the configuration of virtualized network functions in software defined networks

Pelay¹,

Guillemin

Barais

2017

2017 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN)

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Abstract-The deployment of modular virtual network functions (VNFs) in software defined infrastructures (SDI) enables cloud and network providers to deploy integrated network services across different resource domains. It leads to a large interleaving between network configuration through software defined network controllers and VNF deployment within this network. Most of the configuration management tools and network orchestrators used to deploy VNF lack of an abstraction to express Assume-Guarantee contracts between the VNF and the SDN configuration. Consequently, VNF deployment can be inconsistent with network configurations. To tackle this challenge, in this paper, we present an approach to check the consistency between the VNF description described from a set of structural models and flow-chart models and a proposed deployment on a real SDN infrastructure with its own configuration manager. We illustrate our approach on virtualized Evolved Packet Core function.

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“…Although, benefits of faster roll-outs of network services exist, the lack of flexibility in network management and interoperability concerns result in slow and expensive changes to the network. Specialized security service functions are currently provided using highly specialized middleboxes resulting in unwieldy static chains of network/service appliances without specific consideration for end-point requirements [15]. Our proposed framework uses a combined SDN/NFV approach to address the above problems while deploying security service functions over an existing network.…”

Section: Related Workmentioning

confidence: 99%

ScienceSDS

Nadig

Ramamurthy

2017

Proceedings of the ACM International Workshop on Security in Software Defined Networks &Amp; Network Function Virtualization

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Experimental science workflows from projects such as Compact Muon Solenoid (CMS) [6] and Laser Interferometer Gravitational Wave Observatory (LIGO) [2] are characterized by data-intensive computational tasks over large datasets transferred over encrypted channels. The Science DMZ [7] approach to network design favors lossless packet forwarding through a separate isolated network over secure lossy forwarding through stateful packet processors (e.g. firewalls). We propose ScienceSDS, a novel software defined security framework for securely monitoring large-scale science datasets over a software defined networking and network functions virtualization (SDN/NFV) infrastructure.

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Service Function Chaining in Next Generation Networks: State of the Art and Research Challenges

Cited by 221 publications

References 17 publications

Software defined service function chaining with failure consideration for fog computing

Software defined service function chaining with failure consideration for fog computing

Verifying the configuration of virtualized network functions in software defined networks

ScienceSDS

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