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IEEE International Conference on Communications (IEEE ICC)

作者： Hernandez-Chulde, Carlos Casellas, Ramon Martinez, Ricardo Vilalta, Ricard Munoz, Raul Ctr Tecnol Telecomunicac Catalunya CTTC CERCA Castelldefels Barcelona Spain

ISBN: (纸本)9781538674628

Orchestration of computing and network resources across multiple technology layers is critical for the autonomous roll-out of network services that fulfill the heterogeneous requirements of vertical industries. Therefore, effectively mapping the requirements of verticals into underlying infrastructure management decisions is a challenging issue. In this paper, we evaluate the provisioning of vertical-driven network services, composed of a set of interconnected virtual network functions, on top of a distributed cloud infrastructure interconnected through an Elastic Optical network (EON). To this end, we propose a solution exploiting the advantages of Deep Reinforcement Learning. This solution relies on two cooperating agents to execute an efficient selection of computing resources in the cloud infrastructure for the placement of virtualized network functions, as well as the routing and spectrum assignment in the EON. The performance of the proposed solution is evaluated in scenarios where arrival and departure of service requests are dynamic. Experimental results show the improved performance of the proposed solution with and without invalid action masking over a heuristic algorithm in terms of service blocking rate.

关键词： network function virtualization Elastic Optical networks Deep Reinforcement Learning

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RAVIN: A Resource-aware VNF Placement Scheme with Performance Guarantees 36

RAVIN: A Resource-aware VNF Placement Scheme with Performanc...

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36th IEEE/IFIP network Operations and Management Symposium, NOMS 2023

作者： Chintapalli, Venkatarami Reddy Giduturi, Vishal Siva Kumar Tamma, Bheemarjuna Reddy Antony Franklin, A. Indian Institute of Technology Hyderabad India

ISBN: (纸本)9781665477161

network functions virtualization (NFV) enables carriers to replace dedicated middleboxes with Virtual network functions (VNFs) consolidated on a few shared servers. However, the question of how (and even whether) one can achieve performance related Service Level Objectives (SLOs) with software packet processing in NFV remains open. VNF consolidation causes high variability and unpredictability in throughput and latency of VNFs deployed together. It was shown in our prior work that isolating the processor's Last Level Cache (LLC) and limiting Memory Bandwidth (MB) directly helps in achieving performance isolation among the co-located VNFs. So, in this work, we formulate VNF placement problem with exclusive allocation of LLC and MB resources as a Mixed Integer Linear Program (MILP). Due to its hardness to solve, we also present a heuristic solution named RAVIN that enforces performance SLOs for multi-tenant NFV servers while being as much resource-efficient as possible. We demonstrate RAVIN's effectiveness in improving resource utilization and in reducing the total number of required servers to deploy VNFs compared to state-of-the-art and baseline approaches. © 2023 IEEE.

关键词： network function virtualization

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Multicast Service Chaining Model Guaranteeing Reliability with Multiple Sources 24

Multicast Service Chaining Model Guaranteeing Reliability wi...

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IEEE 24th International Conference on High Performance Switching and Routing, (HPSR)

作者： Ozaki, Shintaro Sato, Takehiro Oki, Eiji Kyoto Univ Kyoto Japan

ISBN: (纸本)9781665476409

Service chaining provides network services to users by processing packets with a series of virtualized network functions (VNFs). This paper proposes a multi-source multicast service chaining model that guarantees the reliability of services with flexible routing and VNF placement. In order to obtain cost-efficient feasible solutions, we introduce an algorithm that iteratively solves an integer linear programming problem and an algorithm that conducts the VNF placement with a concept of the betweenness centrality. Numerical results show that the proposed model allocates the network and computation resources with the reduction in the total cost compared to the existing model.

关键词： network function virtualization service chaining multicast reliability optimization problem

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Off-site Service function Protection for Type-oriented Forwarder Failures

Off-site Service Function Protection for Type-oriented Forwa...

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IEEE International Conference on Communications (IEEE ICC)

作者： Peng, Chengzong Zheng, Danyang Wang, Ben Cao, Xiaojun Chengdu Univ Informat Technol Sch Cybersecur Chengdu Peoples R China Southwest Jiaotong Univ Chengdu Peoples R China Soochow Univ Sch Elect & Informat Engn Suzhou Jiangsu Peoples R China Georgia State Univ Dept Comp Sci Atlanta GA 30303 USA

ISBN: (纸本)9781538674628

In network function virtualization (NFV), service providers can accommodate services from clients by deploying software-based functions, called service functions (SFs), on commodity servers. The deployed SFs are connected to SF forwarders for efficient management in these commodity servers. Many efforts have been put into protecting SFs from failures. However, little attention has been paid to protecting SF forwarders from failures. In this paper, we investigate how to efficiently allocate backup computing resources when facing SF and SF forwarder failures. To protect the deployed SFs with the minimum backup computing resources, we define a new SF forwarder off-site shared protection problem and approve its NP-hardness. An efficient heuristic algorithm is proposed and proved to be logarithmic approximate. Extensive simulation results show that the proposed algorithm significantly outperforms the approaches directly extended from the existing work.

关键词： network function virtualization Backup resource allocation Service function Approximation algorithm

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Deployment of Multi-Service network Slices for Integrated Space and Ground networks 11

Deployment of Multi-Service Network Slices for Integrated Sp...

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11th International Conference on Information Technology - IoT and Smart City (ITIoTSC)

作者： Yang, Li Pan, Chengsheng Cheng, Ying'ao Dalian Univ Key Lab Commun & Networks Dalian 116622 Peoples R China Nanjing Univ Informat Sci & Technol Sch Elect & Informat Engn Nanjing 211800 Peoples R China Nanjing Univ Informat Sci & Technol Elect & Informat Engn Coll Nanjing 210044 Peoples R China Dalian Univ Coll Informat Engn Dalian 116622 Peoples R China

ISBN: (纸本)9798350328356;9798350328349

This paper presents a solution to the problem of managing and supporting mobile services with different quality of service requirements in a space-ground integrated network that has limited resources. To this end, we apply network slicing technology and present a reliable deployment algorithm for multi-service network slicing. Specifically, the network slice deployment problem is transformed into a mixed integer linear programming model, and virtual nodes are sorted and deployed using the breadth-first search algorithm based on their reliability index. Finally, virtual link deployment solutions are provided on demand for different types of network slices. Simulation experiments demonstrate that compared to traditional service function chain mapping algorithms, our proposed algorithm reduces deployment costs while increasing network resource utilization and reliability.

关键词： space-ground integrated network network slices service function chain deployment network function virtualization

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Pre-Overload Migration Scheme for NFV-based Fog Computing 21

Pre-Overload Migration Scheme for NFV-based Fog Computing

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21st ACM International Symposium on Mobility Management and Wireless Access (MobiWac)

作者： Jasim, Mohammed A. Siasi, Nazli Aldalbahi, Adel Univ Washington Tacoma Sch Engn & Technol Tacoma WA 98402 USA Depaul Univ Sch Comp Chicago IL 60604 USA King Faisal Univ Elect Engn Dept Al Hufuf Saudi Arabia

ISBN: (纸本)9798400703676

network function virtualization (NFV) -based fog computing paradigms support delay-sensitive applications with flexible deployment of virtual network functions (VNFs). However, the limited resources at the fog nodes result in overload at high traffic volumes, thus impacting capacity and quality of service. Hence, this paper proposes a pre-overload migration scheme that copies mapped VNFs from a host node to neighboring target nodes before a saturation event. Once the latter occurs, requests are rerouted to a backup path to resume service with minimal migration iterations and service downtime as compared to a reactive post-overload migration scheme.

关键词： Fog computing network function virtualization group mapping pre-overload migration post-overload migration

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Dependable Virtual network Services: An Architecture for Fault- and Intrusion-tolerant SFCs

Dependable Virtual Network Services: An Architecture for Fau...

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2024 IEEE Conference on network function virtualization and Software Defined networks, NFV-SDN 2024

作者： Venâncio, Giovanni Fulber-Garcia, Vinicius Flauzino, José Alchieri, Eduardo A.P. Duarte, Elias P. Federal University of Paraná UFPR Curitiba Brazil University of Brasília UnB Brasília Brazil

ISBN: (纸本)9798350380538

A virtual network service can be implemented as a Service function Chain (SFC) which is a composition of multiple Virtualized network functions (VNFs) forming the service topology. The IETF defines a standard architecture for SFCs, that includes traffic classification and forwarding elements. Considering that several network services implement functionalities that are critical for the correct operation of the network, the failure of an SFC can compromise the entire infrastructure, causing monetary losses or security issues. This work proposes the Fault-& Intrusion Tolerant SFC (FIT-SFC): an architecture to support secure and highly available virtual services. While most of previous related work only assumes crash faults, FIT-SFC uses replication strategies to also tolerate intrusions on any component of the SFC architecture, while still being fully compliant with the IETF reference model. A prototype was implemented and experimental results show that FIT-SFC presents acceptable overhead and fast failover, tolerating faults/intrusions on both stateless and stateful services. ©2024 IEEE.

关键词： network function virtualization

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A Survey on Optimizing Virtualized Service Management in Mobile Edge Cloud networks 2

A Survey on Optimizing Virtualized Service Management in Mob...

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2nd International Conference on Emerging Trends in Information Technology and Engineering, ic-ETITE 2024

作者： Abinaya, K. Dhanasekaran, S. Vasudevan, V. Department of Computer Science and Engineering Tamilnadu Srivilliputtur India

ISBN: (纸本)9798350328202

Mobile Edge Computing (MEC) and network function virtualization (NFV) have emerged as viable solutions for meeting the growing need in mobile networks for low-latency, high-bandwidth, and efficient data processing. MEC puts processing and storage capabilities much nearer to the networks edge, enabling mobile users to utilize low-latency and high- bandwidth services. Whereas, network function virtualization (NFV) allowing them to be put on general-purpose servers rather than dedicated hardware. However, due to the constant change of the environment and the different needs of mobile users, the management and efficient operation of virtualized services in MEC networks offers major hurdles. This literature review is intended to provide a complete overview of MEC and NFV research and progress. It then examines MEC's integration with NFV, highlighting the synergies and advantages it offers. Benefits of this integration include improved resource utilization, enhanced scalability, and flexibility in program configuration. Issues related to the deployment and management of MEC and NFV such as resource allocation, security and power consumption are also discussed. © 2024 IEEE.

关键词： network function virtualization

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Embedding Service function Chains with Dedicated Protection in Edge networks

Embedding Service Function Chains with Dedicated Protection ...

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IEEE International Conference on Communications (IEEE ICC)

作者： Zheng, Danyang Shen, Gangxiang Chen, Bowen Peng, Chengzong Cao, Xiaojun Mukherjee, Biswanath Southwest Jiaotong Univ Sch Comp & Artificial Intelligence Chengdu Sichuan Peoples R China Soochow Univ Sch Elect & Informat Engn Suzhou Jiangsu Peoples R China Chengdu Univ Informat Technol Sch Cybersecur Chengdu Sichuan Peoples R China Georgia State Univ Dept Comp Sci Atlanta GA 30303 USA

ISBN: (纸本)9781538674628

Emerging machine learning techniques enable Internet-connected devices to generate service function chain (SFC) requests for reliability-sensitive applications. To facilitate reliable SFC provisioning, prior works have proposed the SFC dedicated protection approach for fog and cloud networks, which generally have abundant resources and connectivity. However, with limited resources and connectivity, it might be inefficient to directly employ these approaches at the network edge. In this work, we study how to efficiently embed and provide dedicated protection when accommodating SFCs at the network edge. We formally define the problem of SFC embedding with dedicated protection (SFCE-DP) to minimize the bandwidth resources usage at the network edge. Based on the proposed technique of augmenting path in a layered graph, we construct an efficient algorithm, called augmenting-path-based SFC embedding with dedicated protection (AP-SDP), to optimize SFCE-DP. When the network resources are limited, our results show that AP-SDP significantly outperforms the benchmark that is directly extended from the state-of-the-art.

关键词： network function virtualization Service function chain embedding and protecting Dedicated protection

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SecRouting: Secure Routing for network functions virtualization (NFV) Technology

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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS 2022年第3期69卷 1727-1731页

作者： Xue, Peilei Jiang, Zhongyuan Xidian Univ Sch Cyber Engn Xian 710071 Shaanxi Peoples R China

The network functions virtualization (NFV) technology is a network architecture that virtualizes traditional network services into virtualized network functions (VNFs) which are dependent on the reliability and security of standard hardware appliances (HAs). The mapping relationship between VNFs and HAs is very complicated, and designing secure routing for the multi-layer NFV network to defend against attacks such as Sybil attack is challenging. In this work, we first designed the mapping patterns of VNFs and HAs in the NFV network. Secondly, we propose a security capacity formulation model which profoundly relies on the mapping patterns. Thirdly, a new multi-path secure routing referred to as SecRouting is suggested to navigate data packets to avoid the Sybil attackers. Finally, we systematically evaluate the security capacity and traffic capacity of the proposed SecRouting compared with many baselines.

关键词： Routing Security Hardware network function virtualization Reliability Software Circuits and systems SecRouting mapping patterns dependability sybil attack NFV

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