Toward a telco cloud environment for service functions

Soares, Janine; Goncalves, Carlos; Parreira, Bruno; Tavares, Paulo; Carapinha, Jorge; Barraca, João Paulo; Aguiar, Rui L.; Sargento, Susana

doi:10.1109/mcom.2015.7045397

Cited by 87 publications

(42 citation statements)

References 6 publications

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“…VNFs for service chaining are placed on servers in carrier clouds [31]. In the future, carrier clouds will be composed of multiple data centers and their interconnections.…”

Section: Modeling the Vnf Placement Problemmentioning

confidence: 99%

Evolutionary core-periphery structure and its application to network function virtualization

Otokura

Leibnitz

Shimokawa

et al. 2016

NOLTA

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Biological networks, such as that of the human brain, show a remarkable ability to adapt to changing environments by long-term evolution and short-term adaptations. This is facilitated by the core-periphery structure of the network, where a core of densely connected network nodes provides long-term functionality and robustness, while the periphery is responsible for adaptation on short time scales to changing conditions in the environment. In this paper, we discuss the characteristics of the core-periphery network structure and its relation with adaptability and evolvability, which we also illustrate with own experimental data from the brain's functional network. Based on this concept, we propose a mechanism for the adaptive placement of network functions to virtual servers in network function virtualization (NFV) under time-varying user requests. Our simulation results show that the number of server manipulations (migrations, merges, and replications of virtual machines) necessary to accommodate changes in network function requests can be greatly reduced compared to the conventional placement method.

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“…VNFs for service chaining are placed on servers in carrier clouds [31]. In the future, carrier clouds will be composed of multiple data centers and their interconnections.…”

Section: Modeling the Vnf Placement Problemmentioning

confidence: 99%

Evolutionary core-periphery structure and its application to network function virtualization

Otokura

Leibnitz

Shimokawa

et al. 2016

NOLTA

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“…To build the vHGW we are following the steps laid by previous efforts within Instituto de Telecomunicações, from the specification of the environment [7], passing by an extension to OpenStack which brings the capability to establish GRE tunnels that connect the pHGW to the cloud environment, up to a SFC extension made for OpenStack Icehouse (in conjunction with the SDN controller OpenDaylight Hydrogen).…”

Section: Building the Virtual Home Gatewaymentioning

confidence: 99%

Policy-driven vCPE through dynamic network service function chaining

Cunha

Cardoso

Barraca

et al. 2016

2016 IEEE NetSoft Conference and Workshops (NetSoft)

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Abstract-Virtual CPEs address the low agility, slow time-tomarket and high costs (of development, deployment and support) that are inheritable to traditional CPEs. They take advantage of the economics of Cloud Computing and the ability to run Virtual Network Functions in a general computing platform to build richer services, with faster development and deployment times, all whilst reducing costs. When coupled together with Service Function Chaining and the ability to build/enter chains dynamically, an opportunity arises to enhance this system by making the whole vCPE's functionality policy-driven. We will start by constructing the vCPE within an OpenSource cloud platform (OpenStack), which will have dynamic SFC capablities added through own extensions. Then we will make the traffic classification through a DPI (ntop's nDPI), which will mark flows according to a configurable policy (REST interface) that will determine which service chain that flow must follow. Some virtual functions within a chain may trigger events (such as reaching the traffic quota for a certain service), being the policy immediately enforced at the VNFs and an "on-the-fly" policy change possible through the REST interface (for instance, change the throttle amount to a given application traffic). A live Proof-of-Concept was made which allowed real devices to connect to the vCPE.

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“…In a related effort, Cloud4NFV [130], [131] has proposed an end-to-end management platform for VNFs, which is based on the ETSI architectural specification. Clayman et al [132] describe an architecture based on an orchestrator that ensures the automatic placement of the virtual nodes and the allocation of network services on them supported by a monitoring system that collects and reports on the behaviour of the resources.…”

Section: A Management and Orchestrationmentioning

confidence: 99%

“…Yet, ICN may be used in NFV to determine the best position to place network functions. For example, Arumaithurai et al [198] propose a function-centric service chaining (FCSC) approach [111], [114], [115], [121] Vendor specific products for different components or specifications of the ETSI MANO framework Projects [85], [86], [88], [91], [92], [130], [131] Implementation and/or proposals based on the ETSI MANO framework…”

Section: G Research Directions In Selected Nfv Use Casesmentioning

confidence: 99%

Algorithms for advance bandwidth reservation in media production networks

Barshan

Moens

Famaey

et al. 2015

2015 IFIP/IEEE International Symposium on Integrated Network Management (IM)

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Abstract-Network Function Virtualization (NFV) has drawn significant attention from both industry and academia as an important shift in telecommunication service provisioning. By decoupling Network Functions (NFs) from the physical devices on which they run, NFV has the potential to lead to significant reductions in Operating Expenses (OPEX) and Capital Expenses (CAPEX) and facilitate the deployment of new services with increased agility and faster time-to-value. The NFV paradigm is still in its infancy and there is a large spectrum of opportunities for the research community to develop new architectures, systems and applications, and to evaluate alternatives and trade-offs in developing technologies for its successful deployment. In this paper, after discussing NFV and its relationship with complementary fields of Software Defined Networking (SDN) and cloud computing, we survey the state-of-the-art in NFV, and identify promising research directions in this area. We also overview key NFV projects, standardization efforts, early implementations, use cases and commercial products.

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Toward a telco cloud environment for service functions

Cited by 87 publications

References 6 publications

Evolutionary core-periphery structure and its application to network function virtualization

Evolutionary core-periphery structure and its application to network function virtualization

Policy-driven vCPE through dynamic network service function chaining

Algorithms for advance bandwidth reservation in media production networks

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