User-Specific Network Service Functions in an SDN-enabled Network Node

Cerrato, Ivano; Jungel, Tobias; Palesandro, Alex; Risso, Fulvio; Suñé, Marc; Woesner, Hagen

doi:10.1109/ewsdn.2014.26

Cited by 14 publications

(5 citation statements)

References 2 publications

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“…AT&T is another telecom company that is investing heavily in new services, such as user-defined network clouds, that take advantage of recent developments in NFV and SDN [537]. As we mentioned before, SDN and NFV are complementary technologies that can be applicable to different types of networks, from local networks and data centers to transport networks [538], [539], [540], [541], [542], [543]. Recently, several research initiatives have worked towards combining SDN and NFV through Intel's DPDK, a set of libraries and drivers that facilitates the development of network-intensive applications and allows the implementation of fine-grained network functions [544].…”

Section: H Meeting Carrier-grade and Cloud Requirementsmentioning

confidence: 99%

Software-Defined Networking: A Comprehensive Survey

et al. 2015

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Abstract-The Internet has led to the creation of a digital society, where (almost) everything is connected and is accessible from anywhere. However, despite their widespread adoption, traditional IP networks are complex and very hard to manage. It is both difficult to configure the network according to predefined policies, and to reconfigure it to respond to faults, load and changes. To make matters even more difficult, current networks are also vertically integrated: the control and data planes are bundled together. Software-Defined Networking (SDN) is an emerging paradigm that promises to change this state of affairs, by breaking vertical integration, separating the network's control logic from the underlying routers and switches, promoting (logical) centralization of network control, and introducing the ability to program the network. The separation of concerns introduced between the definition of network policies, their implementation in switching hardware, and the forwarding of traffic, is key to the desired flexibility: by breaking the network control problem into tractable pieces, SDN makes it easier to create and introduce new abstractions in networking, simplifying network management and facilitating network evolution.In this paper we present a comprehensive survey on SDN. We start by introducing the motivation for SDN, explain its main concepts and how it differs from traditional networking, its roots, and the standardization activities regarding this novel paradigm. Next, we present the key building blocks of an SDN infrastructure using a bottom-up, layered approach. We provide an in-depth analysis of the hardware infrastructure, southbound and northbound APIs, network virtualization layers, network operating systems (SDN controllers), network programming languages, and network applications. We also look at cross-layer problems such as debugging and troubleshooting. In an effort to anticipate the future evolution of this new paradigm, we discuss the main ongoing research efforts and challenges of SDN. In particular, we address the design of switches and control platforms -with a focus on aspects such as resiliency, scalability, performance, security and dependability -as well as new opportunities for carrier transport networks and cloud providers. Last but not least, we analyze the position of SDN as a key enabler of a software-defined environment.

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Section: H Meeting Carrier-grade and Cloud Requirementsmentioning

confidence: 99%

Software-Defined Networking: A Comprehensive Survey

et al. 2015

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“…As proposed in this work, in their simulations, authors adopt the Abilene topology and distinguish between switches connected to services and simple forwarding switches, while the experimental testbed is quite limited since composed of 4 middleboxes and 4 OpenFlow switches. [55] presents a prototype of an SDN-enabled node that, given a new user device connected to one of its physical ports, is able to dynamically instantiate the user-specific forwarding graph by forcing the user data to traverse the required set of network functions over a user-specific path set-up across instances of programmable OpenFlow switches (i.e., Logical Switch Instances). Upon the arrival of a new network function forwarding graph, an LSI is activated on-the-fly to steer traffic among the required VNFs deployed either as DPDK processes or in docker containers, in contrast with our approach where VNFs are already deployed in the emulated cloud platforms.…”

Section: Sdn-based Service Chainingmentioning

confidence: 99%

Intent-based zero-touch service chaining layer for software-defined edge cloud networks

2022

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“…Virtual switches such as OpenvSwitch (OVS) [21] and the eXtensible Datapath daemon (xDPd) [22] are used to implement network function chains (as shown respectively in [23,24]), although they appear in some way orthogonal to our proposal. In fact, they implement the classification and forwarding mechanism (either based on the traditional L2 forwarding or on the more powerful Openflow protocol [25]), but do not focus on the data exchange mechanism, which is often based on bi-directional FIFO queues (in some case a shared memory can be configured).…”

Section: Related Workmentioning

confidence: 99%

An efficient data exchange mechanism for chained network functions

Cerrato

Marchetto

Risso

et al. 2018

Journal of Parallel and Distributed Computing

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Thanks to the increasing success of virtualization technologies and processing capabilities of computing devices, the deployment of virtual network functions is evolving towards a unified approach aiming at concentrating a huge amount of such functions within a limited number of commodity servers. To keep pace with this trend, a key issue to address is the definition of a secure and efficient way to move data between the different virtualized environments hosting the functions and a centralized component that builds the function chains within a single server. This paper proposes an efficient algorithm that realizes this vision and that, by exploiting the peculiarities of this application domain, is more efficient than classical solutions. The algorithm that manages the data exchanges is validated by performing a formal verification of its main safety and security properties, and an extensive functional and performance evaluation is presented.

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User-Specific Network Service Functions in an SDN-enabled Network Node

Cited by 14 publications

References 2 publications

Software-Defined Networking: A Comprehensive Survey

Software-Defined Networking: A Comprehensive Survey

Intent-based zero-touch service chaining layer for software-defined edge cloud networks

An efficient data exchange mechanism for chained network functions

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