Keyflow: a prototype for evolving SDN toward core network fabrics

Martinello, Magnos; Ribeiro, Moisés R. N.; Oliveira, R.E.; Vitoi, Romulo de Angelis

doi:10.1109/mnet.2014.6786608

Cited by 58 publications

(43 citation statements)

References 9 publications

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“…Some of these efforts include new architectures for a smooth migration from the current mobile core infrastructure to SDN [222], and techno-economic models for virtualization of these networks [549], [550]; carrier-grade OpenFlow virtualization schemes [551], [112], including virtualized broadband access infrastructures [552], techniques that are allowing the offer of network-as-a-service [553]; programmable GE-PON and DWDM ROADM [157], [158], [159], [160]; largescale inter-autonomous systems (ASs) SDN-enabled deployments [554]; flexible control of network resources [555], including offering MPLS services using an SDN approach [556]; and the investigation of novel network architectures, from proposals to separate the network edge from the core [557], [558], with the latter forming the fabric that transports packets as defined by an intelligent edge, to software-defined Internet exchange points [559], [526].…”

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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“…An approach recently introduced based on using residue number system, which can replace the table lookup by some RNS operations. The KeyFlow [15] method can reduce round trip time (RTT) more than 50 % as it is indicated by simulation results. In order to use this method, an RNS moduli should be assigned to each switch as its ID.…”

Section: Rns In Sdn Core Fabricsmentioning

confidence: 90%

RNS Applications in Computer Networks

Zarandi

2017

Embedded Systems Design With Special Arithmetic and Number Systems

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Residue number system (RNS) is a non-weighted number system, which represents any integer number with some residues, based on the selected moduli set. Therefore, computations can be done on these residues in parallel to decrease the delay, and also due to the reduction of bit-length, low power processors can be designed. Moreover, another characteristic of this number system is its ability to improve the reliability by using redundant moduli. These are the most famous advantages of RNS, which numerous works have been done on them, and they led to valuable achievements [1]. However, recently modern applications of RNS have been introduced which profit from RNS in new aspects with distinct goals and also new challenges [2]. RNS can be used in network applications with the aim of solving some issues such as determining output port in simpler way [3] or increasing a wireless sensor network (WSN) lifetime [4]. Moreover, it is possible to design a switch which can process multicast or unicast traffic by using RNS concepts [3,5]. Redundant residue number system is even used in cloud storage with the aim of providing a novel method to enhance reliability [6]. Another application of RNS in WSN is its usage in increasing the reliability of data transmission by improving packet reception rate and end-to-end delay [7]. Furthermore, RNS can be applied to WSN in order to perform data aggregation [8] which results in a good trade-off between energy consumption and reliability.This chapter briefly reviews some of the important and effective applications of RNS in computer networks to show how RNS can improve performance in different ways than conventional methods. In other words, our aim is creating a

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“…However, the wildcard entries space that supports flow aggregation is usually rather limited, even in flexible software implementations (e.g., 100 entries reference the Stanford implementation). Recently, [13] and [14] have proposed that core networks can benefit from independent evolution between switching fabric and edge nodes in SDN. In other words, the way of a switch fabric to provide raw forwarding capacity to interconnect the edge nodes can be beneficial for the speed and cost.…”

Section: Introductionmentioning

confidence: 99%

A SDN Network Based on VLANs for Data Centers

Xu¹,

Xu²

2016

Proceedings of the 2016 International Conference on Engineering Science and Management

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Abstract-The demands for the scalable and efficient network at data centers are becoming more and more intense recently. However, there are three problems needed to be solved, i.e., the ever-increasing number of actual or virtual machines demands, effectively managing these different machines and maintaining the effectiveness. This paper proposes a new software defined network (SDN) based on VLANs and its significant characteristic is to build a scalable layer 2/3 network for data centers based on the physical OpenFlow switches. Our framework has high performances because: 1) The operation of encapsulating and unpacking packets is not necessary; 2) Routing paths can be precomputed.

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Keyflow: a prototype for evolving SDN toward core network fabrics

Cited by 58 publications

References 9 publications

Software-Defined Networking: A Comprehensive Survey

Software-Defined Networking: A Comprehensive Survey

RNS Applications in Computer Networks

A SDN Network Based on VLANs for Data Centers

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