A survey: Hybrid SDN

Sandhya, .; Sinha, Yash; Haribabu, K.

doi:10.1016/j.jnca.2017.10.003

Cited by 95 publications

(27 citation statements)

References 58 publications

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“…With the increase of the size of topology, the averaged lower bound of N s grows big. Many recent researches demonstrate that [24], [31]- [33], with 20%-30% SDN deployment rate, the hybrid SDN can gain comparable TE performance to that of full SDN, which ignores the TCAM resource limitation. However, for a large topology, considering the 750 maximum forwarding entries in flow table of TCAM-based SDN node in practical, TE performance of hybrid SDN comparable to that of SDN cannot be achieved with 20%-30% SDN deployment rate.…”

Section: B Simulations On Tcam Resource Requirementmentioning

confidence: 99%

Achieving Near-Optimal Traffic Engineering Using a Distributed Algorithm in Hybrid SDN

et al. 2020

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To empower advanced traffic engineering (TE) mechanism, while considering the infeasibility of one-step migration to software-defined networking (SDN), SDN nodes are incrementally deployed into legacy network, which gives rise to hybrid SDN. In hybrid SDN, redirecting flow of every source-destination pair through at least one SDN node, can enhance TE performance and obtain flow manageability, while on the other hand leading to increasing demands of TCAM resources in SDN nodes. In this paper, we make minimization of maximum link utilization as the TE objective, and comply with SDN waypoint enforcement and TCAM resource limitation. We first formulate the TE problem as an integer linear programming (ILP) model and solve it in a centralized manner, where SDN waypoint selection and splitting fractions for each flow are jointly determined. Then, based on a fact that the logically centralized control plane in hybrid SDN is composed of multiple physically decentralized controllers, each of which manages part of SDN nodes, as well as considering a real situation that a centralized solution is infeasible or too fragile for large-scale network, we develop a distributed algorithm deriving from Lagrangian decomposition theory to effectively solve the TE problem. The simulation results indicate that, when 30% of the SDN nodes are deployed, the proposed traffic engineering-aware distributed routing (TEDR) algorithm obtains maximum link utilization comparable to that of full SDN, and has a limited influence on the routing efficiency. INDEX TERMS Software-defined networking, hybrid SDN, traffic engineering, resource allocation, distributed algorithm.

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Section: B Simulations On Tcam Resource Requirementmentioning

confidence: 99%

Achieving Near-Optimal Traffic Engineering Using a Distributed Algorithm in Hybrid SDN

et al. 2020

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“…Similarly, preserving the IPv6 principles would also ensure further evolution towards softwarized domains [216]. This would also allow smooth mobility management in the ensuing hybrid SDN domains wherein SDN-based and non-SDN based domains would coexist [217], [218].…”

Section: ) Prospects Of Fmipv6 In 5g Mobility Environmentmentioning

confidence: 99%

A Comprehensive Review of Enhancements and Prospects of Fast Handovers for Mobile IPv6 Protocol

2019

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The emerging mobility management schemes for the fifth generation (5G) of mobile networks mostly follow the network-based protocol principles, which do not involve the mobile node (MN) in their operation. Such solutions have not been able to meet the ultra-low handover latency requirement in complex mobility scenarios in 5G. These objectives can be potentially achieved through increased involvement of MN in the handover operation, which can now be conveniently effectuated through virtualization technologies. In this regard, the classical host-based Fast Handovers for Mobile IPv6 (FMIPv6) protocol has the potential to offer several benefits due to its distinctive features, such as link-layer assistance for handover preparation, in-advance new care-of address formulation, and buffering services. Several enhancements to the FMIPv6 protocol have also been proposed, which improve its handover performance. Many of these enhancements focus on the baseline FMIPv6 specification, while others aim to enhance its operation by adding support features, such as mobile multicast, vertical handovers, quality of service assurance, as well as security support. Moreover, several enhancements to the access-technology-specific solutions for FMIPv6 have also been proposed. This paper aims to provide a systematic review of FMIPv6 enhancements in order to gain insight into its advantages as well as its shortcomings. Based on the review, this paper also discusses the evolution prospects of FMIPv6 toward 5G. Finally, some of its potential limitations along with possible research directions in the context of 5G are also indicated.

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“…However, there are also some studies that consider it not so convenient to make a complete migration, but gradual, from the traditional scheme of supervision, monitoring, control and optimization of conventional networks to SDN. Studies such as the one conducted by Sandhya, Sinha, & Haribabu [13], raises some reasons for a gradual transition to SDN. Among these reasons, because the hybrid environment allows SDN and legacy equipment or nodes to coexist, which facilitates the development of an incremental implementation strategy.…”

Section: Fig 1 Sdn Architecturementioning

confidence: 99%

Optimization of a WiFi Wireless Network that Maximizes the Level of Satisfaction of Users and Allows the Use of New Technological Trends in Higher Education Institutions

Hernandez¹,

Balmaceda

Hernández

et al. 2019

Lecture Notes in Computer Science

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The campus wireless networks have many users, who have different roles and network requirements, ranging from the use of educational platforms, informative consultations, emails, among others. Currently due to the inefficient use of network resources and little wireless planning, caused by the growth of the technological infrastructure (which is often due to daily worries, rather than to a lack of preparation by those in charge of managing the network), There are two essential factors that truncate the requirement of having a stable and robust network platform. First, the degradation of the quality of services perceived by users, and second, the congestion caused by the high demand for convergent traffic (video, voice, and data). Both factors imply great challenges on the part of the administrators of the network, which in many occasions are overwhelmed by permanent incidences of instability, coverage, and congestion, as well as the difficulty of maintaining it economically. The present investigation seeks to propose a process of optimization of the infrastructure and parameters of the configuration of a wireless network, that allows maximizing the level of satisfaction of the users in Higher Education Institutions. In the first place, it is expected to determine an adequate methodology to estimate the level of satisfaction of the users (defining a mathematical criterion or algorithm based on the study variables [1], characterize the environment in which the project will be developed, making a complete study of the wireless conditions and implement optimization strategies with software-defined networks (SDN). SDN is a concept in computer networks that allows network management to be carried out efficiently and flexibly, separating the control plane from the data plane into network devices. SDN architecture consists of an infrastructure layer which is a collection of network devices connected to the SDN Controller using protocol (OpenFlow) as a protocol [2]. Also, SDN will study traffic patterns on the network as a basis for optimizing network device usage [3]. The phases of the research will be carried out following the life cycle defined by the Cisco PPDIOO methodology (Prepare, Plan, Design, Implement, Operate, Optimize) [4].

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A survey: Hybrid SDN

Cited by 95 publications

References 58 publications

Achieving Near-Optimal Traffic Engineering Using a Distributed Algorithm in Hybrid SDN

Achieving Near-Optimal Traffic Engineering Using a Distributed Algorithm in Hybrid SDN

A Comprehensive Review of Enhancements and Prospects of Fast Handovers for Mobile IPv6 Protocol

Optimization of a WiFi Wireless Network that Maximizes the Level of Satisfaction of Users and Allows the Use of New Technological Trends in Higher Education Institutions

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