A replication component for resilient OpenFlow-based networking

Fonseca, Paulo; Bennesby, Ricardo; Mota, Edjair; Passito, Alexandre

doi:10.1109/noms.2012.6212011

Cited by 140 publications

(81 citation statements)

References 15 publications

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“…For a resilient SDN design, the primary-backup idea has been applied to the controller placement problem in recent literatures. In [45], the core component CPRecovery is designed to support communication between the primary and backup controllers.…”

Section: Centralized Networking Managementmentioning

confidence: 99%

Dynamic virtual network restoration with optimal standby virtual router selection

Medhi

2016

NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium

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Network virtualization technologies allow service providers to request partitioned, QoS guaranteed and fault-tolerant virtual networks provisioned by the substrate network provider (i.e., physical infrastructure provider). A virtualized networking environment (VNE) has common features such as partition, flexibility, etc., but fault-tolerance requires additional efforts to provide survivability against failures on either virtual networks or the substrate network.Two common survivability paradigms are protection (proactive) and restoration (reactive). In the protection scheme, the substrate network provider (SNP) allocates redundant resources (e.g., nodes, paths, bandwidths, etc) to protect against potential failures in the VNE. In the restoration scheme, the SNP dynamically allocates resources to restore the networks, and it usually occurs after the failure is detected.iii In this dissertation, we design a restoration scheme that can be dynamically implemented in a centralized manner by an SNP to achieve survivability against node failures in the VNE. The proposed restoration scheme is designed to be integrated with a protection scheme, where the SNP allocates spare virtual routers (VRs) as standbys for the virtual networks (VN) and they are ready to serve in the restoration scheme after a node failure has been identified. These standby virtual routers (S-VR) are reserved as a sharedbackup for any single node failure, and during the restoration procedure, one of the S-VR will be selected to replace the failed VR. In this work, we present an optimal S-VR selection approach to simultaneously restore multiple VNs affected by failed VRs, where these VRs may be affected by failures within themselves or at their substrate host (i.e., power outage, hardware failures, maintenance, etc.). Furthermore, the restoration scheme is embedded into a dynamic reconfiguration scheme (DRS), so that the affected VNs can be dynamically restored by a centralized virtual network manager (VNM).We first introduce a dynamic reconfiguration scheme (DRS) against node failures in a VNE, and then present an experimental study by implementing this DRS over a realistic VNE using GpENI testbed. For this experimental study, we ran the DRS to restore one VN with a single-VR failure, and the results showed that with a proper S-VR selection, the performance of the affected VN could be well restored. Next, we proposed an Mixed-Integer Linear Programming (MILP) model with dual-goals to optimally select S-VRs to restore all VNs affected by VR failures while load balancing. We also present a iv heuristic algorithm based on the model. By considering a number of factors, we present numerical studies to show how the optimal selection is affected. The results show that the proposed heuristic's performance is close to the optimization model when there were sufficient standby virtual routers for each virtual network and the substrate nodes have the capability to support multiple standby virtual routers to be in service simultaneously.Finally, we presen...

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Section: Centralized Networking Managementmentioning

confidence: 99%

Dynamic virtual network restoration with optimal standby virtual router selection

Medhi

2016

NOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium

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“…SDN can help to address these issues because its architecture can accommodate the control of complex 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 network functions. For example, the control plane can be used to orchestrate the behavior of active and redundant devices, eliminating the need for new devices to perform such tasks [41].…”

Section: Fault Tolerance and Survivabilitymentioning

confidence: 99%

“…This is an application plane solution, and can be updated according to the need of new resilience requirements. Furthermore, Fonseca et al [41] investigate the redundancy of network controllers. Related to this is the work by Tootoonchian et al [42], which deals with the distribution of controller state over the network, in order to offer a logically centralized network controller.…”

Section: Fault Tolerance and Survivabilitymentioning

confidence: 99%

Resilience support in software-defined networking: A survey

et al. 2015

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Software-Defined Networking (SDN) is an architecture for computer networking that provides a clear separation between network control functions and forwarding operations. The abstractions supported by this architecture are intended to simplify the implementation of several tasks that are critical to network operation, such as routing and network management. Computer networks have an increasingly important societal role, requiring them to be resilient to a range of challenges. Previously, research into network resilience has focused on the mitigation of several types of challenges, such as natural disasters and attacks. Capitalising on its benefits, including increased programmability and a clearer separation of concerns, significant attention has recently focused on the development of resilience mechanisms that use software-defined networking approaches. In this article, we present a survey that provides a structured overview of the resilience support that currently exists in this important area. We categorize the most recent research on this topic with respect to a number of resilience disciplines. Additionally, we discuss the lessons learned from this investigation, highlight the main challenges faced by SDNs moving forward, and outline the research trends in terms of solutions to mitigate these challenges . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 This article presents a survey on the support for network resilience in SoftwareDefined Networking (SDN). This has been the subject of intense investigation by the academic and industrial community in the past few years, as evidenced by the number of papers included in our survey (159 references in total). Capitalizing on the benefits of SDN, including increased programmability and a clearer separation of concerns, significant attention has recently focused on the development of resilience mechanisms that use software-defined networking approaches. Thus, a wide range of solutions to classical network problems have been revisited using this architecture, but many problems continue to be challenging.Our survey investigates the resilience support that currently exists in this important area, and categorizes the most recent research on this topic with respect to a number of resilience disciplines. Additionally, we discuss the lessons learned from this investigation, highlight the main challenges faced by SDNs moving forward, and outline the research trends in terms of solutions to mitigate these challenges. The aim of the survey is to offer to the reader a structured view of network resilience in the SDN spectrum, and how resilience aspects are supported in these architectures.We believe that this subject material is closely aligned with the objectives of the journal. Please be assured that:1. This paper has not been published or accepted for publication w...

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“…Nevertheless, some interesting work combines SDN-like control for OpenFlow equipment or Ethernet (e.g. Dynamic flow routing) with traditional management for legacy equipment [9].…”

Section: Nfv Management and Orchestrationmentioning

confidence: 99%

Softwarized 5G Networks Resiliency with Self-Healing

Sánchez

Yahia

Crespi

et al. 2014

Proceedings of the 1st International Conference on 5G for Ubiquitous Connectivity

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Abstract-The meaning of 5G is still a subject of discussion in the industry. However, the softwarization of networks is expected to shape the design, operation and management of 5G networks. The opportunity is then crucial for Telcos, vendors and IT players to consider the management of 5G networks during its design time and avoid the "build it first, manage it later" paradigm. However, network softwarization comes with its own set of challenges, including robustness, scalability and resilience. In this paper, we analyze the vulnerabilities of SDN (Software-Defined Networks) and NFV (Network Function Virtualization) from a fault management perspective, while taking into account the autonomic principles. In particular, we focus on resiliency and we propose a Self-Healing based framework for 5G networks to ensure services and resources availability.

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A replication component for resilient OpenFlow-based networking

Cited by 140 publications

References 15 publications

Dynamic virtual network restoration with optimal standby virtual router selection

Dynamic virtual network restoration with optimal standby virtual router selection

Resilience support in software-defined networking: A survey

Softwarized 5G Networks Resiliency with Self-Healing

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