Fast Control Channel Recovery for Resilient In-band OpenFlow Networks

Asadujjaman, A S M; Rojas, Elisa; Alam, Mohammad Shah; Majumdar, Suryadipta

doi:10.1109/netsoft.2018.8460079

Cited by 14 publications

(9 citation statements)

References 14 publications

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“…Asadujjaman et al [20], proposed an innovative mechanism entitled Fast Control Channel Recovery for Resilient Inband OF Networks; their approach consists of protecting the Switch-to-controller (S2C) and controller-to-switch (C2S) communication. To do so, they use a logical ring topology with source-routed forwarding.…”

Section: Related Work and Target Issues A Related Work On Sdn Rementioning

confidence: 99%

On Designing a Resilient SDN C/M-Plane for Multi-Controller Failure in Disaster Situations

et al. 2020

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Network survivability is the ability to maintain service continuity in the presence of failures. This ability might be critical in times where large-scale failures occur, as in the case of disasters. In the past years, Software Defined Networking (SDN) has shown a great potential to allow network programmability by segregating the Control/Management Plane (C/M-Plane) from the forwarding or Data Plane (D-Plane). The controller, a centralized entity, has an overview of the entire network under its domain, which allows it to make informed routing decisions. However, the controller becomes a single-point-of-failure as network devices will have limited knowledge if not connected to a controller. Moreover, in disaster situations, if the affected area is considerably large, there is a high probability that more than a single controller will fail in a short period. Various studies, either following a protection or restoration techniques, have been proposed to address resiliency on SDN, but most of them only consider link or device failure; however, the failure of various controllers due to a large-scale disaster is less explored. In this paper, we consider multi-controller failure and propose a mechanism to reduce the non-operational network devices in disaster situations. Preliminary results show that, by applying the proposed approach, it is possible to achieve substantial improvements in network survivability, with considerably less cost of implementation than existing methods. In particular, using simulation, we achieved a 20% decrease of non-operational devices at the C/M-Plane; and an increase of 30% of success rate at the D-Plane, even if half of the controllers in the topology failed.

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Section: Related Work and Target Issues A Related Work On Sdn Rementioning

confidence: 99%

On Designing a Resilient SDN C/M-Plane for Multi-Controller Failure in Disaster Situations

et al. 2020

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“…Furthermore, bootstrapping requires several seconds and depends on the network update interval. The in-band control approach by Asadujjaman et al [27] tackles multiple failures and implements automatic bootstrapping. However, it does not provide protection (understood as preinstalled backup routes) and controller-to-switch communication is source-routed, which increases packet overhead.…”

Section: Related Workmentioning

confidence: 99%

“…However, no current work accomplishes the same features than Amaru and their source codes were not available in all cases. For these reasons, we picked two of the closest related works: ResilientFlow [6] and Asadujjaman et al [27] for comparison. In particular, firstly, we compare Amaru with RSTP and OSPF for automatic bootstrapping and scalability, because ResilientFlow is based on OSPF and also because they are standard protocols that could be leveraged for in-band control in SDN.…”

Section: B Experimental Setupmentioning

confidence: 99%

“…16. This topology encompasses 19 nodes connected by 24 links spanning approximately 4,920 km, with a total fiber length of approximately 11,183 km [27].…”

Section: B Experimental Setupmentioning

confidence: 99%

“…Finally, to have a comparison with the closest approach in the state of the art, we repeated the same simulation scenario than in the work from Asadujjaman et al [27] to measure convergence time after link failure. The results are illustrated in Fig.…”

Section: ) A-c-e-h (2) A-b-d-f-h and (3) A-g-i -J -H Associatedmentioning

confidence: 99%

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Amaru: Plug&Play Resilient In-Band Control for SDN

et al. 2019

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Software-Defined Networking (SDN) is a pillar of next-generation networks. Implementing SDN requires the establishment of a decoupled control communication, which might be installed either as an out-of-band or in-band network. While the benefits of in-band control networks seem apparent, no standard protocol exists and most of setups are based on ad-hoc solutions. This article defines Amaru, a protocol that provides plug&play resilient in-band control for SDN with low-complexity and high scalability. Amaru follows an exploration mechanism to find all possible paths between the controller and any node of the network, which drastically reduces convergence time and exchanged messages, while increasing robustness. Routing is based on masked MAC addresses, which also simplifies routing tables, minimizing the number of entries to one per path, independently of the network size. We evaluated Amaru with three different implementations and diverse types of networks and failures, and obtained excellent results, providing almost on-the-fly rerouting and low recovery time. INDEX TERMS SDN, OpenFlow, in-band control, resilient networks, path exploration.

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