A relocation-based heuristic for restoring optical cloud services

Natalino, Carlos; Ahmed, Jawwad; Monti, Paolo; Wosinska, Lena; Francês, Renato

doi:10.1109/icocn.2014.6987081

Cited by 8 publications

(8 citation statements)

References 6 publications

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“…The authors in [6], and [5] propose to apply the service relocation concept together with restoration-based techniques. They demonstrate that service relocation is indeed beneficial in improving the restoration performance.…”

Section: Related Workmentioning

confidence: 99%

“…The amount of storage and processing units required by each cloud service are chosen uniformly in the interval [1,100] and [1,5] respectively [6]. Connecting a client node to a DC node requires the establishment of a lightpath with a capacity equal the capacity of one wavelength channel.…”

Section: A Simulation Setupmentioning

confidence: 99%

“…If the original DC node where the cloud service is running is not reachable anymore after a failure (i.e., not enough spare transport resources can be found to provision a backup lightpath), the cloud service can be migrated to a different DC. This operation is known as cloud service relocation and it has already shown good potential in improving the restorability performance of restoration-based techniques in optical cloud networks [5], [6]. On the other hand, the migration process is not instantaneous and need to be used carefully to not significantly affect the cloud service downtime [7].…”

mentioning

confidence: 99%

“…This very good resiliency performance comes at the expense of large resource consumption since backup resources are pre-reserved and cannot be used to provision other cloud services. The design of survivable optical cloud networks using protection-based techniques translates in additional transport and IT resources to be deployed [4], while, in a dynamic provisioning scenario, pre-reserving backup resource negatively affects the blocking probability for service requests [5].…”

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confidence: 99%

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Restoration in Optical Cloud Networks With Relocation and Services Differentiation

Natalino

Wosinska

Spadaro

et al. 2016

J. Opt. Commun. Netw.

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Abstract-Optical cloud networks allow for the integrated management of both optical and IT resources. In this paradigm, cloud services can be provisioned in an anycast fashion, i.e., only the source node asking for a service is specified, while it is up to the cloud control/management system to select the most suitable destination data center (DC) node. During the cloud service provisioning process resiliency is crucial in order to guarantee continuous network operations also in the presence of failures. On the one hand, a survivability strategy needs to be able to meet the availability requirements of each specific cloud service, while on the other hand it must be efficient in using backup resources. This paper proposes a restoration-based survivability strategy, which combines the benefits of both cloud service relocation and service differentiation concepts. The former is used to enhance the restorability performance (i.e., the percentage of successfully restored cloud services) offered by restoration, while the latter ensures that critical services are given the proper consideration while backup resources are assigned. The paper proposes both an ILP formulation which guarantees optimal results and a heuristic, which trades the optimality of the solution achieved by the ILP for faster processing times. Simulation results show that the average service availability and restorability performance obtained by both the ILP and the heuristic are very close to the one achievable using a protection-based strategy, but with the inherent benefit, in terms of efficient use of resources, offered by a restoration-based approach.

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Section: Related Workmentioning

confidence: 99%

Section: A Simulation Setupmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Restoration in Optical Cloud Networks With Relocation and Services Differentiation

Natalino

Wosinska

Spadaro

et al. 2016

J. Opt. Commun. Netw.

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“…In [3] an example of a resilient scheme for optical cloud services that is based on the service relocation concept is proposed. Service relocation can also be used in conjunction with restoration strategies to improve the network performance in terms of average availability and restorability of the cloud services [2] [4].…”

Section: Introductionmentioning

confidence: 99%

Dimensioning optical clouds with shared-path shared-computing (SPSC) protection

Natalino

Monti

França

et al. 2015

2015 IEEE 16th International Conference on High Performance Switching and Routing (HPSR)

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Abstract-Service relocation represents a promising strategy to provide flexible and resource efficient resiliency from link failures in the optical cloud environment. However, when a failure affects a node hosting a datacenter (DC), service relocation from the affected DC is not possible. One alternative to protect against DC failures relies on using design strategies that duplicate the IT (i.e., storage and processing) resources in a backup DC at the expense of increasing resource overbuild (i.e., cost) of the network. This work proposes a dimensioning strategy based on the shared-path shared-computing (SPSC) concept able to protect against any single link, server, or DC failure scenario with minimal resource overbuild for the network and IT infrastructures. SPSC is based on the intuition that only storage units need complete replication in backup DC, while processing units can be instantiated only after the occurrence of a failure, leaving the design strategy some leeway to minimize their number. As result, the proposed SPSC design shows a considerable reduction in the amount of backup resources when compared to the dedicated protection strategies.

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Survivable transparent OFDM optical grids/clouds: fragmentation aware, resource efficient protection with fast failure recovery

Das,

Chatterjee

2024

Photon Netw Commun

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A relocation-based heuristic for restoring optical cloud services

Cited by 8 publications

References 6 publications

Restoration in Optical Cloud Networks With Relocation and Services Differentiation

Restoration in Optical Cloud Networks With Relocation and Services Differentiation

Dimensioning optical clouds with shared-path shared-computing (SPSC) protection

Survivable transparent OFDM optical grids/clouds: fragmentation aware, resource efficient protection with fast failure recovery

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