Exploiting Excess Capacity, Part II: Differentiated Services Under Traffic Growth

Dikbıyık, Ferhat; Tornatore, Massimo; Mukherjee, Biswanath

doi:10.1109/tnet.2014.2335252

Cited by 5 publications

(6 citation statements)

References 39 publications

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“…Here, we consider to exploit EC in the network for this adaptive protection scheme by admitting connections with dedicated protection and switch their protection schemes based on the downtimes they experienced. Even though, in previous works [1], [2], we propose EC management approaches, where each connection occupies an entire wavelength channel, applying them to grooming-capable networks is not straightforward because survivable grooming techniques are quite different than the protection techniques considered in [1], [2]. Also, EC, in this work, is defined by considering both excess bandwidth and grooming ports.…”

Section: Problem Statementmentioning

confidence: 99%

“…Let L p t and L b t be the sets of lightpaths on primary and backup paths, respectively. Then, we can similarly define the availabilities as follows: 2 Here, we mean the statistical availability of the links for convenience, which is the long-term availability. However, a link's actual availability is usually less than its statistical availability during a typical holding time of a connection.…”

Section: Comparison Of Survivable Traffic-groomingmentioning

confidence: 99%

“…This tradeoff is explained in details in Section II. Note that these protection schemes differ from protection schemes mentioned in previous works [1], [2] in the sense that these are designed for survivable grooming by considering a series of lightpaths to support connections.…”

Section: Introductionmentioning

confidence: 99%

“…Ref. [2] is an enhancement of [1] by considering the changes in the states of the connections' downtimes. Note that exploiting EC is a largely unexplored problem, and we provide a brief survey on EC management studies in [1].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Exploiting Excess Capacity for Survivable Traffic Grooming in Optical Backbone Networks

Dikbıyık

Tornatore

Mukherjee

2014

J. Opt. Commun. Netw.

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Backbone networks usually have some excess capacity to accommodate traffic fluctuations and to avoid early capacity exhaustion. Network operators can exploit excess capacity (EC) in optical WDM backbone networks to support survivable traffic grooming, where connection requests are of sub-wavelength granularity and each provisioned request has to be protected from single-link failures. We investigate novel EC management techniques which can improve network performance, in terms of Service-Level Agreement (SLA) violations and bandwidth blockings, with no requirement of deploying additional capacity. We investigate exploiting and managing EC by the following techniques. i) Pre-provisioning: When traffic is light, network resources are reserved by a pre-provisioning scheme, i.e., a connection can be provisioned on reserved protected links to increase availability. We show that pre-provisioning also decreases connection setup time, an important metric for delay-sensitive services. ii) Backup reprovisioning: Since highavailability protection schemes usually consume more resources, connections in our solution can be switched to a protection scheme that provides lower availability (but higher resource efficiency) by reprovisioning backup resources when traffic increases. iii) Hold-lightpath: We propose a new "hold-lightpath" scheme to exploit EC which prevents the termination of preestablished (but unused) resources to increase availability and decrease connection setup time. We compare our techniques with traditional protection schemes for typical daily fluctuating traffic on typical backbone network topologies, and find that significant improvements can be achieved in terms of decreasing SLA violations, bandwidth blocking, and connection setup time.

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Section: Problem Statementmentioning

confidence: 99%

Section: Comparison Of Survivable Traffic-groomingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exploiting Excess Capacity for Survivable Traffic Grooming in Optical Backbone Networks

Dikbıyık

Tornatore

Mukherjee

2014

J. Opt. Commun. Netw.

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“…In [7,8], the authors exploited the excess capacity for new connection pre-provisioning and backup re-provisioning by developing a Mixed-Integer Linear Programming (MILP) and a heuristic. During traffic fluctuation and growth, the algorithm starts free protection resources to be used by newly arrived connection requests, and then starts re-provisioning protection paths with less availability protection schemes.…”

Section: Introductionmentioning

confidence: 99%

Routing post-disaster traffic floods in optical core networks

Nasralla

El-Gorashi

Musa

et al. 2016

2016 International Conference on Optical Network Design and Modeling (ONDM)

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Abstract-The increasing number of disasters around the world calls for a new direction in building the networks; this direction is known as disaster-resilient networks. In this paper, we consider the effect of post-disaster traffic on the core network performance. We evaluate the network blocking during single node flooding with different flood sizes. Then we study four mitigation approaches to maximally serve the traffic floods using the excess capacity, traffic filtering, rerouting and DifferentiatedServices. The results show that the studied approaches reduce blocking by 50% in the worst cases.

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Performance Modeling of a General GPS Scheduling Under Long Range Dependent Traffic

Zhang¹,

Liu

Lu³

et al. 2020

2020 IEEE Intl Conf on Parallel &Amp; Distributed Processing With Applications, Big Data &Amp; Cloud Computing, Sustainable Com

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Exploiting Excess Capacity, Part II: Differentiated Services Under Traffic Growth

Cited by 5 publications

References 39 publications

Exploiting Excess Capacity for Survivable Traffic Grooming in Optical Backbone Networks

Exploiting Excess Capacity for Survivable Traffic Grooming in Optical Backbone Networks

Routing post-disaster traffic floods in optical core networks

Performance Modeling of a General GPS Scheduling Under Long Range Dependent Traffic

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