Elastic Optical Networks: Fundamentals, Design, Control, and Management

Chatterjee, Bijoy Chand; Oki, Eiji

doi:10.1201/9780429465284

Cited by 39 publications

(27 citation statements)

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“…The results obtained for net#1, net#2, and net#3 are plotted in Figs. 8 10 respectively. The results obtained from using LCA based routing are compared with alternate routing scheme as routes are computed in the offline phase in both routing schemes.…”

Section: Tablementioning

confidence: 98%

“…Similarly, traditional WDM based algorithms with only the wavelength continuity constraints are not application for EON with heterogeneous spectrum allocation depending on the modulation format as well as the traffic demand. EON also considers the spectrum contiguity constraint along with the spectrum continuity which means that the allocated FS will be adjacent along the optical path [8]. In [9]- [11], the concepts, roles, and benefits of EON with random data rates are presented.…”

Section: Introductionmentioning

confidence: 99%

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Link Congestion Aware Proactive Routing for Dynamic Traffic in Elastic Optical Networks

et al. 2021

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Fixed alternate routing is a potential routing scheme for routing and spectrum allocation (RSA) in elastic optical networks (EON) which has less complexity and time consumption compared to adaptive routing scheme. However, adaptive routing scheme efficiently reduces the amount of network bandwidth blocking probabilities (BBPs) which uses traffic engineered paths and tunes according to the current network status. In this paper, an algorithm for routing is proposed for dynamic traffic in EON which works iteratively to arrange the pre-computed fixed alternate routes offline to incorporate link loading. During the offline process, the pre-computed routes are arranged with an objective to reduce link congestion and diverts lightpaths to the under-utilized links. The proposed scheme merges the properties of fixed alternate routing and adaptive routing and is utilized for dynamic traffic in EON. It has been shown through simulation results that the proposed scheme efficiently improves the performance of RSA in EON and reduces the amount of BBPs compared to the fixed alternate routing and an existing constrained-lower-indexed-block (CLIB) based adaptive routing algorithm. The proposed LCA greatly reduces congestion over all links during dynamic network operation and lowers congestion spikes over some links which occues in the existing alternate routing scheme in different network scenarios.

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Section: Tablementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Link Congestion Aware Proactive Routing for Dynamic Traffic in Elastic Optical Networks

et al. 2021

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“…E LASTIC optical networks (EONs) were introduced to address the limitation of spectrum usage in existing wavelength-division multiplexing (WDM)-based optical networks by providing spectrum-efficient and scalable transport of 100 Gbit/s services and beyond, [1][2][3]. It also aggregates the throughput per fiber link to approximately 10-100 Tb/s.…”

Section: Introductionmentioning

confidence: 99%

Squeezed Protection in Elastic Optical Networks Subject to Multiple Link Failures

Assis¹,

Almeida²,

Dias³

et al. 2021

Preprint

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<div>Elastic optical network (EON) is fast becoming a key solution for designing optical network with better usage of spectrum resources or other objectives of interest to tenant and/or operators. A primary concern of EONs is to protect the network against failures of its elements, because this kind of event can provoke the loss of substantial amount of traffic. In this paper, we propose a new mixed integer linear programming (MILP) formulation for protecting the network traffic against multiple link failures. The key idea is to use bandwidth squeezing together with grooming capability to provide few extra traffic for protection and guarantee a minimum bandwidth for each source–destination node pair under multiple failure events. The proposed formulation solves the virtual topology design problem jointly with the grooming, routing, modulation and spectrum allocation (RMSA) tasks. Due to the non-deterministic polynomial time (NP-hard) nature of the proposed MILP formulation, a heuristic strategy (referred to as two-step MILP) for large networks is also proposed. The solutions and performance of the proposed MILP formulation and two-step MILP analyzed through case studies in a small network. In addition, the performance of three large networks is assessed for cases scenarios where connections are under different service-level agreement (SLA). In view of proposed formulation and two-step MILP, it is possible to identify the configurations that ensure better usage of spectrum resources with different kinds of protection against single or multiple link failures.</div>

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“…A new paradigm has been proposed to solve prior problems, denoted as Elastic Optical Network (EON) [8]. This modern architecture attempts to assign resources to different VOLUME 4, 2016 users according to their bandwidth requirements.…”

Section: Introductionmentioning

confidence: 99%

A Topology-Based Spectrum Assignment Solution for Static Elastic Optical Networks With Ring Topologies

2020

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Elastic Optical Networks: Fundamentals, Design, Control, and Management

Cited by 39 publications

References 0 publications

Link Congestion Aware Proactive Routing for Dynamic Traffic in Elastic Optical Networks

Link Congestion Aware Proactive Routing for Dynamic Traffic in Elastic Optical Networks

Squeezed Protection in Elastic Optical Networks Subject to Multiple Link Failures

A Topology-Based Spectrum Assignment Solution for Static Elastic Optical Networks With Ring Topologies

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