Elastic optical bypasses for traffic bursts

Biernacka, Edyta; Boryło, Piotr; Wójcik, Robert; Domżał, Jerzy

doi:10.1016/j.comcom.2019.07.017

Cited by 4 publications

(6 citation statements)

References 31 publications

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“…Therefore, there is no possibility to provide additional resources when congestions occur. According to the results obtained for the AHL (10), AHL (20), and AHL (30), it can be noticed that the increasing number of candidate paths improves the performance of the AHL approach. When the number of candidate paths increases, more lightpaths can be established.…”

Section: Resultsmentioning

confidence: 97%

“…An increasing number of paths allows for utilizing links not previously used and the network load is distributed over the network evenly. Consequently, the AHL(30) approach achieves a better reduction in BBP when compared to the AHL (10) and AHL (20) approaches. This confirms previous findings.…”

Section: Resultsmentioning

confidence: 99%

“…In [10][11][12][13], the diversification of EON resources is explored to offload traffic fluctuations. Papers [10,11] focus on a path selection policy to offload traffic from congested links, whereas [12] combines AHLs with multi-path in the virtual layer to minimize energy. In [13], the authors present a solution for high-and low-priority traffic.…”

Section: Related Workmentioning

confidence: 99%

“…In cases of AHLs, virtual links were associated with lightpaths which occupied 160 slices (160 slices were visible for IP, whereas 160 slices were hidden for IP and available for AHLs). The selection of 160 slices as hidden slices was based on the results of numerous simulations presented in [10,11].…”

Section: Network Layermentioning

confidence: 99%

See 3 more Smart Citations

Performance Analysis of Automatic Hidden Ligthpaths in Multi-Layer Networks

Biernacka

Domżał

2023

Photonics

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The problem of resource provisioning in multi-layer networks is an important issue. We discuss and analyze resource provisioning in terms of the visibility of optical resources for the virtual layer in a network. In this context, we propose the diversification of the optical spectrum in such a way that some resources are hidden for the virtual layer and used when needed. We introduce and investigate automatic hidden lightpaths to improve resource utilization in multi-layer networks. Our solution uses a software-defined networking concept to automatically set up and release hidden lightpaths, which are not visible at the network layer. We evaluate and analyze two main approaches to resource provisioning in terms of the blocking probability. Future research should focus on resource diversification and the usage of the hidden elastic optical spectrum in modern networks as a promising solution.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Network Layermentioning

confidence: 99%

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Performance Analysis of Automatic Hidden Ligthpaths in Multi-Layer Networks

Biernacka

Domżał

2023

Photonics

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“…The mechanism was also introduced into IP-over-EON architecture in [18]. In EON, the optical spectrum used for the transmission is divided into narrow frequency slices (slots).…”

Section: Ahbmentioning

confidence: 99%

Employing FAMTAR and AHB to Achieve an Optical Resource-Efficient Multilayer IP-Over-EON SDN Network

et al. 2022

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With the global Internet traffic continuously growing, network operators face more and more challenges related to the management of their networks. Efficient utilization of the available network resources becomes crucial to maintain the desired Quality of Service level and control the upsurge in operational expenses. The combination of the Software-Defined Networking concept with the multi-layer network architecture can simplify the process of control and management of the network, its layers, and resources. In this paper, we propose a solution to enhance resource utilization in software-defined multilayer optical networks. The proposed solution takes the advantages of the Software-Defined Networking, Flow-Aware Multi-Topology Adaptive Routing, and Automatic Hidden Bypasses mechanisms to ensure simultaneous, multi-path data transmissions in both IP and optical layers. The Software-Defined Networking controller manages both mentioned mechanisms, selects the best possible bypass, and allocates lightpaths to ensure that the optical spectral efficiency is optimal. The evaluation shows that the proposed solution for multi-layer software-defined network increases the overall network performance and resource utilization.

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