NDLI: Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures

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Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures

Content Provider	MDPI
Author	Yu, Xiaosong Lu, Lu Zhao, Yongli Wang, Feng Nag, Avishek Li, Xinghua Zhang, Jie
Copyright Year	2021
Description	With the emergence of cloud services based on data centers, demands for bandwidth-intensive applications have increased dramatically, and application services have transferred to a more diversified direction. Management as well as capacity of the backbone network needs further development to catch up with rapidly evolved application demands. Optical network virtualization can facilitate the sharing of physical infrastructure among multiple network applications. Virtual Network Embedding (VNE), the main implementation of network virtualization, determines how to map a virtual network request onto physical substrate. To expand the network capacity, flexible-grid elastic optical networks have been considered as a promising supporting technology for the future infrastructure of the next-generation Internet. However, due to the expense of key enabling equipment for flexible grid optical networks, the brown-field migration from a fixed grid to a flexible grid gave birth to the co-existing fixed/flexible grid. Based on the co-existing fixed/flexible grid optical networks, we investigate the problem of Virtual Optical Network (VON) provisioning, and present a flexible-grid-aware virtual network embedding algorithm to map the virtual networks onto the substrate network. In addition, the performance of the algorithm was evaluated under four different network scenarios. Simulation results show that the proposed algorithm can achieve better performance in all four scenarios.
Starting Page	2067
e-ISSN	20799292
DOI	10.3390/electronics10172067
Journal	Electronics
Issue Number	17
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2021-08-26
Access Restriction	Open
Subject Keyword	Electronics Computation Theory and Mathematics Virtual Optical Network (von) Flexible Grid Wdm Virtual Network Embedding (vne) Mixed-grid
Content Type	Text
Resource Type	Article

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