Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures
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 u...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Electronics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-9292/10/17/2067 |
| _version_ | 1797521557844656128 |
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| author | Xiaosong Yu Lu Lu Yongli Zhao Feng Wang Avishek Nag Xinghua Li Jie Zhang |
| author_facet | Xiaosong Yu Lu Lu Yongli Zhao Feng Wang Avishek Nag Xinghua Li Jie Zhang |
| author_sort | Xiaosong Yu |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T08:14:12Z |
| format | Article |
| id | doaj.art-f2379c609ef446c081f89b2ab2d880e5 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T08:14:12Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-f2379c609ef446c081f89b2ab2d880e52023-11-22T10:29:27ZengMDPI AGElectronics2079-92922021-08-011017206710.3390/electronics10172067Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical InfrastructuresXiaosong Yu0Lu Lu1Yongli Zhao2Feng Wang3Avishek Nag4Xinghua Li5Jie Zhang6State Key Laboratory of Information Photonics and Optical Communications (IPOC), Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, ChinaState Key Laboratory of Information Photonics and Optical Communications (IPOC), Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, ChinaState Key Laboratory of Information Photonics and Optical Communications (IPOC), Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, ChinaState Grid Electric Power Technical Research Institute, Yinchuan 750001, ChinaSchool of Electrical and Electronic Engineering, University College Dublin, Belfield, Dublin 4 D04 V1W8, IrelandState Grid Electric Power Technical Research Institute, Yinchuan 750001, ChinaState Key Laboratory of Information Photonics and Optical Communications (IPOC), Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, ChinaWith 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.https://www.mdpi.com/2079-9292/10/17/2067Virtual Optical Network (VON)flexible gridWDMVirtual Network Embedding (VNE)mixed-grid |
| spellingShingle | Xiaosong Yu Lu Lu Yongli Zhao Feng Wang Avishek Nag Xinghua Li Jie Zhang Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures Electronics Virtual Optical Network (VON) flexible grid WDM Virtual Network Embedding (VNE) mixed-grid |
| title | Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures |
| title_full | Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures |
| title_fullStr | Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures |
| title_full_unstemmed | Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures |
| title_short | Virtual Network Provisioning over Mixed-Fixed/Flexible-Grid Optical Infrastructures |
| title_sort | virtual network provisioning over mixed fixed flexible grid optical infrastructures |
| topic | Virtual Optical Network (VON) flexible grid WDM Virtual Network Embedding (VNE) mixed-grid |
| url | https://www.mdpi.com/2079-9292/10/17/2067 |
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