Supporting Dynamic Bandwidth
Adjustment Based on Virtual Transport
Link in Software-Defined IP Over
Optical Networks
 

Analysis of Research Paper

Wai Yan Kyaw

211AEM007

4.12.2022

Index

Proposal

VTL

Simulation Results

Conclusion

Proposal

In this paper, they propose a concept called virtual transport link (VTL) to support dynamic link aggregation in software-defined IP over optical networks.

The VTL-based dynamic bandwidth adjustment (VTL-DBA) method is proposed for improving the resource utilization
and for simplifying service provisioning


​

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  • Virtual Trasnport Link
  • A virtual connector to bind E2E services and transport resources together, which can achieve software-defined and dynamic aggregation
  • Support transport resources - an optical trasnsport network (OTN), WDM, and elastic optical network (EON)
  • VTL is composed of two parts: physical transport channels and software configuration.

VTL

Virtual Transport Link

Infrastructure of packet over optical transport networks

 

SDION - Software-defined IP over optical network 
SS-AA - Smart service aware application
DCs   - Data Cetners

Comparison between SSBA, SABA and VTL-DBA

Performing VTL-DBA bandwidth allocation and adjustment in a VTL with high priority
Simulation Topologies, Occupied Transport Resource and Resource Utilization in NSFNet and COST239
Block Probability, Resource Utilization Simulation Results in NSFNet and COST239

Resource Utilization of each Transport for QE service in NSFNet and COST239

Conclusion

  • VTL-DBA method efficiently improves the resource utilization of the service provider network and reduces the block probability.
  • Carriers can achieve high resource utilization and provide "pay-as-you-go" services to customers.
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