Abstract
Virtual private networks (VPNs) provide customers with a secure and manageable communication environment. A VPN resource provisioning model, called hose model, provides customers with the flexibility to specify the bandwidth requirement of a VPN. For the network service provider (NSP), traffic engineering is an essential requirement for better utilization of the network backbone, while meeting the requirements specified by customers. In this paper, two vital traffic engineering problems for hose-model VPNs are investigated: (1) how to maximize the number of VPNs successfully established on the network backbone, and (2) how to find a set of resource-efficient backup paths for a VPN under a single link failure model. To address these problems, we propose two novel algorithms for hose-model VPN provisioning. We use rejection ratio for the first problem and protected bandwidth allocation for the second as the main performance metrics to evaluate different algorithms, respectively. Simulation results show that our algorithms outperform previous proposed approaches.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.