An efficient approach of backup reprovisioning for multiple link failures in WDM optical networks

This paper investigates an approach for Backup re-provisioning using Shared Path Protection to combat against concurrent multiple failures scenarios. The MSPP approach used, considers the cost related to selection of a backup resource and tries to provide backup to maximum number of vulnerable connections. Secondly, MBR and GBR policies have been used interchangeably based upon the value of Re-provisioning Success Rate (RSR) to ensure optimal resource utilization. Results show that the new approach performs well in terms of Protection Efficiency, Resource Overbuild, Re-provisioning Success Rate and Service Disruption Ratio.