An Approach to Dual-failure Survivability for Multi Quality Data Based On Double p-Cycle
The authors propose new method to provide dual failures survivability using Double p-cycle. A p-cycle is set up for each link. When link is failure, the system will on-line select the best route of p-cycles to react. In single failure or dual failure, data does not divert randomly in route of p-cycles. Data packets are switched based on priority criteria it means that the higher priority packets go through shortest distance route of p-cycles and lowest priority data packets go through longest distance route of p-cycles. Dual-failure problem has received attention recently due to the network scale.