Prioritized traffic recovery over GMPLS networks

The paper proposes a prioritized traffic recovery model for generalized multiprotocol label switching (GMPLS) networks. The network traffic is differentiated into four classes, with the highest prioritized class achieving dedicated protection, the second prioritized class obtaining shared restoration, the third prioritized class attaining on-line restoration, and no recovery for the lowest prioritized class. The QoS performance of such a model is evaluated by extensive simulations. The results show that delay sensitive traffic receives the fastest recovery service, throughput sensitive traffic with light load takes a longer recovery time, and the throughput sensitive traffic with heavy load experiences the lowest recovery service