一种MPLS故障恢复算法

A Method of MPLS-Based Recovery

MPLS故障恢复机制解决了第 3层 (IP)重路由速度较慢和低层故障恢复机制功能较弱的缺陷 ,现有的Makam方案丢包较多 ,而Haskin方案虽解决了丢包问题 ,但时延较大且失序分组较多 结合二者提出了H M方案 ,并给出了算法描述 ,它通过在Haskin方案中增加故障指示信号将局部恢复和全局恢复有机地结合起来 理论分析和仿真实验均表明 ,H M方案兼具Makam和Haskin方案的优势 ,对平均时延和丢包有明显改善 ,平均时延接近Makam方案 ,丢包比Haskin方案还略低 。

MPLS based recovery provides faster response to faults than traditional Layer 3 approaches and more protection functions than lower layer mechanisms H M scheme for MPLS? based recovery is presented to solve the packet loss problem of Makam's scheme and delay and packet reordering problems of Haskin's scheme It integrates global repair and local repair by introducing fault indication signal to Haskin's scheme Both theoretical analyses and simulation results show that H M scheme has less packet reordering and much lower delay and packet losses