在现存的宽带通信网中，网络生存性的重要性得到越来越多的重视。针对网络中跨域故障恢复问题，文章提出一种可应用于多域网络故障恢复的新型双重链路权重机制，并对该故障恢复策略进行了理论分析和程序仿真。仿真结果表明，在网络中应用该策略可以在故障发生之后的短时间内，有效地分散业务流量，降低阻塞率，减少资源冲突产生的概率，大大提高了网络的效率和生存性，使其性能得以明显提高。

In the existing broadband communication networks, increasingly greater attention is given to the importance of network survivability. This paper proposes a novel dual link weight mechanism applicable to the fault recovery of multi-domain networks and conducts theoretical analysis and program simulation of this strategy. The simulation results indicate that the application of this strategy in networks can effectively disperse the traffic, lower the blocking rate and reduce the probability of resource contention in a short time after the occurrence of a fault, thus greatly increasing the network efficiency and significantly improving its survivability and performance.