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基于共享风险链路组(SRLG,shared risk link group)和P圈(P-Cycles,pre-configured cycles)的概念,研究了SRLG约束下p-Cycles的构造问题,引入SRLG完全分离p-Cycles的概念,基于SRLG的简单p-Cycles构造算法和获得更多p-Cycles的SRLG约束下的圈扩展算法提出的SRLG约束下的p-Cycles配置算法(SCAA),实现在光网络中优化配置SRLG完全分离的p-Cycles。通过计算机仿真表明,SCAA最小容量配置方案可以预留更少的网络资源,而SCAA优化容量配置方案可以实现p-Cycles快速配置容量,SCAA算法可以保障配置SRLG分离p-Cycles的高保护效能,使网络具备单SRLG故障恢复能力。
Based on the concept of shared risk link group (SRLG) and P-Cycles (pre-configured cycles), we study the construction of p-Cycles under SRLG constraint and introduce SRLG to completely separate p-Cycles Concept, pragmatic p-Cycles construction algorithm based on SRLG and pragma-based circle expansion algorithm with SRLG constraint The p-Cycles Configuration Algorithm (SCAA) under SRLG constraint is proposed to optimize the configuration of SRLG in optical networks Isolated p-Cycles. Computer simulations show that the SCAA minimum capacity configuration scheme can reserve less network resources and the SCAA optimized capacity configuration scheme can rapidly configure the capacity of p-Cycles. The SCAA algorithm can ensure the high protection efficiency of configuring p-Cycles with SRLG separation. The network has single SRLG failover capability.