格状网中基于DCPC协议的局部扩散式 P圈自动配置

Automatic Configuration P-Cycle with Partial Flooding Based DCPC in Optical Mesh Network

  • 摘要: 为解决线性配置方法DCPC在格状网络拓扑下效率低的问题,通过ASON控制平面技术扩展,设计了一种基于P圈自动配置协议DCPC的扩散式的P圈配置方法F-DCPC,通过圈内节点间的分布式协作快速完成配置,缩短网络的配置时间. 该方法通过圈内节点之间泛洪,快速获得网络的连接与资源分布信息.结果表明,该方法在高负载环境下的格状光网络拓扑结构中具有较短的配置时间. 利用ASON控制平面实现P圈的静态、动态自动化配置,并针对不同的P圈生成算法,通过仿真定量地分析网络采用该方法的额外开销.

     

    Abstract: To solve the problem of inefficiency of DCPC(distributed cycle pre-configuration) in optical mesh network due to linear configuration, a flooding based DCPC is developed by extending techniques in the ASON control plane, which aims to shorten the configuration time. Distributed cooperation between on-cycle nodes can rapidly obtain information about network connectivity and resource distribution. The results showed that F-DCPC takes great advantages in the heavy loaded mesh optical network, and automatic configurations of the static and dynamic P-cycle can be implemented by utilizing ASON controlling techniques. Quantitative analysis of extra overhead involved by F-DCPC is presented by simulation and comparison under several P-cycle enumeration algorithms.

     

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