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如何在缺乏全局信息的条件下构建安全可靠的组播树,是智能光网络分域管理后引入的一个新问题。针对此问题,通过建立新型的多域智能光网络超图模型,在考虑物理或攻击损伤的约束条件下,利用基于超路径的域间超树构建方法,结合K最短路径策略,提出了一种基于超图模型的多域ASON损伤感知组播路由算法,并进行了实例分析。本文算法在完成多域组播路由建立与波长分配的同时,具有较低的时间复杂度。通过测量K值、组播规模、波长数量及分配策略、域数量对网络平均连接阻塞率的影响,实验结果表明,本文算法是有效的且取得了较好的阻塞性能,同时建议多域ASON组播规模大小应与域的数量保持一定的比例均衡。
How to construct a safe and reliable multicast tree under the condition of lacking of global information is a new problem introduced after the split management of the intelligent optical network. In order to solve this problem, a new multi-domain intelligent optical network hypergraph model is established, and under the constraints of physical or attack damage, a super-tree-based super-tree construction method based on hyperpath and K-shortest path strategy are proposed Multi-domain ASON DRM Multicast Routing Algorithm Based on Hypergraph Model and Case Study. The algorithm in this paper has lower time complexity while establishing multi-domain multicast routing establishment and wavelength assignment. By measuring the value of K, multicast size, number of wavelengths and allocation strategy, the influence of the number of domains on the average connection blocking rate of the network, the experimental results show that the proposed algorithm is effective and has achieved good blocking performance. The size of broadcast should be proportional to the number of domains.