基于PCE的多域光网络安全组播路由算法

IETF提出了基于路径计算单元(Path Computation Element)的多域光网络架构方式，能够很好的解决跨域路由的计算问题，但由于光网络的透明性，分层PCE架构下的光网络存在安全威胁。因此，如何提高光网络中信息传输的安全性是一个重要的问题。在PCE架构的基础上，利用信任度、接种疫苗及免疫选择等关键技术，设计了多约束条件下基于人工免疫和信任度的多域光网络安全组播路由算法，在保证光树可信和高收敛速度的前提下，可使组播树的综合成本最小。经分析及仿真实验表明，与传统的多域光网络最短路径树组播路由算法相比，具有更低的综合成本和更优的抗阻塞性能。

Multi - domain Optical Network Secure Multicast Routing Algorithm Based on PCE

IETF proposed the Path Computation Element architecture,it can solve the problem of cross-domain routing, but because of the transparency of the optical network, there is a security threat in the optical network under the hierarchical PCE architecture. Therefore, how to improve the security of information transmission in optical networks is an important issue. On the basis of PCE architecture, a multi - domain optical network security multicast routing algorithm based on artificial immune and trust degree under multi - constraint condition is designed by using key technologies such as trust degree, vaccination and immune selection. It can ensure the integration cost of the multicast tree under the premise of ensuring the trust and high convergence speed of the optical tree. The results of the analysis and simulation show that the algorithm has lower comprehensive cost and better anti - blocking performance than the traditional short - path tree multicast routing algorithm of multi - domain optical network.