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研究了多域光网络中的路由保护问题。为了避免多域光网络通路保护二步算法可能导致的多域陷阱问题,提出了一种基于Suurballe算法扩展的多域联合路由保护算法。仿真表明,相比传统的多域通路保护二步算法,该算法资源利用率高,阻塞率低,平均每连接跨域数小。
The problem of routing protection in multi-domain optical networks is studied. In order to avoid the multi-domain trap caused by the two-step algorithm of multi-domain optical network path protection, a multi-domain combined routing protection algorithm based on Suurballe algorithm expansion is proposed. The simulation shows that compared with the traditional two-step multi-domain path protection algorithm, this algorithm has high resource utilization rate, low blocking rate and average cross-domain per connection.