中文摘要：

光网络中引入了共享风险链路组（SRLG）的概念，要求工作通道与保护通道不能处于同一个SRLG之中。文章提出了一种基于SRLG限制的动态共享通道保护算法——动态链路权重配置（Dynamic Link Weight Configuration，DLWC）算法，该算法的关键在于为链路定义了两个动态权重。在计算工作通道和保护通道时，它能综合解决SRLG限制、动态负载均衡和自陷等3个关键问题。

英文摘要：

The concept of Shared Risk Link Group （SRLG） is introduced in optical networks, in which the work path and the protection path should be SRLG-disjoint. A novel dynamic shared-path protection algorithm called Dynamic Link Weight Configuration （DLWC） algorithm based on SRLG constraints is proposed. The key to this algorithm is the definition of two dynamic weights of a link, which can be used to synthetically cope with three essential problems, i.e. SRLG constraints, dynamic loading balance and trap in calculating the work path and the protection path.