Segment Routing (SR) is a new fertile ground for Traffic Engineering (TE). By decomposing forwarding paths into segments, which specify a list of intermediate delivery points that a packet must visit on its way to the final destination, SR improves TE tasks and enables new solutions for the optimization of network resource utilization. This work proposes an Evolutionary Computation approach that enables Path Computation Element (PCE), or Software-defined Network (SDN) controllers, to optimize SR configurations for improved traffic distribution. Furthermore, we present a robust semi-oblivious method to address the variability of traffic requirements as well as alternative approaches to ensure a good network performance after link failures. In all cases, the optimization of network resource utilization is achieved using at the most three segments to configure each SR path. Moreover, all proposed optimization methods are made publicly available in a optimization framework developed by the authors.

中文翻译：

---

三段路由流量工程

分段路由 (SR) 是流量工程 (TE) 的新沃土。通过将转发路径分解为段，这些段指定了数据包在到达最终目的地的途中必须访问的中间交付点列表，SR 改进了 TE 任务并启用了优化网络资源利用的新解决方案。这项工作提出了一种进化计算方法，使路径计算元素 (PCE) 或软件定义网络 (SDN) 控制器能够优化 SR 配置以改进流量分配。此外，我们提出了一种强大的半遗忘方法来解决流量需求的可变性以及确保链路故障后良好网络性能的替代方法。在所有情况下，网络资源利用率的优化是通过最多三个网段来配置每条SR路径来实现的。此外，所有提出的优化方法都在作者开发的优化框架中公开可用。