The development of next-generation networks is revolutionizing network operators' management and orchestration practices worldwide. The critical services supported by these networks require increasingly stringent performance requirements, especially when considering the aspect of network reliability. This increase in reliability, coupled with the mass generation and consumption of information stemming from the increasing complexity of the network and the integration of artificial intelligence agents, affects transport networks, which will be required to allow the feasibility of such services to materialize. To this end, traditional recovery schemes are inadequate to ensure the resilience requirements of next-generation critical services given the increasingly dynamic nature of the network. The work presented in this paper proposes a probabilistic and fault-tolerant robust traffic grooming model for OTN-over-DWDM networks. The model's parameterization gives network operators the ability to control the level of protection and reliability required to meet their quality of service and service level agreement guarantees. The results demonstrate that the robust solution can ensure fault tolerance even in the face of demand uncertainty without service disruptions and the need for reactive network maintenance.

翻译：下一代网络的发展正在全球范围内彻底改变网络运营商的管理与编排实践。这些网络所承载的关键服务对性能要求日益严苛，尤其在网络可靠性方面。可靠性的提升，加之网络日益复杂化以及人工智能体集成所带来的海量信息生成与消耗，对传输网络产生了深远影响——传输网络必须确保此类服务具备实际可行的基础。鉴于网络动态性日益增强，传统恢复方案已无法满足下一代关键服务的韧性需求。本文提出了一种面向OTN-over-DWDM网络的概率化容错鲁棒流量疏导模型。该模型的参数化设计使网络运营商能够灵活控制保护级别与可靠性水平，以满足其服务质量与服务等级协议保障要求。实验结果表明，该鲁棒解决方案即使在面对流量需求不确定性的情况下，也能确保容错能力，且无需中断服务或进行被动网络维护。