School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Sensors (Basel). 2018 Dec 22;19(1):49. doi: 10.3390/s19010049.
Software-defined networks (SDNs) are improving the controllability and flexibility of networks as an innovative network architecture paradigm. Segment routing (SR) exploits an end-to-end logical path and is composed of a sequence of segments as an effective routing strategy. Each segment is represented by a middle point. The combination of SR and SDN can meet the differentiated business needs of users and can quickly deploy applications. In this paper, we propose two routing algorithms based on SR in SDN. The algorithms aim to save the cost of the path, alleviate the congestion of networks, and formulate the selection strategy by comprehensively evaluating the value of paths. The simulation results show that compared with existing algorithms, the two proposed algorithms can effectively reduce the consumption of paths and better balance the load of the network. Furthermore, the proposed algorithms take into account the preferences of users, actualize differentiated business networks, and achieve a larger comprehensive evaluation value of the path compared with other algorithms.
软件定义网络（SDN）作为一种创新的网络架构范例，提高了网络的可控性和灵活性。分段路由（SR）利用端到端的逻辑路径，并由一系列段组成，是一种有效的路由策略。每个段都由一个中间点表示。SR 和 SDN 的结合可以满足用户的差异化业务需求，并能够快速部署应用程序。在本文中，我们提出了两种基于 SDN 中 SR 的路由算法。这些算法旨在节省路径成本，缓解网络拥塞，并通过综合评估路径的价值来制定选择策略。仿真结果表明，与现有算法相比，所提出的两种算法能够有效地降低路径的消耗，更好地平衡网络的负载。此外，所提出的算法考虑了用户的偏好，实现了差异化的业务网络，并与其他算法相比，实现了更大的路径综合评估值。
