The telecommunication networks have become an indispensable part of our everyday life, providing support for such important areas as business, education, health care, finances, entertainment and social life. Alongside their continuous and uninterrupted operation is required while numerous new threats and attack scenarios emerge. The international security organisations warn against increasing likelihood of nuclear weapon or electro-magnetic pulse (EMP) attacks, which can be extremely harmful also for transport networks. On that background, we study efficient design of network resilient to EMP attack wherein the required protection level is provided by the application of multipath routing and military grade bunkers (advanced electro-magnetic radiation resilient approaches protecting whole network node) implementation. Formally, we define and study problem of bunkers location, routing and spectrum allocation (BLRSA) in elastic optical network (EON). In the problem objective we address two criteria - network resilience (measured by the average lost flow per potential attack) and spectrum usage. For that problem we propose integer linear programming (ILP) model and two dedicated heuristics - 1S-RSA and 2S-RSA. Then, we perform extensive numerical experiments divided into three parts: (i) tuning of the proposed approaches, (ii) comparison with reference methods, (iii) realistic case study - efficient EMP-resilient network design. In the case study we analyze benefits and costs of the proposed protection scheme. Moreover, we also analyze vulnerabilities of three realistic network topologies to EMP attacks and identify their critical nodes. The investigation proves high efficiency of the proposed approaches and shows that they allow to save up to 90% of traffic lost in the case of no protection against these types of attacks.
翻译:电信网络已成为我们日常生活不可或缺的一部分,为商业、教育、保健、金融、娱乐和社会生活等重要领域提供了支持。除了需要持续和不间断地运作之外,还需要不断和不间断地运作,同时出现许多新的威胁和袭击情景。国际安全组织警告,核武器或电磁脉冲袭击的可能性会增加,这对运输网络也极为有害。在这种背景下,我们研究抗电磁脉冲袭击的网络高效设计,通过应用多路路路路路由和军用级掩体(先进的电磁辐射抗御方法保护整个网络节点)的实施,提供所需的保护水平。在形式上,我们界定和研究掩体位置、路由和频谱分配的问题。 在问题目标中,我们处理的是两个标准――网络复原力(以潜在袭击的平均流失流量衡量)和频谱使用。关于这一问题,我们建议采用直线式编程序模式和两个专门的高性肝脏掩体掩体 — 1S-RSA 和 2S-RSA 执行。然后,我们定义并研究舱定位三个高数值实验方法,我们对比了电子路段设计的网络设计成本。