2015/09/01 by S. Sedef Savas, Massimo Tornatore, Savas, S. Sedef +7
Computer Science · Engineering · #Advanced Optical Network Technologies #Advanced Photonic Communication Systems #FOS: Computer and information sciences #Networking and Internet Architecture (cs.NI) #Software-Defined Networks and 5G
paper · pdf · doi:10.48550/arxiv.1509.00509
openalex publication_date 2015/09/01 · openalex created_date 2022/08/09 · openalex updated_date 2026/07/28
Communication networks, such as core optical networks, heavily depend on\ntheir physical infrastructure, and hence they are vulnerable to man-made\ndisasters, such as Electromagnetic Pulse (EMP) or Weapons of Mass Destruction\n(WMD) attacks, as well as to natural disasters. Large-scale disasters may cause\nhuge data loss and connectivity disruption in these networks. As our dependence\non network services increases, the need for novel survivability methods to\nmitigate the effects of disasters on communication networks becomes a major\nconcern. Software-Defined Networking (SDN), by centralizing control logic and\nseparating it from physical equipment, facilitates network programmability and\nopens up new ways to design disaster-resilient networks. On the other hand, to\nfully exploit the potential of SDN, along with data-plane survivability, we\nalso need to design the control plane to be resilient enough to survive network\nfailures caused by disasters. Several distributed SDN controller architectures\nhave been proposed to mitigate the risks of overload and failure, but they are\noptimized for limited faults without addressing the extent of large-scale\ndisaster failures. For disaster resiliency of the control plane, we propose to\ndesign it as a virtual network, which can be solved using Virtual Network\nMapping techniques. We select appropriate mapping of the controllers over the\nphysical network such that the connectivity among the controllers\n(controller-to-controller) and between the switches to the controllers\n(switch-to-controllers) is not compromised by physical infrastructure failures\ncaused by disasters. We formally model this disaster-aware control-plane design\nand mapping problem, and demonstrate a significant reduction in the disruption\nof controller-to-controller and switch-to-controller communication channels\nusing our approach.\n