Measuring the survivability of networks to geographic correlated failures

X Long, D Tipper, T Gomes - Optical Switching and Networking, 2014 - Elsevier
Wide area backbone communication networks are subject to a variety of hazards that can
result in network component failures. Hazards such as power failures and storms can lead to …

Finding critical regions and region-disjoint paths in a network

S Trajanovski, FA Kuipers, A Ilić… - IEEE/ACM …, 2014 - ieeexplore.ieee.org
Due to their importance to society, communication networks should be built and operated to
withstand failures. However, cost considerations make network providers less inclined to …

List of shared risk link groups representing regional failures with limited size

J Tapolcai, L Rónyai, B Vass… - IEEE INFOCOM 2017 …, 2017 - ieeexplore.ieee.org
Shared Risk Link Group (SRLG) is a failure the network is prepared for, which contains a set
of links subject to a common risk of single failure. During planning a backbone network, the …

Fast enumeration of regional link failures caused by disasters with limited size

J Tapolcai, L Rónyai, B Vass… - IEEE/ACM transactions …, 2020 - ieeexplore.ieee.org
At backbone network planning, an important task is to identify the failures to get prepared for.
Technically, a list of link sets, called Shared Risk Link Groups (SRLG), is defined. The …

How to model and enumerate geographically correlated failure events in communication networks

B Vass, J Tapolcai, D Hay, J Oostenbrink… - Guide to Disaster …, 2020 - Springer
Several works shed light on the vulnerability of networks against regional failures, which are
failures of multiple pieces of equipment in a geographical region as a result of a natural or …

Enumerating Maximal Shared Risk Link Groups of Circular Disk Failures Hitting k Nodes

B Vass, J Tapolcai… - IEEE/ACM Transactions …, 2021 - ieeexplore.ieee.org
Many recent studies shed light on the vulnerability of networks against large-scale natural
disasters. The corresponding network failures, called regional failures, are manifested at …

DateLine: Efficient Algorithm for Computing Region Disjoint Paths in Backbone Networks

E Bérczi-Kovács, P Gyimesi, B Vass… - IEEE Journal on …, 2025 - ieeexplore.ieee.org
Survivable routing is crucial in backbone networks to ensure connectivity, even during
failures. During network design, groups of network elements prone to potential failure events …

Max-flow min-cut theorem and faster algorithms in a circular disk failure model

Y Kobayashi, K Otsuki - IEEE INFOCOM 2014-IEEE conference …, 2014 - ieeexplore.ieee.org
Fault-tolerance is one of the most important factors in designing networks. Failures in
networks are sometimes caused by an event occurring in specific geographical regions such …

Improved max-flow min-cut algorithms in a circular disk failure model with application to a road network

K Otsuki, Y Kobayashi, K Murota - European Journal of Operational …, 2016 - Elsevier
In the evaluation of network reliability, the objectives are to model reliability of networks
appropriately and to compute it in a realistic time. We can consider various models of …

The Earth is nearly flat: Precise and approximate algorithms for detecting vulnerable regions of networks in the plane and on the sphere

B Vass, L Németh, J Tapolcai - Networks, 2020 - Wiley Online Library
Several recent works shed light on the vulnerability of networks against regional failures,
which are failures of multiple pieces of equipment in a geographical region as a result of a …