Network resilience: a systematic approach

Smith, Paul J.; Hutchison, David; Sterbenz, James P. G.; Schöller, Marcus; Fessi, Ali; Karaliopoulos, Merkourios; Lac, Chidung; Plattner, Bernhard

doi:10.1109/mcom.2011.5936160

Cited by 151 publications

(97 citation statements)

References 11 publications

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“…As discussed earlier, resilience becomes of paramount importance to the cloud users and providers as well as critical service providers to ensure correct and continuous system operation even in the presence of challenges [23]. We then reinterpret and define cloud resilience as, "the ability to maintain an acceptable level of system operation and service even in the presence of challenges."…”

Section: Policy Based Resilience Managementmentioning

confidence: 98%

Towards policy refinement for resilience management in cloud

Shirazi

Simpson

Syeda

et al. 2016

2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM)

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Abstract-Cloud computing is becoming increasingly important for provision of critical services because of potential cost saving, scalability and elasticity. Therefore, it is particularly important for clouds and cloud-based services to be resilient, i.e., they are able to operate correctly and continuously even in the presence of challenges. To do this, a number of resiliencesupporting mechanisms are needed at various levels in cloud infrastructure. It is non-trivial to manage these mechanisms and there is a need for flexible instruments which assist cloud providers in this complex task. Policy based management is an established instrument to manage resilience supporting mechanisms and they are useful if it allows not only high level description of abstract policy (e.g high level security and resilience requirements), but also enables such policy to be refined and eventually mapped into an appropriate low levels in cloud settings. This paper sheds light on basic concepts behind policy based management in cloud, more specifically it emphasizes the use of policy refinement which is the process of translating higher level requirements (such as security and resilience requirements) into the sequence of actions at lower levels that can implement them, in order to generate more refined policies that govern the behaviour of an overall cloud system when under challenge. We finally present two example scenarios on how policy refinement can work for the cloud to establish its relevance for the overall resilience management.

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Section: Policy Based Resilience Managementmentioning

confidence: 98%

Towards policy refinement for resilience management in cloud

Shirazi

Simpson

Syeda

et al. 2016

2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM)

Self Cite

View full text Add to dashboard Cite

show abstract

“…There is no commonly agreed terminology, e.g., terms such as "robustness", "resilience", "dependability", "survivability", "reliability", etc., have all been used but often without clear differentiation amongst them. In [6], the authors created a systematic approach to the problem. Others, e.g., [7], took a probabilistic view, arguing that since the behaviour of topological metrics, such as connectivity, is dependent on the characteristics of the network, then its robustness must also depend on these characteristics.…”

Section: A Resilience and Caching In Icnmentioning

confidence: 99%

Providing Information Resilience Through Modularity-Based Caching in Perturbed Information-Centric Networks

Chai

Sourlas

Pavlou

2017

2017 29th International Teletraffic Congress (ITC 29)

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Abstract-In this paper, we investigate the provision of a new form of resilience, namely information resilience -targeting reliable communication of information under normal and adverse network conditions. We harness the power and flexibility of information-centric networking (ICN) paradigm where content are named and can be explicitly identified as opposed to the current host-centric Internet. Using ICN principles, a new modularity-based information caching approach is proposed that leverages the concept of modularity such that information reachability and persistency are enhanced especially under perturbed network scenarios, e.g., network failures due to natural disasters or network under malicious attacks. The main idea of our proposal is to exploit the better connectivity of nodes within certain community construct in a network to provide higher information diversity, and thus allow potential access to a higher number of information objects even under various network dynamics. We conduct extensive simulations based on both real and model network topologies and show that our proposal can significantly increase request satisfaction ratios under highly dynamic network scenarios (i.e., network under multiple perturbations) across different system parameters.

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“…Threats and challenges for services can range from simple misconfiguration over large scale natural disasters to targeted attacks. In order to increase the resilience of a given communication network, the probable challenges and risks have to be identified and appropriate resilience metrics have to be defined for the service to be protected, [4]. The resilient Network topology will be divided into several layers.…”

Section: The Resilient Network Designmentioning

confidence: 99%

Resilient Campus Network to Support Research and Educational Network in Ghana [Case Study of Accra Technical University]

Okai¹,

Agbesi²,

Gbedawo³

2017

IJCA

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This paper describes how to setup a fully resilient design in a campus network to support Research and Educational Network in Ghana. The main idea of resilient topology for tertiary institutional campuses is to minimize downtime to the barest possible minimum. These down times usually happen during crashes and device upgrades. This paper describes how all critical devices are used twice to avoid having a single point of failure. Therefore, any single device can be turned off without significant disruption for the connected applications and users. Finally an appropriate resilient network that will support both students and staff research and collaborative works, with adequate bandwidth requirement to render the system scalable within the next seven years has been determined and recommended.

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Network resilience: a systematic approach

Cited by 151 publications

References 11 publications

Towards policy refinement for resilience management in cloud

Towards policy refinement for resilience management in cloud

Providing Information Resilience Through Modularity-Based Caching in Perturbed Information-Centric Networks

Resilient Campus Network to Support Research and Educational Network in Ghana [Case Study of Accra Technical University]

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