Enabling high availability over multiple optical networks

Staessens, Dimitri; Colle, Didier; Lievens, U.; Pickavet, Mario; Demeester, Piet; Colitti, Walter; Nowé, Ann; Steenhaut, Kris; Romeral, Ricardo

doi:10.1109/mcom.2008.4539475

Cited by 23 publications

(10 citation statements)

References 7 publications

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“…If a standard BGP is used for multidomain routing, the node detecting the failure must wait until the protocol re-converges to a stable solution in order to use a new path to restore the affected LSP. The PCE architecture requires either a minimum of two parallel connections between domains [19], or an additional path computation delay if the Backward Recursive Path Computation technique [20] is used dynamically. In both cases (standard BGP or PCE) the restoration time could be very long.…”

Section: Challenges and Solutionsmentioning

confidence: 99%

Restoration in multi-domain GMPLS-based networks

Manolova

Ruepp

Dittmann

et al. 2011

Computer Communications

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In this paper we evaluate the efficiency of using restoration mechanisms in a dynamic multi-domain GMPLS network. Major challenges and solutions are introduced and two well-known restoration schemes (End-to-End and Local-to-End) are evaluated. Additionally, new restoration mechanisms are introduced: one based on the position of a failed link, called Location-Based, and another based on minimizing the additional resources consumed during restoration, called Shortest-New. A complete set of simulations in different network scenarios show where each mechanism is more efficient in terms, such as, resource overbuild or recovery delay.

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Section: Challenges and Solutionsmentioning

confidence: 99%

Restoration in multi-domain GMPLS-based networks

Manolova

Ruepp

Dittmann

et al. 2011

Computer Communications

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“…Based on equations (2) and (3), the connection unavailability of 1 : N SBPP scheme can be expressed as follows [14], [15]:…”

Section: Serv Ice Availabili T Y and Disruption Analysismentioning

confidence: 99%

“…By enabling the Internet network to support different availability services, multi-site companies can manage their service operations based on the services that are available on the different sites [2]. A service be comes unavailable on the Internet when one or more network elements-which could be a node or a link-fail along a selected routing path supporting this service.…”

Section: Introductionmentioning

confidence: 99%

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Probabilistic differentiated availability services in WDM networks protected by shared protection schemes

Alshaer

Elmirghani

2011

12th IFIP/IEEE International Symposium on Integrated Network Management (IM 2011) and Workshops

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This paper derives and evaluates mathematical mod els for supporting differentiated availability services in WDM networks protected by shared backup path protection (SBPP) schemes. These models aim to enable network operators to allocate working and backup resources for dynamic IP traffic connections based on their priority and availability requirements.The resource allocation process is based on optimal trade-off between the amount of allocated backup resources and degree of service availability (quality-of-recovery (QoR)) required for traffic connections arriving dynamically. Using a probabilistic approach based on Markov chain process, mathematical models have been conceived to quantify service availability, disrup tion rate and blocking probability of M:N and l:N SBPP schemes in WDM networks. These models have been analytically and through simulation evaluated in terms of network service availability, disruption rate, network utilization and blocking probability.

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“…It is reasonable to assume that the end-users' expectation is that they get the same or near the same reliability for interdomain as for intradomain connections. Therefore, protection and restoration in multidomain scenarios is a key issue that was investigated by two JAs [20]- [22].…”

Section: Network Resiliencementioning

confidence: 99%