Latency-aware service provisioning in survivable multilayer IP-over-elastic optical networks to support multi-class of service transmission

Etezadi, Ehsan; Beyranvand, Hamzeh; Salehi, Jawad A.

doi:10.1016/j.comcom.2021.12.003

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…Some MLR methods concentrated solely on the failure problem in the optical layer [36]. In [37], integer linear programming was used to design a multilayer survivability technique in IP-over-EON to overcome latency problems in multi-class traffic.…”

Section: Related Workmentioning

confidence: 99%

“…To optimize remaining resources in both layers and reduce the setup of new lightpaths and the process of lightpath reconfiguration, various modulation formats and an adaptive routing strategy are employed, achieving better results than the ones presented in [11]. Furthermore, the approach differed from [39,10,35], and [37], as all affected traffic is restored using the same strategies (adaptive routing and reactive defragmentation). There is no prioritization of specific traffic, and the spare capacity of unaffected lightpath is utilized for MLR.…”

Section: Table 2 Parameters Related To Lightpathmentioning

confidence: 99%

“…In addition to serving as a destination router, an IP router can also function as an intermediate router. Data packets entering an IP router are then forwarded to the fiber optic cable in the EON layer for transmission until they reach the destination router, where further processing occurs [37]. In case an IP router experiences a failure, the operator removes the affected IP router (v ∈ V).…”

Section: Network Model and Architecturementioning

confidence: 99%

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Survivability with Adaptive Routing and Reactive Defragmentation in IP-over-EON after A Router Outage

Ridwansyah,

Syarif,

Dewiani

et al. 2023

Int. j. electr. comput. eng. syst. (Online)

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The occurrence of a router outage in the IP layer can lead to network survivability issues in IP-over-elastic-optical networks with consequent effects on the existing connections used in transiting the router. This usually leads to the application of a path to recover any affected traffic by utilizing the spare capacity of the unaffected lightpath on each link. However, the spare capacity in some links is sometimes insufficient and thus needs to be spectrally expanded. A new lightpath is also sometimes required when it is impossible to implement the first process. It is important to note that both processes normally lead to a large number of lightpath reconfigurations when applied to different unaffected lightpaths. Therefore, this study proposes an adaptive routing strategy to generate the best path with the ability to optimize the use of unaffected lightpaths to perform reconfiguration and minimize the addition of free spectrum during the expansion process. The reactive defragmentation strategy is also applied when it is impossible to apply spectrum expansion because of the obstruction of the neighboring spectrum. This proposed strategy is called lightpath reconfiguration and spectrum expansion with reactive defragmentation (LRSE+RD), and its performance was compared to the first Shortest Path (1SP) as the benchmark without a reactive defragmentation strategy. The simulation conducted for the two topologies with two traffic conditions showed that LRSE+RD succeeded in reducing the lightpath reconfigurations, new lightpath number, and additional power consumption, including the additional operational expense compared to 1SP.

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Section: Related Workmentioning

confidence: 99%