Spare capacity modelling and its applications in survivable iP-over-optical networks

S. Al-Barrak, D.A. Harle

Research output: Contribution to conferencePaper

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Abstract

As the interest in IP-over-optical networks are becoming the preferred core network architecture, survivability has emerged as a major concern for
network service providers; a result of the potentially huge traffic volumes that will be supported by optical infrastructure. Therefore, implementing recovery
strategies is critical. In addition to the traditional recovery schemes based around protection and restoration mechanisms, pre-allocated restoration represents a potential candidate to effect and maintain network resilience under failure conditions. Preallocated restoration technique is particularly interesting
because it provides a trade-off in terms of recovery performance and resources between protection and restoration schemes. In this paper, the pre-allocated
restoration performance is investigated under single and dual-link failures considering a distributed GMPLSbased IP/WDM mesh network. Two load-based spare capacity optimisation methods are proposed in this paper; Local Spare Capacity Optimisation (LSCO) and Global Spare Capacity Optimisation (GSCO).
Original languageEnglish
Number of pages6
Publication statusPublished - 2006
Event2nd European Modelling and Simulation Symposium - Barcelona, Spain
Duration: 2 Oct 20064 Oct 2006

Conference

Conference2nd European Modelling and Simulation Symposium
Abbreviated titleEMSS2006
CountrySpain
CityBarcelona
Period2/10/064/10/06

Fingerprint

Fiber optic networks
Restoration
Recovery
Network architecture
Wavelength division multiplexing
Telecommunication links

Keywords

  • IP over optical networks
  • pre-emption
  • pre-allocated restoration
  • survivability

Cite this

Al-Barrak, S., & Harle, D. A. (2006). Spare capacity modelling and its applications in survivable iP-over-optical networks. Paper presented at 2nd European Modelling and Simulation Symposium, Barcelona, Spain.
Al-Barrak, S. ; Harle, D.A. / Spare capacity modelling and its applications in survivable iP-over-optical networks. Paper presented at 2nd European Modelling and Simulation Symposium, Barcelona, Spain.6 p.
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Al-Barrak, S & Harle, DA 2006, 'Spare capacity modelling and its applications in survivable iP-over-optical networks' Paper presented at 2nd European Modelling and Simulation Symposium, Barcelona, Spain, 2/10/06 - 4/10/06, .

Spare capacity modelling and its applications in survivable iP-over-optical networks. / Al-Barrak, S.; Harle, D.A.

2006. Paper presented at 2nd European Modelling and Simulation Symposium, Barcelona, Spain.

Research output: Contribution to conferencePaper

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T1 - Spare capacity modelling and its applications in survivable iP-over-optical networks

AU - Al-Barrak, S.

AU - Harle, D.A.

PY - 2006

Y1 - 2006

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AB - As the interest in IP-over-optical networks are becoming the preferred core network architecture, survivability has emerged as a major concern for network service providers; a result of the potentially huge traffic volumes that will be supported by optical infrastructure. Therefore, implementing recovery strategies is critical. In addition to the traditional recovery schemes based around protection and restoration mechanisms, pre-allocated restoration represents a potential candidate to effect and maintain network resilience under failure conditions. Preallocated restoration technique is particularly interesting because it provides a trade-off in terms of recovery performance and resources between protection and restoration schemes. In this paper, the pre-allocated restoration performance is investigated under single and dual-link failures considering a distributed GMPLSbased IP/WDM mesh network. Two load-based spare capacity optimisation methods are proposed in this paper; Local Spare Capacity Optimisation (LSCO) and Global Spare Capacity Optimisation (GSCO).

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KW - pre-emption

KW - pre-allocated restoration

KW - survivability

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M3 - Paper

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Al-Barrak S, Harle DA. Spare capacity modelling and its applications in survivable iP-over-optical networks. 2006. Paper presented at 2nd European Modelling and Simulation Symposium, Barcelona, Spain.