Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Saving CAPEX by Extending Flexgrid-based Core Optical Networks Toward the Edges [Invited]

Not Accessible

Your library or personal account may give you access

Abstract

National IP/multiprotocol label switching (MPLS) networks have been designed using a multilayer approach to take advantage of the optical layer’s longer reach. In that approach, the IP/MPLS layer performs routing and flow aggregation, whereas the optical layer, based on wavelength division multiplexing technology, transports those aggregated flows into optical connections. However, the flexgrid technology, featuring a finer granularity, also allows the performance of grooming at the optical layer, and hence, the aggregation level of the incoming flows can be reduced. Taking advantage of that fact, in this paper we propose a new network architecture consisting of a number of IP/MPLS areas performing routing and aggregating flows to the desired level and a flexgrid-based core network connecting the areas among them. A two-step procedure to design the whole network is presented where locations are first partitioned into a set of areas, and then each area network and the flexgrid core is designed separately. Mixed-integer linear programming models are developed for the resulting optimization problems. Solving these models, however, becomes impractical for real-sized scenarios so evolutionary heuristics based on the biased random-key genetic algorithm framework are also proposed. Extending the core toward the edges results in significant savings in both the core and IP/MPLS networks.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Designing national IP/MPLS networks with flexgrid optical technology

Luis Velasco, Paul Wright, Andrew Lord, and Gabriel Junyent
Opt. Express 21(3) 3336-3341 (2013)

CAPEX Study for a Multilayer IP/MPLS-Over-Flexgrid Optical Network

O. Pedrola, A. Castro, L. Velasco, M. Ruiz, J. P. Fernández-Palacios, and D. Careglio
J. Opt. Commun. Netw. 4(8) 639-650 (2012)

Survivable IP/MPLS-Over-WSON Multilayer Network Optimization

M. Ruiz, O. Pedrola, L. Velasco, D. Careglio, J. Fernández-Palacios, and G. Junyent
J. Opt. Commun. Netw. 3(8) 629-640 (2011)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (5)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (64)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved