Abstract

With network virtualization, the physical infrastructure can be partitioned into multiple parallel virtual networks for sharing purposes. However, different transport technologies or quality of service (QoS) levels may impact both the requested amount of resources and the characteristics of different virtual instances that can be built on top of a single physical infrastructure. In this paper we propose a novel mixed integer linear programming (MILP) formulation for different schemes of protection in scenarios where multiple virtual topologies run over an elastic optical network. The proposed MILP formulation uses the concept of bandwidth squeezing to guarantee a minimum bandwidth for surviving virtual topologies. It achieves a high level of survivability for traffic that is subject to a different committed service profile for each virtual topology. Case studies are carried out in order to analyze the basic properties of the formulation in small networks, and three heuristics are proposed for larger networks.

© 2016 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
SLA Formulation for Squeezed Protection in Elastic Optical Networks Considering the Modulation Format

K. D. R. Assis, R. C. Almeida, H. Waldman, A. F. Santos, M. S. Alencar, M. J. Reed, A. Hammad, and D. Simeonidou
J. Opt. Commun. Netw. 11(5) 202-212 (2019)

Joint Multi-layer Survivability Techniques for IP-Over-Elastic-Optical-Networks

P. Papanikolaou, K. Christodoulopoulos, and E. Varvarigos
J. Opt. Commun. Netw. 9(1) A85-A98 (2017)

Survivable Multipath Routing of Anycast and Unicast Traffic in Elastic Optical Networks

Róża Goścień, Krzysztof Walkowiak, and Massimo Tornatore
J. Opt. Commun. Netw. 8(6) 343-355 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (8)

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

Contact your librarian or system administrator
or
Login to access OSA 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 OSA member, or as an authorized user of your institution.

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

Equations (15)

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

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