Network Virtualization Over Elastic Optical Networks With Different Protection Schemes

K. D. R. Assis; S. Peng; R. C. Almeida; H. Waldman; A. Hammad; A. F. Santos; D. Simeonidou

doi:10.1364/JOCN.8.000272

Network Virtualization Over Elastic Optical Networks With Different Protection Schemes

K. D. R. Assis, S. Peng, R. C. Almeida, H. Waldman, A. Hammad, A. F. Santos, and D. Simeonidou

Journal of Optical Communications and Networking
Vol. 8,
Issue 4,
pp. 272-281
(2016)
•https://doi.org/10.1364/JOCN.8.000272

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K. D. R. Assis, S. Peng, R. C. Almeida, H. Waldman, A. Hammad, A. F. Santos, and D. Simeonidou, "Network Virtualization Over Elastic Optical Networks With Different Protection Schemes," J. Opt. Commun. Netw. 8, 272-281 (2016)

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The topics in this list come from the OSA Optics and Photonics Topics applied to this article.
Previously assigned OCIS codes
- Networks, network optimization (060.4256)
- Networks, network survivability (060.4257)

About this Article
History
- Original Manuscript: December 18, 2015
- Revised Manuscript: February 28, 2016
- Manuscript Accepted: February 29, 2016
- Published: April 1, 2016

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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.

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Case I ( $z^{1}$ , $z^{2}$ , and $z^{3}$ )	Case II ( $z^{1}$ , $z^{2}$ , and $z^{3}$ )	Case III ( $z^{1}$ , $z^{2}$ , and $z^{3}$ )	Case IV ( $z^{1}$ , $z^{2}$ , and $z^{3}$ )

Protection Schemes	VON	$α (z)$	$β (z)$
DP (Dedicated protection) DPP for $z^{1}$ , $z^{2}$ , and $z^{3}$	$z^{1}$	1	0
	$z^{2}$	1	0
	$z^{3}$	1	0
MP (Multiple protection) DPP for $z^{1}$ , $DPP + S$ for $z^{2}$ , and Nonprotection for $z^{3}$	$z^{1}$	1	0
	$z^{2}$	0	0.5
	$z^{3}$	0	1
NP (No protection) Nonprotection for $z^{1}$ , $z^{2}$ , and $z^{3}$	$z^{1}$	0	1
	$z^{2}$	0	1
	$z^{3}$	0	1

				Heuristics
	MILP Formulation			VON-SF			BLSA-P			SPSR-P
Cases	NP	MP	DP	NP	MP	DP	NP	MP	DP	NP	MP	DP
$I$	21	41	59	27	48	72	30	64	120	41	68	120
	Avr. Gap:			5.3%			20.6%			31.3%
II	40	57	91	41	68	111	42	68	120	64	108	180
	Avr. Gap:			13%			15.3%			44%
III	24	58	74	24	58	76	26	68	90	40	68	90
	Avr. Gap:			1%			10%			24%
IV	36	68	103	37	73	111	42	72	110	42	96	150
	Avr. Gap:			4.2%			9%			27%

Protection Schemes	VON	$α (z)$	$β (z)$
MP2 (Multiple protection) $PDPP + S$	$z^{1}$	0.5	0.25
	$z^{2}$	0.5	0.5
	$z^{3}$	0.5	0.75

Protection Schemes	VON	$α (z)$	$β (z)$
DP (Dedicated protection–Case I) DPP for $z^{1}$ , $z^{2}$ , and $z^{3}$	$z^{1}$	1	0
	$z^{2}$	1	0
	$z^{3}$	1	0
MP (Multiple protection–Case II) $PDPP + S$ for $z^{1}$ , $z^{2}$ , and $z^{3}$	$z^{1}$	0.5	0.3
	$z^{2}$	0.5	0.4
	$z^{3}$	0.5	0.5
MP (Multiple protection–Case III) $PDPP + S$ for $z^{1}$ , $z^{2}$ , and $z^{3}$	$z^{1}$	0.5	0.6
	$z^{2}$	0.5	0.7
	$z^{3}$	0.5	0.8
MP (Multiple protection–Case IV) $PDPP + S$ for $z^{1}$ , $z^{2}$ , and $z^{3}$	$z^{1}$	0.5	0.3
	$z^{2}$	0.5	0.5
	$z^{3}$	0.5	0.8

Abstract

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