Integrated Design for Backup Capacity Sharing Between IP and Wavelength Services in IP-Over-WDM Networks

Network Slicing is one of the key enabling technologies in 5G networks, as it allows the same network infrastructure to host numerous services, characterized by different Quality of Service (QoS) requirements. Network slicing provides greater flexibility when assigning resources to virtual networks (VNs, or, equivalently, "network slices"), allowing to meet very diverse service requirements. However, network slicing also brings numerous challenges in terms of management of network resources. Among these, service reliability is one of the most important, especially in light of the rising importance of ultra-reliable services in 5G. In this study, we investigate the Survivable Virtual Network Mapping (SVNM) problem focusing on double-link failures. SVNM against double-link failures can be guaranteed enforcing appropriate SVNM constraints, but this approach requires excessive redundant capacity.Capacity sharing represents a more capacity-efficient solution to ensure survivability against double-link failures. Hence, we propose a new SVNM strategy that allows capacity sharing across different virtual networks in case of double-link failure. To evaluate benefits of the proposed technique we categorize six different SVNM scenarios (with and without capacity sharing, jointly applied with SVNM or not) and formalize them through Integer Linear Programming (ILP) models. Results show that the proposed technique for SVNM with capacity sharing enables availability gains (up to about 29%) over traditional SVNM against single-link failures and significant capacity savings (up to about 50%) over SVNM against doublelink failures. The advantages are more significant for increasing number of virtual networks.

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“…In Refs. [4], [5], authors propose ILP models and heuristic approaches for SVNM in IP-over-WDM networks. In Ref.…”

Section: Related Workmentioning

confidence: 99%

“…In Ref. [5], authors use SVNM to guarantee VN survivability against single-link failures considering backup capacity sharing between connections at the IP and optical layer. Refs.…”

Section: Related Workmentioning

confidence: 99%

Survivable Virtual Network Mapping against Double-Link Failures Based on Virtual Network Capacity Sharing

Viadana

Ayoub

Musumeci

et al. 2021

2021 17th International Conference on Network and Service Management (CNSM)

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“…In [21] network services are divided to IP and "wavelength" (WL), where the WL services are optically protected. In order not to waste the bandwidth of the optically protected services, the authors propose using the bandwidth to carry IP traffic even before a failure.…”

Section: B Survivabilitymentioning

confidence: 99%

A survey of multi-layer network optimization

Rožić

Klonidis

Tomkos

2016

2016 International Conference on Optical Network Design and Modeling (ONDM)

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“…Similar to [3], Vadrevu et al [22] also proposed ILPs and heuristics addressing survivability and reroutability for logical links with backup capacity sharing after any single physical link failure.…”

Section: Related Workmentioning

confidence: 99%

Cross-Layer Network Survivability Under Multiple Cross-Layer Metrics

Zhou¹,

Lin

Thulasiraman

et al. 2015

J. Opt. Commun. Netw.

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Abstract-Given a cross-layer network with logical and physical topologies, the survivable logical topology routing problem is to route each link in the logical layer with a path in the physical topology between the end nodes of a logical link such that the logical topology remains connected after a physical link fails. The Mixed-Integer Linear Programming (MILP) formulation to determine such a routing has been considered in a recent paper [1]. Using this formulation as a basic building block, in this paper we present unified MILP formulations to determine a survivable logical topology routing that also satisfies one of four cross-layer metrics: (1) minimizing the number of logical links to be added to guarantee the existence of survivable logical topology routing; (2) maximizing the capacity of the logical topology; (3) maximizing the connectivity of the logical topology after a physical link failure; and (4) maximizing the minimum crosslayer cut. We also provide heuristics for these problems and compare the performance of these heuristics and MILPs using extensive simulations.

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Integrated Design for Backup Capacity Sharing Between IP and Wavelength Services in IP-Over-WDM Networks

Cited by 12 publications

References 9 publications

Survivable Virtual Network Mapping against Double-Link Failures Based on Virtual Network Capacity Sharing

Survivable Virtual Network Mapping against Double-Link Failures Based on Virtual Network Capacity Sharing

A survey of multi-layer network optimization

Cross-Layer Network Survivability Under Multiple Cross-Layer Metrics

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