Enabling Network Slicing Across a Disaggregated Optical Transport Network

Network slicing has been a major selling point of 5G networks, where a slice is roughly defined as a self-contained logical network on top of a shared infrastructure tailored for a specific service or vertical industry, composed of heterogeneous resources (computing, storage, bandwidths) and typically involving specific application and/or networking functions. The relationship between the network slicing and the underlying network virtualization is an open research topic, allowing multiple deployment models. In particular, a specific model of interest involves the virtualization of the optical infrastructure, where optical virtual networks are instantiated in support of network slicing, so the virtual network underlies and provides connectivity to component functions of a network slice. In this paper, we propose and implement a network virtualization architecture for open optical (partially) disaggregated networks, based on the concept of a device hypervisor relying on OpenROADM data models, in support of 5G network slicing over interconnected network function virtualization infrastructure points of presence (NFVI-PoPs). The architecture is experimentally validated, showing the provisioning of ITU-T flexigrid network media channels across a virtualized network.

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“…This paper extends the contribution presented in OFC2019 [13]. The main extensions in this paper are as follows.…”

Section: ) We Extend the Onos Sdn Controller With Openconfig Andsupporting

confidence: 56%

Virtualization of disaggregated optical networks with open data models in support of network slicing

Casellas

Giorgetti

Morro³

et al. 2019

J. Opt. Commun. Netw.

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“…A key advantage is that with full virtualization support, the SDN controller and other functional elements may operate without change, unaware of whether they operate on virtualized of physical devices. It relies on the concept of OpenROADM hypervisor [7]. Conceptually, it behaves like a hypervisor in the computing domain: a hypervisor is a functional element (e.g.…”

Section: B Virtualizing the Networkmentioning

confidence: 99%

“…Finally, the need to virtualize the transport network has emerged as a key requirement to support functions such as network slicing and empower end users or to control the allocated partitions [5]- [7]. Tenants are given abstracted topology views of the physical underlying network and are allowed to utilize and independently control allocated virtual network resources as if were real.…”

Section: Introductionmentioning

confidence: 99%

Abstraction and Control of Multi-Domain Disaggregated Optical Networks With OpenROADM Device Models

Casellas

Martínez

Muñoz

2020

J. Lightwave Technol.

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“…The proposed reference network is aligned with the ODTN project phase II [7], and corresponds to a partially disaggregated network [8]. In Figure 3 (left), an example of an OpenROADM device model is presented, which consist on 3 DEG and 2 SRGs.…”

Section: Figure 3 (Left) Sample Openroadm Device With 3 Deg and 2 Srgmentioning

confidence: 99%

“…Figure 3 (right) shows an example of connectivity service request, which includes the requested end-points (with references to service-interface-points), the requested capacity for the connectivity service and the service type. This connectivity service request, which is received by ONOS SDN controller, is translated in the necessary NETCONF operations towards OpenConfig and OpenROAMD models, as described in [8].…”

Section: Figure 3 (Left) Sample Openroadm Device With 3 Deg and 2 Srgmentioning

confidence: 99%

End-to-End Network Service Deployment over Multiple VIMs Using a Disaggregated Transport Optical Network

Vilalta

Cruz

Alemany

et al. 2019

2019 21st International Conference on Transparent Optical Networks (ICTON)

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5GPPP 5GTANGO project has extended SONATA NFV platform in order to be used to deploy network services over multiple Virtualization Infrastructure Managers (VIM), which are interconnected through one or multiple WAN Infrastructure Manager(s) (WIM). In this paper we present a WIM, developed in the context of 5GPPP METRO-HAUL, which is responsible for tackling the necessary connectivity services in order to interconnect the multiple NFV Infrastructure Points-of-Presence (NFVI-PoP). In this paper, we propose to use ONF Transport API (T-API) as WIM NBI, with the purpose to control the underlying optical disaggregated network. Using this interface, SONATA NFV platform requests the necessary connectivity through its novel T-API plugin.

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Enabling Network Slicing Across a Disaggregated Optical Transport Network

Abstract: We propose and implement a network virtualization architecture for open optical (partially) disaggregated networks, based on a device hypervisor and OpenConfig and OpenROADM data models, in support of 5G network slicing over interconnected NFVI-PoPs.

Cited by 5 publications

References 3 publications

Virtualization of disaggregated optical networks with open data models in support of network slicing

Virtualization of disaggregated optical networks with open data models in support of network slicing

Abstraction and Control of Multi-Domain Disaggregated Optical Networks With OpenROADM Device Models

End-to-End Network Service Deployment over Multiple VIMs Using a Disaggregated Transport Optical Network

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