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A variety of use cases are investigated to provide an illustration of how different types of architectures can be mapped to this flexible OAV reference blueprint or TM Forum's Open Digital Architecture (ODA). The use cases include a number of NREN architectures from very diverse environments with varying internal processes and workflows and show how they would identify structures and elements to group them within the ODA functional blocks.

Other use case examples include commercial (5G) and research-based architectures (TALENT) and show how they can make use of this reference architecture.




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Info
titleInterested in what ODA could do for you?

Let us provide you with a mapping of your own organisation’s architecture to ODA! Simply contact us at oav-training@lists.geant.org and we will work with you and provide you more details on how this approach based on functional blocks could streamline your workflows and make your systems more agile and efficient for easy automation.



NREN Architectures

Analysing NREN architectures from an orchestration, automation and virtualisation (OAV) point of view using a common reference architecture helps align efforts, and find similarities in the way different functionalities and components are implemented, which in turn facilitates potential collaboration between organisations and future interoperability. In pursuit of this goal, the GN4-3 Network Technologies and Services Development Work Package (WP6), Network Services Evolution & Development task (T2) selected the TM Forum Open Digital Architecture (ODA) as a reference blueprint architecture that can be used for such cross-comparison. The rationale for that choice is described in Deliverable D6.6: Transforming Services with Orchestration and Automation and in the White Paper: OAV Architectures.

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CYNET


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CYNET OAV Architecture Analysis

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 GÉANT Whitepaper December 9, 2020


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This document undertakes an analysis of CYNET’s network architecture components. It does so by comparing the current status to the TM Forum’s Open Digital Architecture (ODA), which is the reference architecture selected by the GN4-3 project’s Orchestration,Automation and Virtualisation (OAV) focus group within the Network Technologies and Services Development Work Package. The analysis can help to further develop the potential for CYNET to be compatible with future OAV multi-domain processes and workflows throughout Europe.


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CYNET is Cyprus' National Research and Education Network. It provides a network infrastructure for the Cypriot Research and Education Community and connects educational and research institutions. CYNET-II, the national backbone of CYNET, is connected to the European backbone GÉANT which is part of the world-wide community of research and education networks. Because Cyprus is a small island, CYNET is a National Research and Education Network (NREN) that serves only a few universities (around 17) which has so far allowed its workflows to be mainly non-automated processes. However, although CYNET is currently only at the beginning of its journey into Orchestration, Automation and Virtualisation (OAV), going forward the organisation would like to do more to benefit from adopting OAV principles, and to make sure it is compatible with future OAV multi-domain processes and workflows throughout Europe.


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CARNET


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CARNET OAV Architecture Analysis

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 GÉANT Whitepaper June 16, 2021


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The document analyses the mapping of the CARNET architecture to the TM Forum’s Open Digital Architecture aiming to provide a standardised view of the components and implementations of orchestration, automation and virtualisation within the NRENs.


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In this document the team reports on an analysis of the different functional aspects of the CARNET network management system architecture, and how their components map to the ODA reference model.The mapping highlights the main characteristics and capabilities of the current CARNET network architecture, and how they fit into the main functional domains of ODA. The analysis was carried out by the network architects supported by the WP6T2 team.


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HEAnet


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HEAnet OAV Architecture Analysis

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 GÉANT Whitepaper October 20, 2021


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The document analyses the mapping of the HEAnet architecture to the TM Forum’s Open Digital Architecture, aiming to provide a standardised view of the components and implementations of orchestration, automation, and virtualisation within the National Research and Education Networks (NRENs).


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In this document the team reports on an analysis of the different functional aspects of the HEAnet service management architecture, and how their components map to the ODA reference model. The mapping highlights the main characteristics and capabilities of the current HEAnet architecture, and how they fit into the main functional domains of ODA. The analysis was carried out in July 2021 by the WP6T2 team, supported by HEANet network architects.


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SURF


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SURFnet OAV Architecture Analysis

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 GÉANT Whitepaper December 9, 2020


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This document analyses the mapping of the SURFnet architecture to the TM Forum’s Open Digital Architecture, as part of the GN4-3 project’s ongoing activity in the Network Technologies and Service Development’s work package to provide a standardised view of the components and implementations of orchestration, automation and virtualisation within the NRENs. Overall, it can be concluded that the SURFnet OAV architecture, although independently developed, is very much aligned to the ODA’s core principles and design concepts.


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Using a common reference architecture to analyse NREN architectures from an orchestration, automation and virtualisation (OAV) point of view helps align the NRENs’ efforts and find commonalities in the way they implement different functionalities and components. To this end, the GN4-3 WP6 Network Technologies and Services Development OAV team has selected the TM Forum Open Digital Architecture (ODA) to be used as a reference blueprint architecture for cross-comparison. This document presents an analysis performed by the WP6 OAV team of the different functional aspects of the SURFnet network architecture, mapping its components to the TM Forum ODA. The mapping highlights the main characteristics and functionalities of the current SURFnet network architecture and how they fit into the main functional domains of ODA.


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Other Use Cases

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5G


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5G is a mobile technology that is addressing, by design, a broad range of requirements: very high data rates, very low latency, low energy consumption, high scalability, improved connectivity and reliability, and improved security [FGPPP18], [FGPPP20]. The 5G specifications focus on serving mobile operator needs in terms of extreme mobile broadband services and include several features to support vertical industries in terms of enablers for an industrial Internet of Things (IoT)and Ultra Reliable Low Latency Communications(URLLC)[FGPPP20]. Within the 5G system, end-to-end (E2E) network slicing, service-based architecture, Software-Defined Networking (SDN) and Network Functions Virtualisation (NFV) are seen as the fundamental pillars of the 5G architecture.  Read more...


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TALENT


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Terrestrial Satellite Resource Coordinator (TALENT) is a coordination tool which provides end-to-end services over satellite domain, radio system, cloud and Mobile Edge Computing (MEC) resources [TAL19]. It provides a single and easy-to-use point of interaction for all stakeholders involved in the ecosystem, such as terrestrial and satellite operators as well as different 5G verticals. TALENT is completely inline with 3GPP and ETSI definitions, extending them towards satellite systems.The original idea of TALENT is based on the definition of hierarchical and distributed orchestration [HDO17], where an overarching orchestrator is able to manage and coordinate several independent domains (satellite, radio and cloud). It is assumed that a domain manager (DM) exists in each domain that can work with the resources of this domain. In this sense TALENT becomes a light, scalable and efficient solution, agnostic to elementsof domains coming from various vendors.Read more...


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References:

[FGPPP18]   5GPPP Architecture Working Group View on 5G Architecture, v2.0, Jan 2018 https://5g-ppp.eu/wp-content/uploads/2018/01/5G-PPP-5G-Architecture-White-Paper-Jan-2018-v2.0.pdf

[FGPPP20]   5GPPP Architecture Working Group View on 5G Architecture, v3.0, Feb 2020 https://5g-ppp.eu/wp-content/uploads/2020/02/5G-PPP-5G-Architecture-White-Paper_final.pdf

[HDO17]      J. S. Choi, “Hierarchical Distributed Orchestration Framework for Multi-Domain SDTNs”, Journal of Optical Communication and Networking, vol. 9, no. 12, pp. 1125-1135, 2017 https://www.osapublishing.org/abstract.cfm?uri=jocn-9-12-1125

[TAL19]        H. Khalili, P. S. Khodashenas, D. Guija and S. Siddiqui, “Introducing Terrestrial Satellite Resource Orchestration Layer”, 21st International Conference on Transparent Optical Networks (ICTON), 2019, pp. 1–4, doi: 10.1109/ICTON.2019.8840562 https://ieeexplore.ieee.org/abstract/document/8840562/