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Specialist Task Force 570:
Information Model for NFV

Who we are:

Team leader:
Team Members:

What we do

This STF is focused on maintaining the DGR/IFA015 NFV Information Model specification in order to keep it aligned with the ongoing work on related ETSI NFV releases. The Information Model provides a consolidated view on all information elements present in the descriptors and interface specifications. Such consolidated view enables a quick identification of gaps and inconsistencies in the implementations of the standard. The Information Model is an important tool for ensuring the consistency among specifications. Within this STF, we will update the NFV information model and publish a new version of the information model in Papyrus and the associated GenDoc document. Additionally, the accompanying UML® Modelling Guidelines and Papyrus Guidelines, i.e. DGR/NFV-IFA016 and DGR/NFV-IFA017 will be maintained and updated as necessary as well.

For more details, see our Terms of Reference

Why we do it

Having a consolidated Information Model in a machine-readable format eases the sharing of the model with external SDO’s. Using tools commonly applied in the broader community, facilitates other SDOs and open source projects to use ETSI NFV Information Model as a basis, as it is easy to build on top of it.

There are more than 14 different NFV-IFA specifications that provide input to the information model, and the size of the model has grown to more than 160 classes, 200 datatypes and 200 associations. It is expected that the number of entries to the model will increase in Release 3 as new NFV features are specified. To continue to be useful, the Information Model needs to be maintained and aligned with changes in the related specifications. On the other, hand it also provides means to check the consistency and validity of new features and changes added to the related specifications.

The ETSI NFV specifications are referenced and/or used by operators, vendors and open source communities involved in NFV deployments. The availability of the ETSI NFV Information Model representation is essential for the quick development of high-quality specifications and for making ETSI NFV the industry reference for management and orchestration standards. Furthermore, it also helps faster adoption of ETSI specifications by other standards organizations and open source projects as it offers a well-defined “entry point” to understand the relationship among the different concepts, artefacts, functionality, interfaces, etc specified by ETSI NFV.

How we do it

The work of the STF will be presented and discussed at NFV ISG meetings and with a dedicated steering committee. Maintenance versions of IFA GSs are typically revised and approved every six months. Therefore, several draft versions of the Information Model will be provided and discussed during IFA conference calls before publication, in order to identify potential misalignments and be able to take timely corrective actions and coordinate with the work on other related NFV-IFA specifications. Relevant outcomes will be disseminated at workshops, conferences, and other events.
ETSI GR NFV-IFA 016 v3.2.1 and ETSI GR NFV-IFA 017 v3.2.1 do not have a pre-defined maintenance schedule. Maintenance of these specifications will only be needed if there is any change in the guidelines. As those guidelines are shared between ETSI NFV and other organizations, any needed changes will be shared with those organizations as well.

Deliverables

The deliverables for the STF comprise an updates to GR NFV-IFA 015, as well as GR NFV-IFA 016 and GR NFV-IFA 017:
ETSI GR NFV-IFA 015 v3.3.1 and v3.4.1 conduct NFV Release 3 maintenance, correcting errors, ambiguities, misalignments, and applying editorial modifications.
ETSI GR NFV-IFA 016 v3.2.1 and ETSI GR NFV-IFA 017 v3.2.1 build upon the internal NFV Papyrus and UML modelling guidelines, respectively, aiming at closer alignment with corresponding UML modelling guidelines from ONF and may be influenced by other partners cooperating with NFV (informative).

Time plan

The work of the STF is organised around two major milestones for approval in October 2019 (ETSI GR NFV-IFA 015 v3.3.1) and February 2020 (ETSI GR NFV-IFA 015 v3.4.1).
Early drafts of the deliverables will be provided for discussion at two additional interim milestones in June 2019 and November 2019.

How to contact us

For further details, or if you wish to be involved in the work of the STF, please contact the STF Leader: Philip Makedonski

This information is based upon STF working assumptions.

The views expressed do not necessarily represent the position of ETSI in this context.