This page hosts information about discussion calls dedicated to service modeling during R2 release cadence.

More information about ongoing work targeting R3+ is hosted here: ONAP R3+ Service Modeling Discussion Calls

Past calls

20180330

Logistics

Intercontinental Los Angeles Downtown, sponsored by Linux Foundation Network Echo Park Meeting Room 5th floor

Time: 8am-1pm

Meeting room: https://zoom.us/j/882442618

Part of the ONAP Friday morning modeling session in ONS 2018 (30 March 2018)

Agenda

0 Agenda bashing

Service session
1 Yangxu - Service IM Status and Observations
2 John - MEF MCM Proposal
3 Jianguo - ONAP R3 Service IM Proposal
4 Lingli - Service IM Usecase Proposal (Skipped for time limitation)
5 Discussion on next steps

Resource DM session
6 Michael - ONAP R3 Resource DM Proposal Feedback
7 Alex - Kicking off ONAP R2 Resrouce DM Open Issues (Skipped for time limitation)

Onsite Participants

Hui DENG , Xinhui Li, Lingli Deng , Seshu Kumar, Parviz Yegani, Alex Vul , John Strassner , Xu YANG

Anh Le , Thinh Nguyenphu , Michael Lando , Pawel Pawlak , Jianguo Zeng , Stephen Terrill , Seshu Kumar

Tal Liron, Yoav Kluger, Catherine Lefevre

Meeting minutes

1) R2 service modeling will be the same as R1 servcie modeling which is confirmed by SDC/SO/HPA/VNFSDK/AAI/VFC

2) R2 resource modeling will be based on clean version of wiki page, but will only implment part of the request from the use case

3) R3 DT resource DM have critical issue whether we are going to improve R2+ model or redesign a new DM for R3+

4) ONAP service model is broder than ETSI Network Service

5) Product/Offer is out of the scope of ONAP service model

6) The workshop made the following concensused suggestion:   

  • Cardiality correction by John
  • Suggest to move to composite pattern  instead of recursive aggregation   
  • Decoration pattern is FFS   
  • Terminology need to be defined (e.g. clarifications on service component as with the one in MEF)

20180325

Agenda

  • ONAP R2+ service IM Discussion Review and Proposal

Service IM layering framework (Lingli Deng)

  • SDO Persptive

MEF (Jack Pugaczewski)

TMF (John Wilmes)

ONF (Nigel Davis)

  • ONAP R3 Service IM Proposals

Service Order (Andy/Kevin)   (Skipped as Andy is not online)

Service Component: WAN Service Descriptor (Zhuoyao Huang & Nigel Davis) 

Service Component: Network Service Descriptor (Maopeng Zhang & Thinh)  

  • Priority and Planning Discussion

The current status of service IM and my observations (Xu Yang)  (Skipped for time limitation)
Discussion (Partially covered during the flow of discussion)

Minutes

• ONAP R2+ service IM Discussion Review

• SDO Perspective

• MEF (Jack Pugaczewski) - MEF API Development Approach provides an introduction to MEF LSO and proposed a tooling chain that triggered the discussion of common information model methods and strategies. It was agreed that the ONAP community can be used as a catalyst to promote CIM from vision to implementation between related SDOs of the Radeon. However, the ONAP's own design and implementation of the model is not tied to the existing specification or specification plan of the CIM or any other SDO. The ONAP model work is based on the developers' willingness to contribute, and the development of the version is the iterative design and organization cycle of the discussion. MEF models are still evolving and featured with the model-driven approach and usage of decorator pattern.

• TMF (John Wilmes) The advantage of staying compatible with the legacy systems is highlighted from TMF SID modeling proposal. A mapping analysis of the ETSI NFV IFA model to the TMF SID in terms of the ETSI NFV vCPE use case is proviced. It is suggested to supplement the ONAP service scenario with a service-level mapping analysis, add elaboration on the relationship between SID and openAPI, and submit to the next level discussion on Friday Workshop.

• ONF (Nigel Davis) - ONF Modeling introduced the ONF modeling experience, and it is envisioned that the modeling for both resource and service would converge. Specific suggestions for WAN descriptor refinement based on ONF CIM and TAPI were presented. It is recommended that the follow-up continue to discuss the model design refinement offline.

• ONAP R3 Service IM Proposals

  • Service Order (Andy/Kevin) - Skipped for lack of presenter
  • Service Component:
    • Network Service Descriptor (Maopeng Zhang)

      • NSD IM: If no furture comments on the NSD IM are received next week, it will moved into the clean page.

      • NSD DM: R2 NSD Model as resource was discussed. SDC has supported NSD node definition, and more detail is needed discussed with SDC team.Thinh requests to accelerate the NSD data model

    • Service Component: WAN Service Descriptor (Zhuoyao Huang)

      • Nigel suggested 3 options for improvements to ONAP WAN model:  

        Option 1 (Core overlay):  Follow CIM concept, LC/XC is FC, import LTP and Link, node is FD but not NE.

        Option 2 (TAPI overlay):  Follow TAPI concept, LC/XC/FC is connection, FC port and XC point replaced by CEP and NEP, import Topology.

        Option 3 (M.3100 overlay): Change some names for aligning with ONF IM concepts( following ITU-T Recommendation M.3100 ) better and keep the UML class topology of original WAN IM proposal:

        WAN IM

        Nigel suggestion

        Forwarding   Construct

        SNC(Subnetwork   Connection)

        FC Port

        CTP(Connection   Termination Point)

        Node

        SN(Subnetwork)

        FC Route

        SNCRoute(Subnetwork   Connection Route)

        XC Port

        CTP(Connection   Termination Point)


• Priority and Planning Discussion

  • The current status of service IM and my observations (Xu Yang) - delayed due to time limitation
  • Discussion for follow-ups
  • Lingli provides customer-facing business scenarios as input for service model discussion and comparison by Tuesday;
  • For Friday workshop, each presenter (including SDOs/individuals) is expected to provide their respective proposal models and with the context of customer facing business scenario;
  • Based on which, the team is expected to develop a more clearly scoped target and collaborative pattern for R3+.

20180321

Agenda

  • Agenda bashing

  • R2 Status summary and priority

  • ONS workshop agenda

  • R2 VNFD DM clean up discussion (added for R2 priority)
  • Network Service Descriptor R2 Implemenation Discussion
  • Service Order Model (added to the agenda, but deferred to next meeting due to time limit)

Minutes

  • Agenda bashing
    Andy suggested to add service order model to the agenda.
    Hui suggested to add VNFD DM discussion for finalizing R2 spec.

  • R2 Status summary and priority
    Agreed to continue work on nsd for R2 implemenation, and defer WAN descriptor discussion for R3 discussion starting next call.
    And service order proposal to R3 discussion.

  • ONS workshop agenda
    Deng Hui suggest to

    1. Add project PTL to explain how they implement service today SDC, SO, A&AI
    2. YANGXU is presenting the relationship between SERVICE and network service
    3. Multi SDO presentation about service IM , tmf/mef/onap
    4. Offline to build tiger team to design service IM

    Andy suggest to

    1. Add service order model
    2. Further Discuss NS 
  • Network Service Descriptor R2 Implemenation Discussion
    NS model as service component added in the R2.
    Maopeng and Anatoly need to discuss more tosca grammar details related to NS model and update the NS model.
  • Wrap up

20180313

Agenda

Minutes

  • Agenda bashing
    Added a time slot for Network service VL Discussion.

  • WAN service IM/DM Proposal (Zhuoyao)

    • WAN (Service Component) IM
      Need clarifications on relationship with ONF CIM and/or TAPI model.

    • WAN (Service Component) DM
      Need clarificationson relationship with parallel TOSCA Data Modeling practice at ONF and avoid collision if possible (e.g. in terms of naming conventions)

  • Network Service Discussion
    • NetworkService Model Diagram (Maopeng)
      Add reference to IFA 014 2.4.1 when appropriate.       Need sync with SDC/VF-C for implementation plan in R2.
    • Network service VL Discussion  (Nagesha)
      Very briefly done due to time limit. Will provide wiki page contribution and kick off further discussion.
  • Wrap up

Recordings

20180307

Agenda

Minutes

  • Agenda bashing (Lingli)
    No comments received and proceeded with the proposed agenda.

  • Service IM recap and update(Kevin) 
    No update made to the clean version as agreed back in December F2F. (Kevin)
    Concerns raised about potential alignment conflicts with MEF service models, which would be discussed further in March F2F.     (Mehmet and others)

  • Service DM proposal (Maopeng)
    It is clarified that both network service and wan service are derived from service component. The network service as it currently represented is a simplified subset of Network Service as define by ETSI NFV, without VNFFG or Deployment Flavour etc. (Maopeng)
    UML class diagram for corresponding IM design was requested to be added. (Andy)
    More sophisticated design for virtual link might need to be considered for some service provider scenario, contribution to be expected in later discussion. (Thinh)
  • WAN service modeling proposal (Zhuoyao)
    It is recognized as a good approach to proceed, suggest to add consideration for covering both intra-DC connectivity and inter-DC connectivity for underlay. (Gil & Andy)
  • Wrap up
    All participants are encouraged to leave their comments to the wiki discussion pages for further discussion and better tracking.

Recording 




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2 Comments

  1. Michela Bevilacqua

    HI Lingli, all, 

    About the Service IM, I propose to provide to provide a definition of Service and Service Component.


    I´d like also to explore two additional Use Cases with the current service model:

    1) A vIMS (or a vEPC or a WAN) exposed as a Service. What does the service model (both descriptor and instance) add to the vIMS as Service Component? 

    2) A VNF exposed as a Service. What do the service component and service model add to the VNF model? 



    1. Lingli Deng

      For the definition of service and service component, there are statements in the ONAP R2+ Service IM Clean version for your reference. Please let us know if you need refinement/clarfication in including them into the modeling terminology part.

      From my understanding o the current proposals combined. The service component is an abstract class, which is to be impersonate to be either network service or WAN service.

      maopeng zhang  will be a better position to address you questions regarding vIMS as a service and VNF as a service.