Content Comparison

• Resource commitment:

  • Ericsson: primary contact: Byung-Woo Jun

• Usecase Lead:

  • Ericsson: Byung-Woo Jun

• TSC Contact:

  • Ericsson: Stephen terrill

• Participating ONAP Projects:

  • Implementation: SO, AAI, SDC (not in Dublin)

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• • Leverage ETSI standards for VNF LCM in SO

  • Build SO VNFM Adapter

    • Use SOL003 APIs (2.5.1) for VNF LCM

    • Support operations such as create, instantiate, grant, query, terminate, LCN subscription and LCN

    • Support of Delete VNF is a stretch goal in Dublin

  • Enhance SO BPMN workflows & recipes

    • VNF-level and VF-Module workflows, leveraging VNFM Adapter 

    • Passing VNF LCM requests to VNFM using VNFM Adapter

• Note: the following is candidates for the El Alto release.

  • Provide VNF package management for VNFM

  • Policy-based VNF scaling thru VNFM Adapter

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• • A new SO sub-component, following ONAP Microservice Architecture

  • A Generic VNFM Adapter, supporting SOL003-compliant SVNFMs

  • Support of SOL003 APIs for VNFM LCM
    • VNF Package handling (Download & Parse VNF Package)
      • Get package files from the SDC repository thru SO
      • Provide VNF package(s), VNFDs and Artifacts to VNFM
      • SO Catalog DB enhancement for SOL001/SOL004 is identified as future release work
    • Invoking SVNFM based on SOL003 VNF LCM APIs as a client

      • use https://forge.etsi.org/gitlab/nfv/SOL002-SOL003/2.5.1/master/src/SOL003/VNFLifecycleManagement swagger to generate a client

      • support Create VNF, Instantiate VNF, Query, Terminate VNF operations as a client

      • collect data for SOL003 API parameters from SDNC, A&AI and OOF (for models with homing)

    • Granting, based on ETSI VNFLifecycleOperationGranting

      • use https://forge.etsi.org/gitlab/nfv/SOL002-SOL003/tree/master/src/SOL003/VNFLifecycleOperationGranting swagger to generate grant services

      • Grant decisions based on the data either from 1) OOF (based on location, inventory data, resource availability, business rules, etc.) or 2) VIM registration, cloud region, etc. 

    • Subscription to SVNFM for getting notifications
      • STARTING, PROCESSING, COMPLETED
  • SVNFM selection based on configuration values that are configured during VNF on-boarding and VNFM registration. Two methods are considered:
    • Correlation between VNF NF Type and VNFM Type (Nokia method)
    • Utilizing VNFD vnfm_info:type, VNFM registration values: VNFM type, Cloud region, vendor

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• • Vendor SVNFM must be "SOL003-compliant"
  • Providing SOL003 APIs for VNFM LCM, based on ETSI VNFLifecycleManagement
    • Use https://forge.etsi.org/gitlab/nfv/SOL002-SOL003/2.5.1/master/src/SOL003/VNFLifecycleManagement swagger for providing services
    • Create
    • Instantiate
    • Query
    • Grant request to SO VNFM Adapter, as a client
    • Life cycle notification
    • Terminate
  • Registration itself to ONAP (thru A&AI ESR) - Name, Type, Vendor, Version, URL, VIM, Username and Password
  • Providing Subscription Services for Life-cycle Management Notifications
  • Support of the "Direct Mode" of Resource Management only
    • After receiving a grant permission, the VNFM sends requests for resources directly to VIM
    • Invoking MultiCloud from VNFM is under discussion, but not for Dublin
    • The "Indirect Mode" of Resource Management is being discussed, but not for Dublin

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• SOL001/SOL004 Standard Conformance

  • VNF Package

    • A VNF Package is a compressed file that contains the following:
      • One VNF descriptor (VNFD)
      • One or more Software Image files
      • Zero or more manifest files
      • Other files

    • Package structure is SOL004 2.5.1 compliant.

  • Cloud Service Archive (CSAR) format

    • It is a packaging construct defined in SOL004 2.5.1, identified by a .csar suffix on the package file. There are two package options. The second option is supported.

    • The CSAR file does not contain TOSCA-Metadata directory, the descriptor yaml file is in the root directory of the CSAR.

    • The CSAR file contains TOSCA-Metadata directory, the TOSCA meta file in this directory contains the location and name of the descriptor file denoted by Entry-Definitions

  • VNFD

    • It is specified by the SOL001 2.5.1.

    • Note that the input and get_input function would be used by a TOSCA orchestrator at run time to access the selected input parameter. If the deployment is not done by a TOSCA orchestrator, the inputs and get_input function may not be needed. The VNFD design should follow the vendor SVNFM orchestration capabilities. 

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• Use Cases

• Choose a use case for demonstrating the VNFM Adapter capabilities

• Testing

• • Ericsson Internal Test:
    • A vendor provides their VNF Package and SVNFM for managing the vendor-specific VNF package. 
    • For the SO VNFM Adapter NBI and SOL003-SBI interface validation, Ericsson SVNFM is used for the internal testing
  • Integration Test:
    • For the integration testing, generic/dummy VNF package and VNFM simulator are provided.
    • The generic/dummy VNF package is to test onboarding and SOL001 parameters extraction during SOL003-based API parameters, such as descriptor_id, flavor, etc. 
    • VNFM simulator is a vendor-neutral SOL003-compliant VNFM, which supports SOL003 responses and message exchanges.

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• VNFM Adapter Sub-components

  
  

  

• • SO VNFM Adapter component is a sub component of SO; utilizing docker image and container manged.
    • North Bound Interface (NBI)
      • RESTful APIs that support createVnf, instantiateVnf, queryVnf, grantVnf, TerminateVnf
      • Its APIs are SO specific; i.e., not SOL003-based ones
    • Business Logic layer
      • It is invoked by the NBI and provides business logic for createVnf, instantiateVnf, queryVnf, terminateVnf
      • SDNC and A&AI access to collect assignment and VimConnectionInfo
      • Accesses SdcPackageProvider for getting SOL003 package(s) and parameters
      • SdcPackageProvider
        • Supports SOL001/SOL004 package management
        • Provides getPackage, getVnfdId, getFlavorId, getVnfNodeProperty
        • Provides getPackage(s), getVnfd, getArtifactFile for SVNFM
        • Uses SDC Tosca Parser
      • GrantManager
        • Provides requestGrantForInstantiate REST API for SVNFM
        • Invokes OOF for homing decision; HPA support, and/or non-OOF decision
      • SOL003Lcn APIs
        • Supports VnfIdentifierCreationNotification, VnfIdentifierDeletionNotification, VnfLcmOperationOccurrenceNotification
    • SOL003 Communication Layer
      • It is a thin REST client layer, which sends SOL003-compliant requests to SVNFMs and receives responses/notifications from SVNFM.
      • For Grant, it provides the Grant REST endpoint for
SVNFMs.
• • • • SVNFM

  
  

• SOL001/SOL004 Support & Design

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Note: SO future release could consider SOL001/SOL004 internal representation in its Catalog DB, or using the Run-time Catalog DB

• Design

• • TBD

• VNFM Adapter VNF Flow Design

  • The following diagram depicts VNF flow design.

• VNFM Adapter Run-time Scenarios

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