Content Comparison

• SO-ETSI-VNFM Adapter for Dublin Presentation slide deck at ONAP Paris 2019

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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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      • Design
        • VNFM Adapter sends a POST request to the Task resource that represents the lifecycle operation to be executed on the VNF instance, and includes in the payload body a data structure of type InstantiateVNFRequest (VNFM Adapter → VNFM); POST ../vnf_instances/{vnfInstanceId}/instantiate
        • VNFM Creates a "VNF LCM operation occurrence" resource for the request (VNFM → VNFM Adapter)
        • VNFM returns a "202 Accepted" response with an empty payload body and a "Location" HTTP header that points to the new "VNF LCM operation occurrence" resource (VNFM → VNFM Adapter); .../vnf_lcm_op_occs/{vnfLcmOpOccId}
        • VNFM sends to the VNFM Adapter a VNF lifecycle management operation occurrence notification to indicate the start of the lifecycle management operation occurrence with the "STARTING" state
        • VNFM and VNFM Adapter exchange granting information (see Granting section)
        • VNFM sends to the VNFM Adapter a VNF lifecycle management operation occurrence notification to indicate that the VNF LCM operation occurrence enters the "PROCESSING" state
        • VNFM Adapter polls the "VNF LCM operation occurrence" resource to obtain information about the ongoing operation by sending a GET request to the resource that represents the VNF LCM operation occurrence.
        • VNFM returns to the VNFM Adapter information of the operation, such as the operation status, by providing in the payload body a data structure of type "VnfLcmOpOcc"
        • VNFM has finished the operation <<Operation>>
        • VNFM sends a VNF lifecycle management operation occurrence notification to VNFM Adapter to indicate the completion of the lifecycle management operation occurrence with the success state "COMPLETED"

        • Parameters and data source

          Parameter	Required?	Data Source	Note
          flavorId	Optional	From user input or from the VNFD	This parameter is optional for NBI but it is mandatory for southbound. The value from the user; otherwise it takes the default value from VNFD
          instantiationLevelId	Optional	From VNFD
          extVirtualLinks	Optional	From preload data or user input	The user input requires UI enhancement - See below for design proposal If the external connection point ip_address_assignment is set to false, extVirtualLink is not necessary since the ip address is set by VIM dynamically.
          extManagedVirtualLinks	Optional	from user input	Externally-managed internal VL; Not supported in Dublin
          vimConnectionInfo	Optional	From AAI	In Dublin, the direct resource mode is supported, that means all the VIM resources are created directly by VNFM
          localizationLanguage	Optional		Not supported in Dublin
          additonalParams	Optional	From VNFD	It is a mechanism to pass vendor-specific parameters

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• • • • • extVirtualLinks data population
          • VNFD does not define external virtual links, but it lists the external virtual links as requirements for the VNF.
          • If the connection point ip_address_assignment is set to false, no extVirtualLinks ip address assignment is necessary.
          • In this case, VIM will assign IP addresses dynamically.
          • This could be an option for the Dublin release for simplifying the solution.

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    • Terminate VNF

      • HTTP Method Type: POST

      • VNFM Endpoint: /vnf_instances/{vnfInstanceId}/terminate

      • Request Payload: TerminateVnfRequest

      • Response Header: 202 success

      • Response Body: not applicable

      • Design
        • VNF precondition = INSTANTIATED state
        • After the operation, VNF state = NOT_INSTANTIATED 
        • VNFM Adapter sends a POST request to the Task resource that represents the lifecycle operation to be executed on the VNF instance, and includes in the payload body a data structure of type TerminateVNFRequest (VNFM Adapter → VNFM); POST ../vnf_instances/{vnfInstanceId}/terminate
        • VNFM Creates a "VNF LCM operation occurrence" resource for the request (VNFM → VNFM Adapter)
        • VNFM returns a "202 Accepted" response with an empty payload body and a "Location" HTTP header that points to the new "VNF LCM operation occurrence" resource (VNFM → VNFM Adapter); .../vnf_lcm_op_occs/{vnfLcmOpOccId}
        • VNFM sends to the VNFM Adapter a VNF lifecycle management operation occurrence notification to indicate the start of the lifecycle management operation occurrence with the "STARTING" state
        • VNFM and VNFM Adapter exchange granting information (see Granting section)
        • VNFM sends to the VNFM Adapter a VNF lifecycle management operation occurrence notification to indicate that the VNF LCM operation occurrence enters the "PROCESSING" state
        • VNFM Adapter polls the "VNF LCM operation occurrence" resource to obtain information about the ongoing operation by sending a GET request to the resource that represents the VNF LCM operation occurrence.
        • VNFM returns to the VNFM Adapter information of the operation, such as the operation status, by providing in the payload body a data structure of type "VnfLcmOpOcc"
        • VNFM has finished the operation <<Operation>>
        • VNFM sends a VNF lifecycle management operation occurrence notification to VNFM Adapter to indicate the completion of the lifecycle management operation occurrence with the success state "COMPLETED"
        • Note: its communication exchange pattern is the same as the Instantiate VNF.

        • Parameters and Data source

          Parameter	Required?	Data Source	Note
          terminationType	Yes	from user input
          gracefulTerminationTimeout	Optional	from VNFD	This attribute is only applicable in case of graceful termination. The unit is seconds
          additionalParams	Option	from VNFD

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• • • Delete VNF (Stretch Goal in Dublin)

      • HTTP Method Type: DELETE

      • VNFM Endpoint: /vnf_instances/{vnfInstanceId}

      • Request Payload: not applicable

      • Response Header: 204 success

      • Response Body: not applicable

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