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This following is a working draft, and the contents can be changed as needed. The ETSI-based hierarchical orchestration is a concept, and it is not committed for the Guilin release. 

This proposal conforms to the SOL005 and SOL003 v2.7.1 specifications.

• https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/005/02.07.01_60/gs_NFV-SOL005v020701p.pdf
• https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/003/02.06.01_60/gs_NFV-SOL003v020601p.pdf

ONAP SO Hierarchical Orchestration Architecture

Requirements

Support for ETSI NFV NFVO  Orchestrator in ONAP SO (ONAP SO ETSI-Aligned Hierarchical Orchestration)

Executive Summary - Enable E2E workflows by orchestrating ETSI NFV compliant Network Services and VNFs. This NFVO should provide an ETSI NFV SOL005 v2.7.1 NBI which can onboard ETSI NFV SOL004 and ETSI NFV  SOL007 v2.7.1 compliant packages which then can be Life Cycle Managed and monitored. This NFVO should use an ETSI SOL003 v2.7.1 SBI to invoke an external VNF Manager. 

Business Impact - Enables operators and service providers to use Industry standard Orchestration to deploy, manage and monitor network services. Industry compatibility.

Business Markets - All operators and service providers that are developing ETSI compatible Network Services especially for 5G Slicing where each Slice Subnet is associated with a Network Service 

Funding/Financial Impacts - Reduction in operations expense from using industry standard ETSI Orchestration.

Organization Mgmt, Sales Strategies -There is no additional organizational management or sales strategies for this requirement outside of a service providers "normal" ONAP deployment and its attendant organizational resources from a service provider. 

Architecture

Requirements For Guilin

ONAP SO NFVO

Gliffy DiagramnameONAP SO ETSI Hierarchical OrchestrationpagePin18

NFVO Architecture & Functions

The following diagram depicts the NFVO component architecture

Requirements For Guilin

ONAP SO NFVO

ONAP SO NFVO provides ETSI NFV-compliant NFVO functions.

NFVO provides ETSI NFV-compliant NFVO functions.

• Supports the lifecycle of Network Service (NS)
  • Create NS
  • Instantiate NS
  • Terminate NS
  Supports the lifecycle of Network Service (NS)
  • Create NS
  • Instantiate NS
  • Terminate NS
  • Delete NS 
  • Subscription
• Exposes NS lifecycle management interfaces (Os-Ma-Nfvo) to its client such as ONAP SO or SOL005-compliant clients
  • Create NS
  • Instantiate NS
  • Terminate NS
  • Delete NS
  • Subscription
• Sends NS lifecycle management notifications (Os-Ma-Nfvo) to its client such as ONAP SO or SOL005-compliant clients
  • Notification (as a client)
• Manages (as a client) virtualized resources via interfaces (Or-Vi) exposed by the VIM 
  • Software Image
  • Container Image Management (stretch goal)
  • Resource Management, validation and authorization of NFVI resource requests
• Supports Virtual Links, CPs and VNF-FG
  • VLs
  • CPs
  • VNF-FGs (stretch goal)
• Manages (as a client) virtualized resource management interfaces (Or-Vnfm) to the VNFM
  • Leverages the SOL003 Adapter and supports
    • Create VNF
    • Instantiate VNF
    • Terminate VNF
    • Delete VNF
    • Subscription
• Supports virtualized resource management interfaces (Or-Vnfm) to the VNFM
  • Granting VNF with HPA, leveraging OOF 
• Supports VNF lifecycle management notifications (Or-Vnfm) to the VNFM 
  • Notification
• Manages (as a client) SOL004 VNF/PNF and SOL007 NS package management leveraging ETSI Catalog Manager 
  • Queries packages (VNF/PNF/NS)
  • Queries descriptions (VNFD/PNFD/NSD)
  • Subscription
• Supports package notification interfaces (Os-Ma-Nfvo and Or-Vnfm) to ETSI Catalog Manager

• Supports Communication Security, conforming SOL005 specification
  • ONAP SO NFVO NBI supports HTTPS and Authentication/Authorization towards SO/SOL005 Adapter
  • ONAP SO NFVO SBI (through SOL003 Adapter) supports HTTPS and Authentication/Authorization towards SVNFMs

Epic and User Story

NFVO Architecture & Functions

The following diagram depicts the NFVO component architecture

NFVO Microservice Plugin Framework

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