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This section describes how to design, develop, and submit a Virtual Network Function for use as a Network Resource in the OpenECOMP environment.

The primary audiences for this documentation are

  • VNF providers: creators of VNFs (executables and related configuration files)
  • Acceptance personnel: those tasked with certifying VNFs (approving them to run in OpenECOMP environments)
  • Service Designers: those who combine Virtual Functions (including VNFs) into Services in OpenECOMP
  • DevOps: those who deploy, operate, and monitor OpenECOMP Services containing VNFs

There are three stages in the life cycle of a VNF, shown here:

Figure 1. VNF complete life cycle stages

Reference Documents for VNF Providers

There are four reference documents for VNF Providers, summarized here.

<<DocRef: VNF Guidelines for Network Cloud and OpenECOMP>>

  • identifies audiences interested in VNFs
  • describes the VNF environment
  • gives an overview of requirements
  • points out differences between OpenECOMP VNFs and ETSI VNFs

<<DocRef: VNF Cloud Readiness Requirements for OpenECOMP (formerly: "Common Requirements...">>

  • design requirements (API versioning, decomposition, reliance on open source database, packet size limitations)
  • resiliency requirements
  • security requirements

<<DocRef: VNF Management Requirements for OpenECOMP>>

  • requirements imposed by the targeted network cloud infrastructure, including the hypervisor
  • identification requirements for the VNF and its components
  • configuration management requirements
    • a VNF must provide a Device YANG model
    • a VNF must implement a NETCONF server; the required NETCONF API's are referenced, and the supplier must demonstrate mounting the NETCONF server on OpenDaylight
  • monitoring and operations requirements
    • format of messages (event records)
    • frequency of reporting
    • security
  • licensing requirements

<<DocRef: VNF Heat Template Requirements for OpenECOMP>>

  • provides recommendations and standards for building Heat templates compatible with OpenECOMP

<<DocRef: VNF Network Cloud Specification for OpenECOMP (Example)>>

  • describes the hosting environment to be assumed by a VNF

Example VNFs Included with OpenECOMP

The example VNFs distributed with OpenECOMP are:

  • vFW (Firewall)
  • vDNS (Domain Name Server).

The Installation and Demo page describes how to design and operate Services using these VNFs.

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