1. IFA007: VNF LCM
The Or-Vnfm reference point is used for exchanges between Network Functions Virtualization Orchestrator (NFVO) and Virtualized Network Function Manager (VNFM) [ETSI GS NFV-IFA 007]. It supports a number of interfaces of which the VNF Lifecycle Management interface is of particular interest (produced by VNFM, consumed by NFVO). On this interface, the following operations are defined:
• Create VNF Identifier
• Instantiate VNF
• Scale VNF
• Scale VNF to Level
• Change VNF Flavour
• Terminate VNF
• Delete VNF Identifier
• Query VNF
• Heal VNF
• Operate VNF
• Modify VNF Information
• Get Operation Status
For performing these operations, the VNFM relies on the VNFD, per IFA007.
Note: Get Operation Status & Query VNF: There is no special VNFD requirement for this operation.

2. VNF LCM descriptions Operation Support by VNF Explanation
Instantiate VNF
Mandatory
Allocate virtualised resources, configure them, start the application, trigger configuration of the application.
Scale VNF
Optional
Change the amount of virtualised resources allocated to a VNF.
Scale VNF to Level
This operation scales an instantiated VNF of a particular DF to a target size. The target size is either expressed as an instantiation level of that DF as defined in the VNFD, or given as a list of scale levels, one per scaling aspect of that DF. Instantiation levels and scaling aspects are declared in the VNFD.
Query VNF
Obtain runtime information about the VNF instance (VnfInfo).
Terminate VNF
Terminate the VNF, and release the virtualised resources.
Change VNF flavour
Change the deployment flavor of the VNF, which typically includes changing the amount of virtualised resources, and the topology.
Heal VNF
Virtualisation-related corrective actions to repair a faulty VNF, and/or its VNFC instances and internal VNF Virtual Link(s).
Operate VNF
Start or stop the VNF software.
Modify VNF Info
Change certain items of the VNF runtime information (VnfInfo).
Modify configuration
Providing configuration parameters information for a VNF instance
Note: this operation is classified as a “Configuration Management” operation in IFA007. It is not under LCM operation.

3. modify_configuration
tosca.interfaces.nfv.vnf.lifecycle.xxx
lifecycle.Basic
lifecycle.Healable
lifecycle.Scalable
lifecycle.Custom
instantiate
terminate
modify_information
modify_configuration
change_flavour
operate
heal
scale
scale_to_level
do_something
NFV Profile
Operations
Operations
Operations
Operations
This proposal, [NFV Profile] introduces a set of new TOSCA Interface Types: Basic, Healable, Scalable and Custom.
[TOSCA YAML Profile] has introduced create, configure, start, stop, delete.
To fulfill IFA007 VNF LCM requirements, the “create” and “delete” operations from [TOSCA YAML Profile] and all of the operation from [NFV Profile] are used.
Mapping: “create” operation to a VNF on the network service level is mapped to “Create VNF identifier” + “Instantiate VNF” operations on the Or-Vnfm interface.
Instantiate VNF mapped to lifecycle.Basic: instantiate operation from VNFD.
Mapping: “delete” operation to a VNF on the network service level is mapped to “Terminate VNF” + “Delete VNF identifier” operation on the Or-Vnfm interface.
Terminate VNF mapped to lifecycle.Basic terminate operation from VNFD
Mapping: “start” and “stop” operations to a VNF on the network service level is mapped to “Operate VNF” operations on the Or-Vnfm interface.
lifecycle.Standard
create
configure
start
stop
delete
TOSCA YAML
Operations