7 Virtualised Network Function information elements

7.1 VNF Descriptor (VNFD)

7.1.1 Introduction

The clauses below define the information elements related to the VNFD. A UML representation of the VNFD high?level structure is shown in figure 7.1.1-1.

Figure 7.1.1-1: VNFD high-level structure

7.1.2 VNFD information element

7.1.2.1 Description

A VNFD is a deployment template which describes a VNF in terms of deployment and operational behaviour requirements. It also contains connectivity, interface and virtualised resource requirements.

7.1.2.2 Attributes

The attributes of the VNFD information element shall follow the indications provided in table 7.1.2.2-1.

Table 7.1.2.2-1: Attributes of the VNFD information element

Attribute	Qualifier	Cardinality	Content	Description	CMCC Comment	State
vnfdInvariantId		1	Identifier	Invariant identifier of the VNFD	Can it be merged with nfProductName below?	FFS
vnfdId	M	1	Identifier	Identifier of this VNFD information element. This attribute shall be globally unique. The format will be defined in the data model specification phase. See note 1.	TBA	agreed
~~nfDescription~~		1	NFDescription	Description of the VNF.	Confirmed	removed
vnfProvider	M	1	String	Provider of the VNF and of the VNFD.	Confirmed	agreed
vnfProductName	M	1	String	Name to identify the VNF Product. Invariant for the VNF Product lifetime.	Renamed to Name	agreed
vnfSoftwareVersion	M	1	Version	Software version of the VNF. This is changed when there is any change to the software that is included in the VNF Package.	Renamed to SWversion	agreed
vnfdVersion	M	1	Version	Identifies the version of the VNFD.	Renamed to Version	agreed
vnfProductInfoName	M	0..1	String	Human readable name for the VNF Product. Can change during the VNF Product lifetime.	Renamed to Shortname	agreed
vnfProductInfo Description	M	0..1	String	Human readable description of the VNF Product. Can change during the VNF Product lifetime.	Renamed to description	agreed
vnfmInfo	M	0..N	String	Identifies VNFM(s) compatible with the VNF described in this version of the VNFD.	TBA. Suggest to follow R1 convention, using the name of micro-service of the vnfm drive. For vendor specific vnfm: vendorname+vnfmdriver For generic vnfm: gvnfmdriver	agreed
localizationLanguage	M	0..N	Not specified	Information about localization languages of the VNF (includes e.g. strings in the VNFD). See note 4.	Optional, refer to ISO936 https://www.iso.org/iso-639-language-codes.html	agreed
defaultLocalization Language	M	0..1	Not specified	Default localization language that is instantiated if no information about selected localization language is available. Shall be present if "localizationLanguage" is present and shall be absent otherwise.	Optional, refer to ISO936 https://www.iso.org/iso-639-language-codes.html	agreed
vdu	M	1..N	Vdu	Virtualisation Deployment Unit. See clause 7.1.6.	Confirmed.	agreed
virtualComputeDesc	M	1..N	VirtualComputeDesc	Defines descriptors of virtual compute resources to be used by the VNF. See clause 7.1.9.2.2.	Suggest to change from 0.. N to 1.. N.	agreed
virtualStorageDesc	M	0..N	VirtualStorageDesc	Defines descriptors of virtual storage resources to be used by the VNF. See clause 7.1.9.4.2.	Confirmed	agreed
intVirtualLinkDesc	M	1..N	VnfVirtualLinkDesc	Represents the type of network connectivity mandated by the VNF provider between two or more CPs which includes at least one internal CP. See clause 7.1.7.	Confirmed	agreed
vnfReservedCpd	M	1..N	VduCpd	Reserved IP Address for VNF which is not bounded to any specific VNFC, but assigned manually from outside and potentially shared as a floating IP among VNFCs.	TBA.	agreed
vnfExtCpd	M	1..N	VnfExtCpd	Describes external interface(s) exposed by this VNF enabling connection with a VL. See clause 7.1.3.	Confirmed	agreed
deploymentFlavour	M	1..N	VnfDf	Describes specific DF(s) of a VNF with specific requirements for capacity and performance. See clause 7.1.8.	Confirmed	agreed
configurableProperties	M	0..1	VnfConfigurableProperties	Describes the configurable properties of the VNF (e.g. related to auto scaling and auto healing). See clause 7.1.12.	Optional. Without definitions for key-value pairs.	agreed
modifiableAttributes	M	0..1	VnfInfoModifiableAttributes	Describes the modifiable attributes of the VNF. See clause 7.1.14.	Optional Without definitions for key-value pairs.	agreed
lifeCycleManagementScript	M	0..N	LifeCycleManagementScript	Includes a list of events and corresponding management scripts performed for the VNF. See clause 7.1.13.	Confirmed	agreed
elementGroup	M	0..N	VnfdElementGroup	Describes the associated elements of a VNFD for a certain purpose during VNF lifecycle management. See clause 7.1.4.	To be further worked on. Without definitions for key-value pairs.	agreed
vnfIndicator	M	0..N	VnfIndicator	Declares the VNF indicators that are supported by this VNF.	Confirmed	agreed
autoScale	M	0..N	Rule	Rule that determines when a scaling action needs to be triggered on a VNF instance e.g. based on certain VNF indicator values or VNF indicator value changes or a combination of VNF indicator value(s) and monitoring parameter(s). See notes 2 and 3.	To be further worked on. Suggest to allow for multiple rules. Provide specifications for rule definition.	postpone to future release
VeVnfmVnfInterface	M	1	String	The API (e.g. IP adress and port) for VNF management.	TBA.
logo	M	0..1	String	File path of the vendor specified logo.	Confirmed	agreed
~~homingGroup~~		0..N	Not Specified		Not sure when and how to use this attribute.	removed
NOTE 1: The VNFD Identifier shall be used as the unique identifier of the VNF Package that contains this VNFD. Any modification of the content of the VNFD or the VNF Package shall result in a new VNFD Identifier. NOTE 2: Monitoring parameters are specified as part of VNF flavour, VDU and VL descriptions. NOTE 3: The rule (conditions and actions) can be expressed as a script. NOTE 4: This allows to provide one or more localization languages to support selecting a specific localization language at VNF instantiation time.

7.1.3 Information elements related to VnfExtCpd

7.1.3.1 Introduction

The clauses below define the information elements related to the VnfExtCpd.

7.1.3.2 VnfExtCpd information element

7.1.3.2.1 Description

A VnfExtCpd is a type of Cpd and describes an external interface, a.k.a external CP, exposed by this VNF enabling connection with a VL.

A VnfExtCpd inherits from the Cpd Class (see clause 7.1.6.3). All attributes of the Cpd are also attributes of the VnfExtCpd.

When the VnfExtCpd is mapped to a VduCpd, the values for the attributes type, subType and description shall be identical for both elements.

7.1.3.2.2 Attributes

The attributes of the VnfExtCpd information element shall follow the indications provided in table 7.1.3.2.2-1.

Table 7.1.3.2.2-1: Attributes of the VnfExtCpd information element

Attribute	Qualifier	Cardinality	Content	Description	CMCC Comments	state
intCpd	M	0..1	Identifier (Reference to VduCpd)	Reference to the internal VDU CPD which is used to instantiate internal CPs. These internal CPs are, in turn, exposed as external CPs defined by this external CPD.	TBA	agreed
virtualNetworkInterfaceRequirements		0..N	VirtualNetworkInterfaceRequirements	Specifies requirements on a virtual network interface realising the CPs instantiated from this CPD. See note.	From Mandatory to Optional	agreed
(inherited attributes)				All attributes inherited from Cpd.	Confirmed	agreed
NOTE: In case of referencing an intCpd via its identifier, the virtualNetworkInterfaceRequirements attribute of the referenced intCpd applies.

7.1.3.3 AddressData information element

7.1.3.3.1 Description

The AddressData information element supports providing information about the addressing scheme and parameters applicable to a CP.

7.1.3.3.2 Attributes

The attributes of the AddressData information element shall follow the indications provided in table 7.1.3.3.2-1.

Table 7.1.3.3.2-1: Attributes of the AddressData information element

Attribute

Qualifier

Cardinality

Content

Description

CMCC comment

state

addressType

M

1

Enum

Describes the type of the address to be assigned to the CP instantiated from the parent CPD.

Value:

MAC address.
IP address.
etc.

The content type shall be aligned with the address type supported by the layerProtocol attribute of the parent CPD.

Confirmed

agreed

l2AddressData

0..1

Not specified

Provides the information on the MAC addresses to be assigned to the CP(s) instantiated from the parent CPD.

Shall be present when the addressType is MAC address.

From M to O

agreed

l3AddressData

M

0..1

L3AddressData

Provides the information on the IP addresses to be assigned to the CP instantiated from the parent CPD.

Shall be present when the addressType is IP address.

See clause 7.1.3.3.1.

Confirmed.

agreed

7.1.3.4 L3AddressData information element

7.1.3.4.1 Description

The L3AddressData information element supports providing information about Layer 3 level addressing scheme and parameters applicable to a CP.

7.1.3.4.2 Attributes

The attributes of the L3AddressData information element shall follow the indications provided in table 7.1.3.4.2-1.

Table 7.1.3.4.2-1: Attributes of the L3AddressData information element

Attribute	Qualifier	Cardinality	Content	Description	state
iPAddressAssignment		1	Boolean	Specify if the address assignment is the responsibility of management and orchestration function or not. If it is set to True, it is the management and orchestration function responsibility.	agreed
floatingIpActivated		1	Boolean	Specify if the floating IP scheme is activated on the CP or not.	agreed
iPAddressType	M	0..1	Enum	Define address type. Value: IPv4 address. IPv6 address. See note.	agreed
fixedIPAddress	M	0..1	String	TBA. IP Address for the VNF, which is assigned manually from outside.
fixedIPSubnet	M	0..1	String	TBA. Subnet name for the VNF, which is assigned manually from outside.
numberOfIpAddress		0..1	Integer	Minimum number of IP addresses to be assigned based on this L3AddressData information element. From M to O.	agreed
allowedIPAddress	M	0..N	String	TBA. Allowed floating IP addresses, in CIDR format.
NOTE: The address type should be aligned with the address type supported by the layerProtocol attribute of the parent VnfExtCpd.

7.1.4 VnfdElementGroup information element

7.1.4.1 Description

A VNFD Element Group is a mechanism for associating elements of a VNFD (Vdus and VnfVirtualLinkDesc(s)) for a certain purpose, for example, scaling aspects.

A given element can belong to multiple groups.

7.1.4.2 Attributes

The attributes of the VnfdElementGroup information element shall follow the indications provided in table 7.1.4.2-1.

Table 7.1.4.2-1: Attributes of the VnfdElementGroup information element ()

Attribute	Qualifier	Cardinality	Content	Description	state
vnfdElementGroupId	M	1	Identifier	Unique identifier of this group in the VNFD.	agreed
description	M	1	String	Human readable description of the group.	agreed
vdu	M	0..N	Identifier (Reference to Vdu)	References to Vdus that are part of this group.	agreed
virtualLinkDesc	M	0..N	Identifier (Reference to VnfVirtualLinkDesc)	References to VnfVirtualLinkDesc that are part of this group.	agreed

7.1.5 Information elements related to the configuration of VNF lifecycle management operations

Removed entirely.

The only required configuration input is the inject file for VM creation, which is suggested to be added as an attribute to Vdu information element in Section 7.1.6.2.2.

7.1.6 Information elements related to the Vdu

7.1.6.1 Introduction

The clauses below define the information elements related to the Vdu.

7.1.6.2 Vdu information element

7.1.6.2.1 Description

The Virtualisation Deployment Unit (VDU) is a construct supporting the description of the deployment and operational behaviour of a VNFC.

A VNFC instance created based on the VDU maps to a single virtualisation container (e.g. a VM).

A UML representation of the Vdu high-level structure is shown in figure 7.1.6.2.1-1.

Figure 7.1.6.2.1-1: Vdu deployment view

7.1.6.2.2 Attributes

The attributes of the Vdu information element shall follow the indications provided in table 7.1.6.2.2-1.

Table 7.1.6.2.2-1: Attributes of the Vdu information element

Attribute	Qualifier	Cardinality	Content	Description	state
vduInvariantId		1	Identifier	Invariant identifier of the Vdu. Need to confirm the application scenario.	FFS
vduId	M	1	Identifier	Unique identifier of this Vdu in VNFD.	agreed
name	M	1	String	Human readable name of the Vdu.	agreed
vduNamingCode		1	String	Short code of the Vdu.	FFS
vmFlavorName		1	String	Name of the VM flavour. Need to clarify the application scenario and relationship with the other attributes.	FFS
description	M	1	String	Human readable description of the Vdu.	agreed
vduCpd	M	1..N	VduCpd	Describes network connectivity between a VNFC instance (based on this Vdu) and an Virtual Link (VL). See clause 7.1.6.4.	agreed
virtualComputeDesc	M	1	Identifier (reference to VirtualComputeDesc)	Describes CPU, Memory and acceleration requirements of the Virtualisation Container realising this Vdu. See clause 7.1.9.2.2.	agreed
virtualStorageDesc	M	0..N	Identifier (reference to VirtualStorageDesc)	Describes storage requirements for a VirtualStorage instance attached to the virtualisation container created from virtualComputeDesc defined for this Vdu. See clause 7.1.9.4.	agreed
bootOrder	M	0..N	KeyValuePair	The key indicates the boot index (lowest index defines highest boot priority). The Value references a descriptor from which a valid boot device is created e.g. VirtualStorageDesc from which a VirtualStorage instance is created. See note 1. The definition of the KeyValuePair needs further specified.	agreed
swImageDesc	M	0..1	SwImageDesc	Describes the software image which is directly loaded on the virtualisation container realising this Vdu. See clause 7.1.6.5. See note 2.	agreed
nfviConstraint	M	0..N	NfviConstraint	Describes constraints on the NFVI for the VNFC instance(s) created from this Vdu. For example, aspects of a secure hosting environment for the VNFC instance that involve additional entities or processes. See note 3. Extend and add Nfviconstraint definition in Section 7.1.6.8.	agreed
watchdog	M	0..1	string	TBA. Watchdog action to be triggered by VIM for the VNF in case , e.g. reset or hard shutdown etc.	agreed, move to VduProfile
vmBootUpTimeOut	O	0..1	integer	TBA. VNF could specify a more appropriate boot up timeout value for VNFM to detect failure during creation.	agreed, move to VduProfile
monitoringParameter		0..N	MonitoringParameter	Defines the virtualised resources monitoring parameters on VDU level. MonitoringParameter is defined in clause 7.1.11.3. From M to O.	agreed
configurableProperties		0..1	VnfcConfigurableProperties	Describes the configurable properties of all VNFC instances based on this VDU. See clause 7.1.6.7.	agreed
virtualLinkDesc		0..N	Identifier (reference to VLD)	Suggest to be removed. This is duplicated information, as the VL is already connected toVDU via intCpd information elements.	removed
highAvailability			Not Specified	High availability functionality of the VDU.
injectFiles	M	0..N	TBD in DM	TBA.	agreed
NOTE 1: If no boot order is defined the default boot order defined in the VIM or NFVI shall be used. NOTE 2: More software images can be attached to the virtualisation container using VirtualStorage resources. See clause 7.1.9.4. NOTE 3: These are constraints other than stipulating that a VNFC instance has access to a certain resource, as a prerequisite to instantiation. The attributes virtualComputeDesc and virtualStorageDesc define the resources required for instantiation of the VNFC instance.

7.1.6.3 Cpd information element

7.1.6.3.1 Description

A Cpd information element describes network connectivity to a compute resource or a VL. This is an abstract class used as parent for the various Cpd classes.

7.1.6.3.2 Attributes

The attributes of the Cpd information element shall follow the indications provided in table 7.1.6.3.2-1.

Table 7.1.6.3.2-1: Attributes of the Cpd information element

Attribute	Qualifier	Cardinality	Content	Description	state
cpdId	M	1	Identifier	Identifier of this Cpd information element.	agreed
layerProtocol		1..N	Enum	Identifies which protocol the CP uses for connectivity purposes (Ethernet, IPV4, IPV6,). See note. Chang from M to O.	FFS
cpRole		0..1	String	Identifies the role of the port in the context of the traffic flow patterns in the VNF or parent NS. For example a VNF with a tree flow pattern within the VNF will have legal cpRoles of ROOT and LEAF. Confirmed.	agreed
description	M	0..1	String	Provides human-readable information on the purpose of the CP (e.g. CP for control plane traffic). Confirmed.	agreed
addressData	M	0..N	AddressData	Provides information on the addresses to be assigned to the CP(s) instantiated from this CPD. Confirmed.	agreed, changed to cpProtocolData in v2.4.1
allowedAddressData	M	0..N	AddressData	TBA. For specifying floating IP to be shared among Cpds, which was reserved for vnfReservedCpd.	agreed
NOTE: This information determines, amongst other things, which type of address to assign to the access point at instantiation time.

7.1.6.4 VduCpd information element

7.1.6.4.1 Description

A VduCpd information element is a type of Cpd and describes network connectivity between a VNFC instance (based on this VDU) and an VL.

A VduCpd inherits from the Cpd Class (see clause 7.1.6.3). All attributes of the Cpd are also attributes of the VduCpd.

7.1.6.4.2 Attributes

The attributes of the VduCpd information element shall follow the indications provided in table 7.1.6.4.2-1.

Table 7.1.6.4.2-1: Attributes of the VduCpd information element

Attribute	Qualifier	Cardinality	Content	Description	state
VirtualLinkDesc	M	1	Identifier (Reference to VnfVirtualLinkDesc)	Reference of the internal/external VLD which this internal CPD connects to. From 0..1 to 1.	FFS
bitrateRequirement	M	0..1	Number	Bitrate requirement on this CP. Confirmed.	agreed
vnicName	M	0..1	String	TBA. The name of the vinic. Could me missing and use the parameter inside infject file.	agreed
vnicOrder	M	0..1	Integar	TBA. The order of vnic initiation. Could me missing and use the parameter inside infject file.	agreed
vnicType	M	0..1	Enum	TBA. {normal?direct?baremetal?Direct-physical?virtio-forwarder?MACVtap}	agreed
virtualNetworkInterfaceRequirements		0..N	VirtualNetworkInterfaceRequirements	Specifies requirements on a virtual network interface realising the CPs instantiated from this CPD. From M to O.	agreed
logicalNodeRequirements		0..N	KeyValuePair	Describes the CPD with any logical node I/O requirements (for network devices) that may have been created. Linking these attributes is necessary so that I/O requirements that need to be articulated at the logical node level can be associated with the network interface requirements associated with the CPD. To be clarified.	removed
(inherited attributes)				All attributes inherited from Cpd.	agreed

7.1.6.5 SwImageDesc information element

7.1.6.5.1 Description

This information element describes requested additional capability for a particular VDU. Such a capability may be for acceleration or specific tasks.

7.1.6.5.2 Attributes

The attributes of the SwImageDesc information element shall follow the indications provided in table 7.1.6.5.2-1.

Table 7.1.6.5.2-1: Attributes of the SwImageDesc information element

Attribute	Qualifier	Cardinality	Content	Description	state
id	M	1	Identifier	The identifier of this software image.	agreed
name	M	1	String	The name of this software image.	agreed
version	M	1	String	The version of this software image.	agreed
checksum	M	1	String	The checksum of the software image file.	agreed
containerFormat	M	1	String	The container format describes the container file format in which software image is provided.	agreed
diskFormat	M	1	String	The disk format of a software image is the format of the underlying disk image.	agreed
minDisk	M	1	Number	The minimal disk size requirement for this software image. The value of the "size of storage" attribute of the VirtualStorageDesc referencing this SwImageDesc shall not be smaller than the value of minDisk.	agreed
minRam	M	0..1	Number	The minimal RAM requirement for this software image. The value of the "size" attribute of VirtualMemoryData of the Vdu referencing this SwImageDesc shall not be smaller than the value of minRam.	agreed
size	M	1	Number	The size of this software image.	agreed
swImage	M	1	Identifier (Reference to a SwImage)	This is a reference to the actual software image. The reference can be relative to the root of the VNF Package or can be a URL.	agreed
operatingSystem	M	0..1	String	Identifies the operating system used in the software image. This attribute may also identify if a 32 bit or 64 bit software image is used.	agreed
supportedVirtualisationEnvironment	M	0..N	String	Identifies the virtualisation environments (e.g. hypervisor) compatible with this software image.	agreed

7.1.6.6 VirtualNetworkInterfaceRequirements information element

7.1.6.6.1 Description

This information element specifies requirements on a virtual network interface.

7.1.6.6.2 Attributes

The attributes of the VirtualNetworkInterfaceRequirements information element shall follow the indications provided in table 7.1.6.6.2-1.

Table 7.1.6.6.2-1: Attributes of the VirtualNetworkInterfaceRequirements information element

Attribute	Qualifier	Cardinality	Content	Description	state
name	M	0..1	String	Provides a human readable name for the requirement.	agreed
description	M	0..1	String	Provides a human readable description of the requirement.	agreed
supportMandatory	M	1	Boolean	Indicates whether fulfilling the constraint is mandatory (TRUE) for successful operation or desirable (FALSE).	agreed
networkInterfaceRequirements	M	1	Not specified.	The network interface requirements. An element from an array of key-value pairs that articulate the network interface deployment requirements.	agreed
nicIoRequirements	M	0..1	Identifier (reference to logicalNodeData)	This references (couples) the CPD with any logical node I/O requirements (for network devices) that may have been created. Linking these attributes is necessary so that so that I/O requirements that need to be articulated at the logical node level can be associated with the network interface requirements associated with the CPD.	FFS

7.1.6.7 VnfcConfigurableProperties information element

7.1.6.7.1 Description

This information element defines the configurable properties of a VNFC. For a VNFC instance, the value of these properties can be modified through the VNFM.

7.1.6.7.2 Attributes

The attributes of the VnfcConfigurableProperties information element shall follow the indications provided in table 7.1.6.7.2-1.

Table 7.1.6.7.2-1: Attributes of the VnfcConfigurableProperties information element

Attribute	Qualifier	Cardinality	Content	Description	state
additionalVnfcConfigurableProperty	M	0..N		It provides VNFC configurable properties that can be modified using the ModifyVnfInfo operation.	agreed

7.1.6.8 NfviConstraint information element

7.1.6.8.1 Description

This information element defines…….

7.1.6.8.2 Attributes

The attributes of the NfviConstraint information element shall follow the indications provided in table 7.1.6.8.2-1.

Table 7.1.6.8.2-1: Attributes of the nfviConstraint information element

Attribute	Qualifier	Cardinality	Content	Description	state
AvailabilityZone	M	0..1	String	AvailabilityZone	agreed
HostAggregates	M	0..1	String	HostAggregates	agreed

7.1.7 Information elements related to the VLD

7.1.7.1 Introduction

The clauses below define the information elements related to the VLD.

7.1.7.2 VnfVirtualLinkDesc information element

7.1.7.2.1 Description

The VnfVirtualLinkDesc information element supports providing information about an internal VNF VL.

7.1.7.2.2 Attributes

The attributes of the VnfVirtualLinkDesc information element shall follow the indications provided in table 7.1.7.2.2?1.

Table 7.1.7.2.2-1: Attributes of the VnfVirtualLinkDesc information element

Attribute	Qualifier	Cardinality	Content	Description	state
virtualLinkDescId	M	1	Identifier	Unique identifier of this internal VLD in VNFD.	agreed
virtualLinkDescFlavour		1..N	VirtualLinkDescFlavour	Describes a specific flavour of the VL with specific bitrate requirements. See clause 7.1.8.5. From M to O.	agreed
~~cidr~~	M	1	~~String~~	~~TBA to a new VnfVirtualLinkProfile class. subnet CIDR Initiation parameter. Moved to~~
~~allocationPools~~	M	~~0..N~~	~~KeyValue~~	~~TBA to a new VnfVirtualLinkProfile class. [starting IP address, ending IP address]. Initiation parameter.~~
~~gatewayIp~~	M	~~0..1~~	~~String~~	~~TBA to a new VnfVirtualLinkProfile class. Gateway IP address. Initiation parameter.~~
~~networkName~~	M	1	~~String~~	~~TBA to a new VnfVirtualLinkProfile class. Network name. Initiation parameter.~~
~~segmentationId~~	M	~~0..1~~	~~String~~	~~TBA to a new VnfVirtualLinkProfile class. VLAN ID. Initiation parameter.~~
~~networkType~~	M	~~0..1~~	~~Enum~~	~~TBA to a new VnfVirtualLinkProfile class. VLAN?VxLAN~~
~~physicalNetwork~~	M	~~0..1~~	~~String~~	~~TBA to a new VnfVirtualLinkProfile class. The physical network. Initiation parameter. Default to “default” if not specified otherwise.~~
~~dhcpEnabled~~	M	~~0..1~~	~~Boolean~~	~~TBA to a new VnfVirtualLinkProfile class. Indicating whether DHCP is supported. Default to “false” if not specified otherwise.~~
~~vlanTransparent~~	M	~~0..1~~	~~Boolean~~	~~TBA to a new VnfVirtualLinkProfile class. Indicating whether “VLAN Transparent Mode” is supported. Default to “False” if not specified otherwise.~~
connectivityType	M	1	ConnectivityType	See clause 7.1.7.3.	agreed
testAccess		0..N	String	Specifies test access facilities expected on the VL (e.g. none, passive monitoring, or active (intrusive) loopbacks at endpoints).	agreed
description	M	0..1	String	Provides human-readable information on the purpose of the VL (e.g. control plane traffic).	agreed
monitoringParameter		0..N	MonitoringParameter	Defines the virtualised resources monitoring parameters on VLD level. MonitoringParameter is defined in clause 7.1.11.3.	agreed

7.1.7.X VnfVirtualLinkProfile information element

7.1.7.X.1 Description

The VnfVirtualLinkProfiel information element supports providing further descriptive information about an internal VNF VL in addition to VnfVirtualLinkDesc.

7.1.7.X.2 Attributes

The attributes of the VnfVirtualLinkDesc information element shall follow the indications provided in table 7.1.7.X.2-1.

Table 7.1.7.X.2-1: Attributes of the VnfVirtualLinkProfile information element

Attribute	Qualifier	Cardinality	Content	Description	state: moved to VirtualLinkProfile
cidr	M	1	String	TBA to a new VnfVirtualLinkProfile class. subnet CIDR Initiation parameter. Moved to	agreed, part of initiationParameter
allocationPools	M	0..N	KeyValue	TBA to a new VnfVirtualLinkProfile class. [starting IP address, ending IP address]. Initiation parameter.	agreed, part of initiationParameter
gatewayIp	M	0..1	String	TBA to a new VnfVirtualLinkProfile class. Gateway IP address. Initiation parameter.	agreed, part of initiationParameter
networkName	M	1	String	TBA to a new VnfVirtualLinkProfile class. Network name. Initiation parameter.	agreed, part of initiationParameter
segmentationId	M	0..1	String	TBA to a new VnfVirtualLinkProfile class. VLAN ID. Initiation parameter.	agreed, part of initiationParameter
networkType	M	0..1	Enum	TBA to a new VnfVirtualLinkProfile class. VLAN?VxLAN	agreed
physicalNetwork	M	0..1	String	TBA to a new VnfVirtualLinkProfile class. The physical network. Initiation parameter. Default to “default” if not specified otherwise.	agreed, part of initiationParameter
dhcpEnabled	M	0..1	Boolean	TBA to a new VnfVirtualLinkProfile class. Indicating whether DHCP is supported. Default to “false” if not specified otherwise.	agreed
vlanTransparent	M	0..1	Boolean	TBA to a new VnfVirtualLinkProfile class. Indicating whether “VLAN Transparent Mode” is supported. Default to “False” if not specified otherwise.	agreed

7.1.7.3 ConnectivityType information element

7.1.7.3.1 Description

The contents of a ConnectivityType type shall comply with the indications provided in table 7.1.7.3.2-1.

7.1.7.3.2 Attributes

The attributes of the ConnectivityType information element shall follow the indications provided in table 7.1.7.3.2-1.

Table 7.1.7.3.2-1: Attributes of the ConnectivityType information element

Attribute

Qualifier

Cardinality

Content

Description

state

layerProtocol

M

1

Enum

Identifies the protocol this VL gives access to (, IPV4, IPV6,).

agreed

flowPattern

0..1

String

Identifies the flow pattern of the connectivity (Line, Tree, Mesh).

From M to O.

agreed

7.1.8 Information elements related to the DeploymentFlavour (Experimental)

7.1.8.1 Introduction

The clauses below define the information elements related to the DF.

7.1.8.2 VnfDf information element

7.1.8.2.1 Description

The VnfDf describes a specific deployment version of a VNF.

7.1.8.2.2 Attributes

The attributes of the VnfDf information element shall follow the indications provided in table 7.1.8.2.2-1.

Table 7.1.8.2.2-1: Attributes of the VnfDf information element

Attribute	Qualifier	Cardinality	Content	Description	state
flavourId	M	1	Identifier	Identifier of this DF within the VNFD.	agreed
description	M	1	String	Human readable description of the DF.	agreed
vduProfile	M	1..N	VduProfile	Describes additional instantiation data for the VDUs used in this flavour.	agreed
priorityInfo	M	0..N	KeyValuePair	Specifies the creation priority for each VDU.Key is the priority level, integer starting from 0 with descending priority. Value is a list of VDU name(s).
virtualLinkProfile	M	0..N	VirtualLinkProfile	Defines the internal VLD along with additional data which is used in this DF. See notes 1 and 2.	agreed
instantiationLevel	M	1	InstantiationLeve l	Describes the various levels of resources that can be used to instantiate the VNF using this flavour. Examples: Small, Medium, Large. If there is only one "instantiationLevel" entry, it shall be treated as the default instantiation level for this DF. From 1..N to 1.	agreed
affinityOrAntiAffinityGroup	M	0..N	AffinityOrAntiAffinityGroup	Specifies affinity or anti-affinity relationship applicable between the virtualisation containers (e.g. virtual machines) to be created using different VDUs or internal VLs to be created using different VnfVirtualLinkDesc(s) in the same affinity or anti-affinity group. See clause 7.1.8.12. (See note).	agreed
scalingAspect	M	0..N	ScalingAspect	The scaling aspects supported by this DF of the VNF. scalingAspect shall be present if the VNF supports scaling.	agreed
placementGroup		0..N	Not Specified	Not used.	removed
NOTE 1: This allows for different VNF internal topologies between DFs. NOTE 2: virtualLinkProfile needs to be provided for all VLs that the CPs of the VDUs in the VDU profiles connect to. NOTE 3: In the present specification, including either VDU(s) or VnfVirtualLinkDesc(s) into the same affinity or anti-affinity group is supported. Extension to support including both VDU(s) and VnfVirtualLinkDesc(s) into the same affinity or anti-affinity group is left for future specification.

7.1.8.3 VduProfile information element

7.1.8.3.1 Description

The VduProfile describes additional instantiation data for a given VDU used in a DF.

7.1.8.3.2 Attributes

The attributes of the VduProfile information element shall follow the indications provided in table 7.1.8.3.2-1.

Table 7.1.8.3.2-1: Attributes of the VduProfile information element

Attribute	Qualifier	Cardinality	Content	Description	state
vduId	M	1	Identifier (Reference to Vdu)	Uniquely identifies a VDU.	agreed

minNumberOfInstances	M	1	Integer	Minimum number of instances of the VNFC based on this VDU that is permitted to exist for this flavour.	agreed
maxNumberOfInstances	M	1	Integer	Maximum number of instances of the VNFC based on this VDU that is permitted to exist for this flavour.	agreed
localAffinityOrAntiAffinityRule	M	0..N	LocalAffinityOrAntiAffinityRule	Specifies affinity or anti-affinity rules applicable between the virtualisation containers (e.g. virtual machines) to be created based on this VDU. See clause 7.1.8.11. When the cardinality is greater than 1, both affinity rule(s) and anti-affinity rule(s) with different scopes (e.g. "Affinity with the scope resource zone and anti-affinity with the scope NFVI node") are applicable to the virtualisation containers (e.g. virtual machines) to be created based on this VDU.	agreed
affinityOrAntiAffinityGroupId	M	0..N	Identifier	Identifier(s) of the affinity or anti-affinity group(s) the VDU belongs to. See note.	agreed
NOTE: Each identifier references an affinity or anti-affinity group which expresses affinity or anti-affinity relationships between the virtualisation container(s) (e.g. virtual machine(s)) to be created using this VDU and the virtualisation container(s) (e.g. virtual machine(s)) to be created using other VDU(s) in the same group.

7.1.8.4 VirtualLinkProfile information element

7.1.8.4.1 Description

The VirtualLinkProfile describes additional instantiation data for a given VL used in a DF.

7.1.8.4.2 Attributes

The attributes of the VirtualLinkProfile information element shall follow the indications provided in table 7.1.8.4.2-1.

Table 7.1.8.4.2-1: Attributes of the VirtualLinkProfile information element

Attribute	Qualifier	Cardinality	Content	Description	state
vnfVirtualLinkDescId	M	1	Identifier (Reference to VnfVirtualLinkDesc)	Uniquely identifies a Vnf VLD.	agreed
flavourId	M	1	Identifier (Reference to VirtualLinkDescFlavour)	Identifies a flavour within the VnfVirtualLinkDesc.	agreed
localAffinityOrAntiAffinityRule	M	0..N	LocalAffinityOrAntiAffinityRule	Specifies affinity or anti-affinity rules applicable between the VLs based on this VnfVirtualLinkDesc. See clause 7.1.8.4. When the cardinality is greater than 1, both affinity rule(s) and anti-affinity rule(s) with different scopes are applicable to the VLs based on this VnfVirtualLinkDesc.	agreed
affinityOrAntiAffinityGroupId	M	0..N	Identifier	Identifier(s) of the affinity or anti-affinity group(s) the VnfVirtualLinkDesc belongs to. See note.	agreed
NOTE: Each identifier references an affinity or anti-affinity group which expresses affinity or anti-affinity relationship between the VL(s) using this VnfVirtualLinkDesc and the VL(s) using other VnfVirtualLinkDesc(s) in the same group.

7.1.8.5 VirtualLinkDescFlavour information element

7.1.8.5.1 Description

The VirtualLinkDescFlavour describes additional instantiation data for a given internal VL used in a DF.

7.1.8.5.2 Attributes

The attributes of the VirtualLinkDescFlavour information element shall follow the indications provided in table 7.1.8.5.2-1.

Table 7.1.8.5.2-1: Attributes of the VirtualLinkDescFlavour information element

Attribute	Qualifier	Cardinality	Content	Description	state
flavourId		1	Identifier	Identifies a flavour within a VnfVirtualLinkDesc. From M to O.	agreed
bitrateRequirements		0..1	LinkBitrateRequirements	Bitrate requirements for a VL created from this VirtualLinkDescFlavour. See note. From M to O.	removed in v2.4.1
qos		0..1	QoS	QoS of the VL. From M to O.	agreed
NOTE: If not present, it is assumed that the bitrate requirements can be derived from those specified in the VduCpd instances applicable to the internal VL. If present in both the VirtualLinkDescFlavour and the VduCpd instances applicable to the internal VL, the highest value takes precedence.

7.1.8.6 LinkBitrateRequirements information element

7.1.8.6.1 Description

The LinkBitrateRequirements information element describes the requirements in terms of bitrate for a VL.

7.1.8.6.2 Attributes

The attributes of the LinkBitrateRequirements information element shall follow the indications provided in table 7.1.8.6.2-1.

Table 7.1.8.6.2-1: Attributes of the LinkBitrateRequirements information element

Attribute	Qualifier	Cardinality	Content	Description	state
Root		1	Number	Throughput requirement of the link (e.g. bitrate of E-Line, root bitrate of E-Tree, aggregate capacity of E-LAN). From M to O.	agreed
Leaf		0..1	Number	Throughput requirement of leaf connections to the link when applicable to the connectivity type (e.g. for E-Tree and E?LAN branches). See note. From M to O.	agreed
NOTE: The present document does not specify the means to declare different bitrate requirements for leaf connections (e.g. E-LAN leaves).

7.1.8.7 InstantiationLevel information element

7.1.8.7.1 Description

The InstantiationLevel information element describes a given level of resources to be instantiated within a DF in term of the number of VNFC instances to be created from each VDU.

All the VDUs referenced in the level shall be part of the corresponding DF and their number shall be within the range (min/max) for this DF.

7.1.8.7.2 Attributes

The attributes of the InstantiationLevel information element shall follow the indications provided in table 7.1.8.7.2-1.

Table 7.1.8.7.2-1: Attributes of the InstantiationLevel information element

Attribute	Qualifier	Cardinality	Content	Description	state
levelId	M	1	Identifier	Uniquely identifies a level with the DF.	agreed
description	M	1	String	Human readable description of the level.	agreed
vduLevel	M	1..N	VduLevel	Indicates the number of instance of this VDU to deploy for this level.	agreed
scaleInfo	M	0..N	ScaleInfo	Represents for each aspect the scale level that corresponds to this instantiation level. scaleInfo shall be present if the VNF supports scaling.[e1]	agreed

7.1.8.8 ScaleInfo information element

7.1.8.8.1 Description

The ScaleInfo information element represents a scale level for a particular scaling aspect.

7.1.8.8.2 Attributes

The attributes of the ScaleInfo information element shall follow the indications provided in table 7.1.8.8.2-1.

Table 7.1.8.8.2-1: Attributes of the ScaleInfo information element (not used)

Attribute	Qualifier	Cardinality	Content	Description	state
aspectId	M	1	Identifier	Identifier of the scaling aspect.	agreed
scaleLevel	M	1	Integer	The scale level, greater than or equal to 0.	agreed
NOTE: Vertical scaling (scale up, scale down) is not supported in the present document.

7.1.8.9 VduLevel information element

7.1.8.9.1 Description

The VduLevel information element indicates for a given VDU in a given level the number of instances to deploy.

7.1.8.9.2 Attributes

The attributes of the VduLevel information element shall follow the indications provided in table 7.1.8.9.2-1.

Table 7.1.8.9.2-1: Attributes of the VduLevel information element

Attribute	Qualifier	Cardinality	Content	Description	state
vduId	M	1	Identifier (Reference to Vdu)	Uniquely identifies a VDU.	agreed
numberOf Instances	M	1	Integer	Number of instances of VNFC based on this VDU to deploy for this level.	agreed

7.1.8.10 QoS information element (defer further discussion later)

7.1.8.10.1 Description

The QoS information element describes QoS data for a given VL used in a DF.

7.1.8.10.2 Attributes

The attributes of the QoS information element shall follow the indications provided in table 7.1.8.10.2-1.

Table 7.1.8.10.2-1: Attributes of the QoS information element

Attribute	Qualifier	Cardinality	Content	Description	state
latency	M	1	Number	Maximum latency in ms.	agreed
packetDelayVariation	M	1	Number	Maximum jitter in ms.	agreed
packetLossRatio	M	0..1	Number	Maximum packet loss ratio. Cardinality is 0 if no packetLossRatio requirement exists.	agreed

7.1.8.11 LocalAffinityOrAntiAffinityRule information element

7.1.8.11.1 Description

The LocalAffinityOrAntiAffinityRule describes the affinity or anti-affinity rule applicable between the virtualization containers to be created based on a particular VDU, or between internal VLs to be created based on a particular VnfVirtualLinkDesc.

Per VNF, the affinity/anti-affinity rules defined using this information element, using the AffinityOrAntiAffinityGroup information element, and using the placement constraints in the GrantLifecycleOperation as defined in ETSI GS NFV?IFA 007 [i.3] should be conflict-free. In case of conflicts, the placement constraints in the GrantLifecycleOperation shall take precedence.

7.1.8.11.2 Attributes

The attributes of the LocalAffinityOrAntiAffinityRule information element shall follow the indications provided in table 7.1.8.11.2-1.

Table 7.1.8.11.2-1: Attributes of the LocalAffinityOrAntiAffinityRule information element

Attribute	Qualifier	Cardinality	Content	Description	state
type	M	1	Enum	Specifies whether the rule is an affinity rule or an anti-affinity rule.	agreed
scope	M	1	Enum	Specifies the scope of the rule, possible values are "NFVI-PoP", "Zone", "ZoneGroup", "NFVI-node".	agreed

7.1.8.12 AffinityOrAntiAffinityGroup information element

7.1.8.12.1 Description

The AffinityOrAntiAffinityGroup describes the affinity or anti-affinity relationship applicable between the virtualization containers to be created based on different VDUs, or between internal VLs to be created based on different VnfVirtualLinkDesc(s).

Per VNF, the affinity/anti-affinity rules defined using this information element, using the LocalAffinityOrAntiAffinityRule information element, and using the placement constraints in the GrantLifecycleOperation as defined in ETSI GS NFV-IFA 007 [i.3] should be conflict-free. In case of conflicts, the placement constraints in the GrantLifecycleOperation shall take precedence.

7.1.8.12.2 Attributes

The attributes of the AffinityOrAntiAffinityGroup information element shall follow the indications provided in table 7.1.8.12.2-1.

Table 7.1.8.12.2-1: Attributes of the AffinityOrAntiAffinityGroup information element

Attribute	Qualifier	Cardinality	Content	Description	state
groupId	M	1	Identifier	Identifies an affinity or anti-affinity group to which the affinity or anti-affinity rule applies.	agreed
type	M	1	Enum	Specifies whether the rule is an affinity rule or an anti-affinity rule.	agreed
scope	M	1	Enum	Specifies the scope of the rule, possible values are "NFVI-PoP", "Zone", "ZoneGroup", "NFVI-node".	agreed

7.1.9 Information elements related to Virtual Resource descriptors

7.1.9.1 Introduction

The clauses below define the Information elements related to Virtual Resource descriptors.

7.1.9.2 Information elements related to Virtual CPU

7.1.9.2.1 Introduction

The clauses below define the information elements related to Virtual CPU.

7.1.9.2.2 VirtualComputeDesc information element

7.1.9.2.2.1 Description

The VirtualComputeDesc information element supports the specification of requirements related to virtual compute resources.

7.1.9.2.2.2 Attributes

The attributes of the VirtualComputeDesc information element shall follow the indications provided in table 7.1.9.2.2.2?1.

If the VIM supports the concept of virtual compute resource flavours, it is assumed that a flavour is selected or created based on the information in the VirtualComputeDesc information element.

Table 7.1.9.2.2.2-1: Attributes of the VirtualComputeDesc information element

Attribute	Qualifier	Cardinality	Content	Description	state
virtualComputeDescId	M	1	Identifier	Unique identifier of this VirtualComputeDesc in the VNFD.	agreed
logicalNode	M	1..N	logicalNodeData	The logical Node requirements.	agreed
requestAdditionalCapabilities	M	0..N	RequestedAdditionalCapabilityData	Specifies requirements for additional capabilities. These may be for a range of purposes. One example is acceleration related capabilities. See clause 7.1.9.5.	agreed
computeRequirements	M	0..N	Not specified	Specifies compute requirements.	agreed
virtualMemory	M	1	VirtualMemoryData	The virtual memory of the virtualised compute. See clause 7.1.9.3.	agreed
virtualCpu	M	1	VirtualCpuData	The virtual CPU(s) of the virtualised compute. See clause 7.1.9.2.	agreed

7.1.9.2.3 VirtualCpuData information elements

7.1.9.2.3.1 Description

The VirtualCpuData information element supports the specification of requirements related to virtual CPU(s) of a virtual compute resource.

7.1.9.2.3.2 Attributes

The attributes of the VirtualCpuData information element shall follow the indications provided in table 7.1.9.2.3.2-1.

Table 7.1.9.2.3.2-1: Attributes of the VirtualCpuData information element

Attribute	Qualifier	Cardinality	Content	Description	state
cpuArchitecture	M	0..1	String	CPU architecture type. Examples are x86, ARM. The cardinality can be 0 during the allocation request, if no particular CPU architecture type is requested.	agreed
numVirtualCpu	M	1	Integer	Number of virtual CPUs.	agreed
virtualCpuClock	M	0..1	Number	Minimum virtual CPU clock rate (e.g. in MHz). The cardinality can be 0 during the allocation request, if no particular value is requested.	agreed
virtualCpuOversubscriptionPolicy	M	0..1	Not specified	The CPU core oversubscription policy e.g. the relation of virtual CPU cores to physical CPU cores/threads. The cardinality can be 0 during the allocation request, if no particular value is requested.	agreed
vduCpuRequirements	M	0..N	Not specified.	Array of key-value pair requirements on the Compute (CPU) for the VDU.	agreed
virtualCpuPinning	M	0..1	VirtualCpuPinningData	The virtual CPU pinning configuration for the virtualised compute resource. See clause 7.1.9.2.4.	agreed

7.1.9.2.4 VirtualCpuPinningData information element

7.1.9.2.4.1 Description

The VirtualCpuPinningData information element supports the specification of requirements related to the virtual CPU pinning configuration of a virtual compute resource.

7.1.9.2.4.2 Attributes

The attributes of the VirtualCpuPinningData information element shall follow the indications provided in table 7.1.9.2.4.2-1.

Table 7.1.9.2.4.2-1: Attributes of the VirtualCpuPinningData information element

Attribute	Qualifier	Cardinality	Content	Description	state
cpuPinningPolicy	M	0..1	Enum	Indicates the policy for CPU pinning. The policy can take values of "static" or "dynamic". The cardinality can be 0 during the allocation request, if no particular value is requested.	agreed
cpuPinningMap	M	0..1	Not specified	If cpuPinningPolicy is defined as "static", the cpuPinningMap provides the map of pinning virtual CPU cores to physical CPU cores/threads. Cardinality is 0 if cpuPinningPolicy has a different value than "static".	agreed, changed to viirtualCpuPinningRule in v2.4.1

7.1.9.3 Information elements related to Virtual Memory

7.1.9.3.1 Introduction

The clauses below define the information elements related to Virtual Memory.

7.1.9.3.2 VirtualMemoryData information element

7.1.9.3.2.1 Description

The VirtualMemoryData information element supports the specification of requirements related to virtual memory of a virtual compute resource.

7.1.9.3.2.2 Attributes

The attributes of the VirtualMemoryData information element shall follow the indications provided in table 7.1.9.3.2.2?1.

Table 7.1.9.3.2.2-1: Attributes of the VirtualMemoryData information element

Attribute	Qualifier	Cardinality	Content	Description	state
virtualMemSize	M	1	Number	Amount of virtual Memory (e.g. in MB).	agreed
virtualMemOversubscriptionPolicy	M	0..1	Not specified	The memory core oversubscription policy in terms of virtual memory to physical memory on the platform. The cardinality can be 0 during the allocation request, if no particular value is requested.	agreed
vduMemRequirements	M	0..N	Not specified.	Array of key-value pair requirements on the memory for the VDU.	agreed
numaEnabled	M	0..1	Boolean	It specifies the memory allocation to be cognisant of the relevant process/core allocation. The cardinality can be 0 during the allocation request, if no particular value is requested.	agreed

7.1.9.4 Information elements related to Virtual Storage

7.1.9.4.1 Introduction

The clauses below define the information elements related to Virtual Storage.

7.1.9.4.2 VirtualStorageDesc information element

7.1.9.4.2.1 Description

The VirtualStorageDesc information element supports the specifications of requirements related to virtual storage resources.

7.1.9.4.2.2 Attributes

The attributes of the VirtualStorageDesc information element shall follow the indications provided in table 7.1.9.4.2.2?1.

Table 7.1.9.4.2.2-1: Attributes of the VirtualStorageDesc information element

Attribute	Qualifier	Cardinality	Content	Description	state
id	M	1	Identifier	Unique identifier of this VirtualStorageDesc in the VNFD.	agreed
typeOfStorage	M	1	String	Type of virtualised storage resource (e.g. volume, object).	agreed
sizeOfStorage	M	1	Number	Size of virtualised storage resource (e.g. size of volume, in GB).	agreed
vduStorageRequirements	M	0..N	key value	An array of key-value pairs that articulate the storage deployment requirements. More specific key-value definitions to be added.	agreed
rdmaEnabled		0..1	Boolean	Indicate if the storage support RDMA. From M to O.	agreed
swImageDesc	M	0..1	Identifier (Reference to a SwImageDesc)	Software image to be loaded on the VirtualStorage Resource created based on this VirtualStorageDesc.	agreed

7.1.9.5 RequestedAdditionalCapabilityData information element

7.1.9.5.1 Description

This information element describes requested additional capability for a particular VDU. Such a capability may be for acceleration or specific tasks.

7.1.9.5.2 Attributes

The attributes of the RequestedAdditionalCapabilityData information element shall follow the indications provided in table 7.1.9.5.2-1.

Table 7.1.9.5.2-1: Attributes of the RequestedAdditionalCapabilityData information element

Attribute	Qualifier	Cardinality	Content	Description	state
requestedAdditionalCapabilityName	M	1	String	Identifies a requested additional capability for the VDU. ETSI GS NFV-IFA 002 [i.1] describes acceleration capabilities.	agreed
supportMandatory	M	1	Boolean	Indicates whether the requested additional capability is mandatory for successful operation.	agreed
minRequestedAdditionalCapabilityVersion	M	0..1	String	Identifies the minimum version of the requested additional capability.	agreed
preferredRequestedAdditionalCapabilityVersion	M	0..1	String	Identifies the preferred version of the requested additional capability.	agreed
targetPerformanceParameters	M	1..N	KeyValuePair	Identifies specific attributes, dependent on the requested additional capability type.	agreed

7.1.9.6 logicalNodeData information element

7.1.9.6.

1 Description

This information element describes compute, memory and I/O requirements that are to be associated with the logical node of infrastructure. The logical node requirements are a sub-component of the VDU level requirements. As an example for illustration purposes, a logical node correlates to the concept of a NUMA cell in libvirt terminology.

7.1.9.6.2 Attributes

The attributes of the logicalNodeData information element shall follow the indications provided in table 7.1.9.6.2-1.

Table 7.1.9.6.2-1: Attributes of the logicalNodeData information element

Attribute

Qualifier

Cardinality

Content

Description

state

logicalNodeRequirements

M

0..N

KeyValuePair

The logical node-level compute, memory and I/O requirements. An array of key-value pairs that articulate the deployment requirements.

This could include the number of CPU cores on this logical node, a memory configuration specific to a logical node (e.g. such as available in the Linux kernel via the libnuma library) or a requirement related to the association of an I/O device with the logical node.

agreed

7.1.10 Information elements related to scaling

7.1.10.1 Introduction

The clauses below define the information elements related to scaling.

7.1.10.2 ScalingAspect information element

7.1.10.2.1 Description

The ScalingAspect information element describes the details of an aspect used for horizontal scaling.

7.1.10.2.2 Attributes

The attributes of the ScalingAspect information element shall follow the indications provided in table 7.1.10.2.2-1.

Table 7.1.10.2.2-1: Attributes of the ScalingAspect information element

Attribute	Qualifier	Cardinality	Content	Description
id	M	1	Identifier	Unique identifier of this aspect in the VNFD.
name	M	1	String	Human readable name of the aspect.
description	M	1	String	Human readable description of the aspect.
associatedGroup	M	0..1	Identifier (Reference to VnfdElementGroup)	Reference to the group of Vnfd elements defining this aspect. If present, scaling for this aspect is limited to the elements of the group, but there is no assumption that all the elements of the groups will be increased at each step. See note 1.
maxScaleLevel	M	1	PositiveInteger	The maximum scaleLevel for total number of scaling steps that can be applied w.r.t. this aspect. The value of this attribute corresponds to the number of scaling steps can be applied to this aspect when scaling it from the minimum scale level (i.e. 0) to the maximum scale level defined by this attribute. See note 2.
NOTE 1: In the present release of the specification, support for modifying the internal VNF topology during the scaling of the internal VLs, is not required. NOTE 2: A scaling step is the smallest increment by which a VNF can be scaled for a particular aspect. Scaling by a single step does not imply that only one VNFC instance is created or removed. It means that one or more VNFC instances are created from the same VDU or from different VDUs, or that a more complex setup occurs.

7.1.11 Information elements related to monitoring

7.1.11.1 Introduction

The clause below define the information elements related to monitoring.

7.1.11.2 VnfIndicator information element

7.1.11.2.1 Description

The VnfIndicator information element defines the indicator the VNF supports.

7.1.11.2.2 Attributes

The attributes of the VnfIndicator information element shall follow the indications provided in table 7.1.11.2.2-1.

Table 7.1.11.2.2-1: Attributes of the VnfIndicator information element

Attribute	Qualifier	Cardinality	Content	Description	state
id	M	1	Identifier	Unique identifier.	agreed
name	M	0..1	String	The human readable name of the VnfIndicator.	agreed
indicatorValue	M	1..N	String	Defines the allowed values or value ranges of this indicator.	agreed
source	M	1	Enum	Describe the source of the indicator. The possible values are: VNF. EM. Both. This tells the consumer where to send the subscription request.	agreed

7.1.11.3 MonitoringParameterinformation element

7.1.11.3.1 Description

This information element specifies the virtualised resource related performance metrics to be tracked by the VNFM, e.g. for auto-scaling purposes. The VNFM collects the values of performance metrics identified by this information element from the VIM(s) using one or more locally initiated PM Jobs. These values can be used as inputs to auto-scaling rules.

7.1.11.3.2 Attributes

The attributes of the MonitoringParameter information element shall follow the indications provided in
table 7.1.11.3.2-1.

Table 7.1.11.3.2-1: Attributes of the MonitoringParameter information element

Attribute	Qualifier	Cardinality	Content	Description	state
id	M	1	Identifier	Unique identifier of the monitoring parameter.	agreed
name	M	0..1	String	Human readable name of the monitoring parameter.	agreed
performanceMetric	M	1	String	Identifies the virtualised resource performance metric.	agreed

7.1.12 VnfConfigurableProperties information element (not used)

7.1.12.1 Description

This information element defines the configurable properties of a VNF (e.g. related to auto scaling and auto healing). For a VNF instance, the value of these properties can be modified by the VNFM.

7.1.12.2 Attributes

The attributes of the VnfConfigurableProperties information element shall follow the indications provided in table 7.1.12.2-1.

Table 7.1.12.2-1: Attributes of the VnfConfigurableProperties information element

Attribute	Qualifier	Cardinality	Content	Description	state
isAutoscaleEnabled		0..1	Boolean	It permits to enable (TRUE)/disable (FALSE) the auto-scaling functionality. See note. From M to O.	agreed
isAutohealEnabled		0..1	Boolean	It permits to enable (TRUE)/disable (FALSE) the auto-healing functionality. See note. From M to O.	agreed
additionalConfigurableProperty	M	0..N	Not specified	It provides VNF specific configurable properties that can be modified using the ModifyVnfInfo operation.	agreed
NOTE: A cardinality of "0" indicates that configuring this present VNF property is not supported.

7.1.13 LifeCycleManagementScript information element

7.1.13.1 Description

Clause 7.1.13.2 defines the information elements related to the lifecycle management script for the VNF.

7.1.13.2 Attributes

The content of the LifeCycleManagementScript type shall comply with the indications provided in table 7.1.13.2-1.

Table 7.1.13.2-1: Attributes of the LifeCycleManagementScript information element

Attribute	Qualifier	Cardinality	Content	Description	state
name			String	Name of the LCM operation.
event	M	1..N	String	Describes VNF lifecycle event(s) or an external stimulus detected on a VNFM reference point which trigger the operation. See notes 1 and 2.	agreed
script	M	1	Not specified	Includes a VNF LCM script (e.g. written in a DSL as specified in requirement VNF_PACK.LCM.001) triggered to react to one of the events listed in the event attribute.	agreed
NOTE 1: A minimum set of lifecycle events triggered internally by the VNFM includes: start instantiation, end instantiation, start scaling, end scaling, start healing, end healing, start termination, end termination, start VNF flavour change, end VNF flavour change, start VNF operation state change, end VNF operation state change, start change external VNF connectivity, end change external VNF connectivity. NOTE 2: A minimum set of external stimulus includes: the receipt of request message of instantiation, scaling, healing, termination, change of VNF flavour, change of external VNF connectivity, change of the operation state of the VNF or the receipt of VNF indication with a changed value.

7.1.14 VnfInfoModifiableAttributes information element (not used)

7.1.14.1 Description

This information element defines the VNF-specific extension and metadata attributes of the VnfInfo that are writeable via the ModifyVnfInfo operation.

7.1.14.2 Attributes

The attributes of the VnfInfoModifiableAttributes information element shall follow the indications provided in table 7.1.14.2-1.

Table 7.1.14.2-1: Attributes of the VnfInfoModifiableAttributes information element

Attribute	Qualifier	Cardinality	Content	Description	state
extension	M	0..N	Not specified	"Extension" attributes of VnfInfo that are writeable. See note.	agreed
metadata	M	0..N	Not specified	"Metadata" attributes of VnfInfo that are writeable. See note.	agreed
NOTE: The exact data structure describing the attribute is left for data model solution specification, but it should include: name, and any constraints on the values, such as ranges, predefined values, etc.

7.1.15 NFDescription information element

7.1.15.1 Description

This information element defines the description of the network function.

7.1.15.2 Attributes

Table 7.1.15.2-1: Attributes of the NFDescription information element

Attribute	Qualifier	Cardinality	Content	Description	state: removed
nfType		1	String	Generic description of the type of Network Device (VNF and PNFs). Examples: Router Switch, Firewall, Application Server.
nfRole		1	String	Short code that defines a Network Device that the Vendor Software or PNF is providing; Examples of Network_Role: vCE, vARM, vBNG, vPE, vASE, vSeGW (resource models in ASDC).
nfFunction		1	String	Provides an English description of Network function that the specific VNF or PNF deployment is providing. Assigned as part of the customization of a VNF in a service: SDN Gateway, Provider Edge Router, Cache.
nfNamingCode		1	String	Short code that is used in VNF naming. The NF Code can be the same value or a different value than the NF Role. Naming convention examples: NVP VF Naming Convention: <complex_code><sequence_number><function_code> US Name Example: abrva301vn2 ; MOW Name Example: GBLOND1001vn2
NOTE: The exact data structure describing the attribute is left for data model solution specification, but it should include: name, and any constraints on the values, such as ranges, predefined values, etc.