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.

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2 Comments

  1. Hello, Usually, we do not describe run time attributes like IP address in the Information Model. From ETSI perspective, these attributes exist in IFA 15 and taken in to account in the data model. 

  2. ETSI NFV IM is in 2 parts: 

    • the Core model that is higher level
    • the Interface Model that mapped to the various IFA GSs. 

    The interface model, being aligned to IFA GSs, is more detailed than a usual IM. It is sort of half way between a DM (as it can be found in SOL) and an IM.