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Attribute

Qualifier

Cardinality

Content

Description

AvailabilityZone

M

0..1

String

AvailabilityZone

HostAggregates

M

0..1

String

HostAggregates

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

virtualLinkDescId

M

1

Identifier

Unique identifier of this internal VLD in VNFD.

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.

 

cidr

M

1

String

TBA.   subnet CIDR Initiation parameter.

allocationPools

M

0..N

KeyValue

TBA.   [starting IP address, ending IP address]. Initiation parameter.

gatewayIp

M

0..1

String

TBA. Gateway IP address. Initiation parameter.

networkName

M

1

String

TBA. Network name. Initiation parameter.

segmentationId

M

0..1

String

VLAN   ID. Initiation parameter.

networkType

M

0..1

Enum

VLAN?VxLAN

physicalNetwork

M

0..1

String

The physical network. Initiation parameter. Default to “default” if not specified otherwise.

dhcpEnabled

M

0..1

Boolean

Indicating   whether DHCP is supported. Default to “false” if not specified otherwise.

vlanTransparent

M

0..1

Boolean

Indicating   whether “VLAN Transparent Mode” is supported. Default to “False” if not   specified otherwise.

connectivityType

M

1

ConnectivityType

See clause   7.1.7.3.

testAccess

 

0..N

String

Specifies   test access facilities expected on the VL (e.g. none, passive monitoring, or   active (intrusive) loopbacks at endpoints).

 

description

M

0..1

String

Provides   human-readable information on the purpose of the VL (e.g. control plane   traffic).

monitoringParameter

 

0..N

MonitoringParameter

Defines the virtualised resources monitoring   parameters on VLD level. MonitoringParameter is defined in   clause 7.1.11.3.


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

layerProtocol

M

1

Enum

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

flowPattern

 

0..1

String

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

From   M to O.


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

flavourId

M

1

Identifier

Identifier of this DF within the VNFD.

description

M

1

String

Human readable description of the DF.

vduProfile

M

1..N

VduProfile

Describes additional instantiation data for the   VDUs used in this flavour.

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.

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.

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).

scalingAspect

M

0..N

ScalingAspect

The scaling aspects supported by this DF of the   VNF. scalingAspect shall be present if the VNF supports scaling.

placementGroup

 

0..N

Not Specified

Not   used.

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

vduId

M

1

Identifier (Reference to Vdu)

Uniquely identifies a VDU.

 

 

 

 

 

minNumberOfInstances

M

1

Integer

Minimum number of instances of the VNFC based   on this VDU that is permitted to exist for this flavour.

maxNumberOfInstances

M

1

Integer

Maximum number of instances of the VNFC based   on this VDU that is permitted to exist for this flavour.

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.

affinityOrAntiAffinityGroupId

M

0..N

Identifier

Identifier(s) of the affinity or anti-affinity group(s) the VDU belongs to. See note.

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

vnfVirtualLinkDescId

M

1

Identifier (Reference to VnfVirtualLinkDesc)

Uniquely identifies a Vnf VLD.

flavourId

M

1

Identifier (Reference to VirtualLinkDescFlavour)

Identifies a flavour within the VnfVirtualLinkDesc.

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.

affinityOrAntiAffinityGroupId

M

0..N

Identifier

Identifier(s)   of the affinity or anti-affinity group(s) the VnfVirtualLinkDesc   belongs to. See note.

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

flavourId


1

Identifier

Identifies a flavour within a VnfVirtualLinkDesc.

From   M to O.

bitrateRequirements


0..1

LinkBitrateRequirements

Bitrate requirements for a VL created from this   VirtualLinkDescFlavour. See note.

From   M to O.

qos

 

0..1

QoS

QoS of the VL.

From   M to O.

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

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.

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.

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

levelId

M

1

Identifier

Uniquely identifies a level with the DF.

description

M

1

String

Human readable description of the level.

vduLevel

M

1..N

VduLevel

Indicates the number of instance of this VDU to   deploy for this level.

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] 

 

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

aspectId

M

1

Identifier

Identifier of the scaling aspect.

scaleLevel

M

1

Integer

The scale level, greater than or equal to 0.

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

vduId

M

1

Identifier (Reference to Vdu)

Uniquely identifies a VDU.

numberOf Instances

M

1

Integer

Number of instances of VNFC based on this VDU   to deploy for this level.

 

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

latency

M

1

Number

Maximum latency in ms.

packetDelayVariation

M

1

Number

Maximum jitter in ms.

packetLossRatio

M

0..1

Number

Maximum packet loss ratio. Cardinality is 0 if   no packetLossRatio requirement exists.

 

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

type

M

1

Enum

Specifies whether the rule is an   affinity rule or an anti-affinity rule.

scope

M

1

Enum

Specifies   the scope of the rule, possible values are "NFVI-PoP", "Zone", "ZoneGroup",   "NFVI-node".

 

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

groupId

M

1

Identifier

Identifies an affinity or anti-affinity   group to which the affinity or anti-affinity rule applies.

type

M

1

Enum

Specifies whether the rule is an   affinity rule or an anti-affinity rule.

scope

M

1

Enum

Specifies the scope of the rule, possible values are "NFVI-PoP", "Zone", "ZoneGroup", "NFVI-node".

 

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

virtualComputeDescId

M

1

Identifier

Unique   identifier of this VirtualComputeDesc in the VNFD.

logicalNode

M

1..N

logicalNodeData

The logical Node   requirements.

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.

computeRequirements

M

0..N

Not specified

Specifies compute requirements.

virtualMemory

M

1

VirtualMemoryData

The virtual   memory of the virtualised compute. See clause 7.1.9.3.

virtualCpu

M

1

VirtualCpuData

The virtual CPU(s)   of the virtualised compute. See clause 7.1.9.2.

 

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

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.

numVirtualCpu

M

1

Integer

Number of   virtual CPUs.

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.

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.

vduCpuRequirements

M

0..N

Not specified.

Array of key-value pair   requirements on the Compute (CPU) for the VDU.

virtualCpuPinning

M

0..1

VirtualCpuPinningData

The virtual CPU   pinning configuration for the virtualised compute resource. See   clause 7.1.9.2.4.

 

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

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.

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".

 

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

virtualMemSize

M

1

Number

Amount of   virtual Memory (e.g. in MB).

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.

vduMemRequirements

M

0..N

Not specified.

Array of key-value pair   requirements on the memory for the VDU.

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.

 

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

id

M

1

Identifier

Unique   identifier of this VirtualStorageDesc in the VNFD.

typeOfStorage

M

1

String

Type of   virtualised storage resource
  (e.g. volume, object).

sizeOfStorage

M

1

Number

 

Size of   virtualised storage resource
  (e.g. size of volume, in GB).

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.

rdmaEnabled

 

0..1

Boolean

Indicate if   the storage support RDMA.

From M to O.

swImageDesc

M

0..1

Identifier (Reference to a SwImageDesc)

Software image   to be loaded on the VirtualStorage Resource created based on this   VirtualStorageDesc.


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

requestedAdditionalCapabilityName

M

1

String

Identifies   a requested additional capability for the VDU. ETSI   GS NFV-IFA 002 [i.1] describes   acceleration capabilities.

supportMandatory

M

1

Boolean

Indicates   whether the requested additional capability is mandatory for successful   operation.

minRequestedAdditionalCapabilityVersion

M

0..1

String

Identifies   the minimum version of the requested additional capability.

preferredRequestedAdditionalCapabilityVersion

M

0..1

String

Identifies the preferred version of the   requested additional capability.

targetPerformanceParameters

M

1..N

KeyValuePair

Identifies specific attributes, dependent on   the requested additional capability type.

 

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

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.

 

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

id

M

1

Identifier

Unique identifier.

name

M

0..1

String

The human readable name of the VnfIndicator.

indicatorValue

M

1..N

String

Defines the   allowed values or value ranges of this indicator.

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.

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

id

M

1

Identifier

Unique identifier of the monitoring parameter.

name

M

0..1

String

Human readable name of the monitoring parameter.

performanceMetric

M

1

String

Identifies the virtualised resource performance   metric.

 

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

isAutoscaleEnabled

 

0..1

Boolean

It permits to enable (TRUE)/disable (FALSE) the   auto-scaling functionality. See note.
  From M to O.

isAutohealEnabled

 

0..1

Boolean

It permits to enable (TRUE)/disable (FALSE) the   auto-healing functionality. See note.
  From M to O.

additionalConfigurableProperty

M

0..N

Not specified

It provides VNF   specific configurable properties that can be modified using the ModifyVnfInfo   operation.

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

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.

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.

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

extension

M

0..N

Not specified

"Extension" attributes of VnfInfo   that are writeable. See note.

metadata

M

0..N

Not specified

"Metadata" attributes of VnfInfo that   are writeable. See note.

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

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.