NetworkServiceDescriptorModel 

Contents

NetworkServiceDescriptorModel

NetworkServiceDescriptor 

The NSD class is a deployment template whose instances are used by the NFVO for the lifecycle management of NSs. For all attributes in this class, the Producer is SDC and the Consumer is SDC/UUI/VFC

Applied stereotypes:

OpenModelClass
support: MANDATORY
Preliminaryry

AttributeName	Type	Mult.	Stereotypes	Description
nsdIdentifier	Identifier	1	Preliminary OpenModelAttribute isInvariant: true valueRange: no range constraint support: MANDATORY	Identifier of this NSD class. It globally uniquely identifies an instance of the NSD.
designer	String	1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Identifies the designer of the NSD.
version	Version	1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Identifies the version of the NSD.
nsdName	String	1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Provides the human readable name of the NSD.
nsdInvariantId	Identifier	1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Identifies an NSD in a version independent manner. This attribute is invariant across versions of NSD.
autoScalingRule	Rule	0..*	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Specifies a rule to trigger a scaling action on a NS instantiated according to the NSD. NOTE 1: The rule is based on a combination of assertions on the values of virtualised resource- related performance metrics and VNF Indicators identified by the monitoredInfo attribute. NOTE 2: There may be multiple data sources (each identified as monitoredInfo) per rule
monitoredInfo	MonitoredData	0..*	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Identifies either a virtualised resource- related performance metric or a VNF Indicator.
lifeCycleManagementScript	NsLifeCycleManagementScript	0..*	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Provides a life cycle management script written in a Domain Specific Language (DSL).
_virtualLinkDesc	NsVirtualLinkDesc	0..*	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Provides the constituent VLDs. Cardinality of 0 means that the NS is a NF set with unspecified connectivity.
_vnfdId	Vnfd	0..*	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY PassedByReference	References the VNFD of a constituent VNF.
_pnfdId	Pnfd	0..*	Experimental OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY PassedByReference	References the PNFD of a constituent PNF.

NsVirtualLinkDesc 

The NsVirtualLinkDesc class provides general information enabling the instantiation of virtual links. For all attributes in this class the Producer is SDC and the Consumer is SDC/UUI/VFC.

Parent class: VirtualLinkDesc

Applied stereotypes:

OpenModelClass
support: MANDATORY
Preliminaryry

Attribute Name	Type	Mult.	Stereotypes	Description
vitualLinkDescProvider	String	0..1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Defines the organization generating the VLD.
virtuaLinkDescVersion	Version	1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Specifies the version of the VLD.
VirtualLinkDf	VirtualLinkDf	1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Specifies properties for instantiating a VL according to a specific flavour.
virtualLinkDescId	Identifier	1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Uniquely identifies a VLD in the parent descriptor. For VnfVirtualL inkDesc, the parent descriptor is the VNFD. For NsVirtualLi- nkDesc, the parent descriptor is the NSD. Note: the description of this class are different in ETSI GS NFV IFA 011 and ETSI GS NFV IFA 014. The present definition merges the 2 definitions.
connectivityType	ConnectivityType	1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Specifies the protocol exposed by a VL and the flow pattern supported by the VL.
description	String	0..1	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Provides human-readable information on the purpose of the VL (e.g. control plane traffic).

Pnfd 

The Pnfd class is a deployment template enabling on-boarding PNFs and referencing them from an NSD. It focuses on connectivity aspects only.

Parent class: NetworkFunctionDesc

Applied stereotypes:

OpenModelClass
support: MANDATORY
Experimental

Vnfd 

The Vnfd class is a deployment template enabling on-boarding VNFs and referencing them from an NSD.

ConnectivityType 

The ConnectivityType datatype specifies the protocol exposed by a VL and the flow pattern supported by the VL.

Attribute Name

Type

Mult.

Access

Stereotypes

Description

layerProtocol

LayerProtocol

1

RW

Preliminary

OpenModelAttribute

isInvariant:
false
valueRange:
no range constraint
support:
MANDATORY

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

flowPatternrn

String

0..1

RW

Preliminary

OpenModelAttribute

isInvariant:
false
valueRange:
no range constraint
support:
MANDATORY

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

MonitoredData(TBD)

The MonitoredData datatype identifies information to be monitored during the lifetime of a network service instance.

NsLifeCycleManagementScript 

The LifeCycleManagementScript information element specifies a script for the NS.

Attribute Name

Type

Mult.

Access

Stereotypes

Description

event

String

1..*

RW

OpenModelAttribute

isInvarriant:
false
valueRange:
no range constraint
support:

MANDATORY

Describes NS lifecycle event(s) or an external stimulus detected on an NFVO reference point. NOTE 1: A minimum set of NS lifecycle events triggered internally by the NFVO includes: start instantiation, end instantiation, start scaling, end scaling, start healing, end healing, start termination, end termination, start update, end update. NOTE 2: A minimum set of external stimulus includes: the receipt of request message of instantiation, scaling, healing, termination, update of NS.

script

String

1

RW

OpenModelAttribute

isInvarriant:
false
valueRange:
no range constraint
support:
MANDATORY

Includes an NS LCM script (e.g., written in a DSL) triggered to react to one of the events listed in the event attribute.

NsQoS 

The NsQoS datatype specifies quality of service parameters applicable to a NS VL.

Attribute Name	Type	Mult.	Access	Stereotypes	Description
priority	Integer	0..1	RW	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Specifies the priority level in case of congestion on the underlying physical links.
latency	Number	1	RW	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Maximum latency in ms.
packetDelayVariation	Number	1	RW	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Maximum jitter in ms.
packetLossRatio	Number	0..1	RW	Preliminary OpenModelAttribute isInvariant: false valueRange: no range constraint support: MANDATORY	Maximum packet loss ratio. Cardinality is 0 if no packetLossRatio requirement exists.

VirtualLinkDf 

The VirtualLinkDf datatype specifies properties for instantiating a VL according to a specific flavour.

Attribute Name

Type

Mult.

Access

Stereotypes

Description

flavourId

Identifier

1

RW

Preliminary

OpenModelAttribute

isInvariant:
false
valueRange:
no range constraint
support:
MANDATORY

Identifies this VirtualLinkDF datatype within a VLD.

qos

NsQoS

0..1

RW

Preliminary

OpenModelAttribute

isInvariant:
false
valueRange:
no range constraint
support:
MANDATORY

Specifies quality of service parameters applicable to a VL.

serviceAvaibilityLevel

ServiceAvailabilityLevel

0..1

RW

Preliminary

OpenModelAttribute

isInvariant:
false
valueRange:
no range constraint
support:
MANDATORY

Specifies one of the three levels defined in ETSI GS NFV-REL 001:

Level1
Level2
Level3

ServiceAvailabilityLevel 

Specifies one of the three levels defined in ETSI GS NFV-REL 001: Level 1 Level 2 Level 3

Contains Enumeration Literals:

LEVEL_1:
LEVEL_2:
LEVEL_3: