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NetworkService Model

NSD Model discussion - 20180326

 


Network service DM:

Design-Time Data Model: Network Service


Class:NSD

derived from ServiceComponentDescriptor

R2+ AttributesRequiredCardinalityContentDescriptionProducerConsumerETSI IFA014
nestedNsdIdM0..NStringReferences the NSD of a constituent nested NS. SDCSDC/UUI/VFCnestedNsdId
vnfdidM0..NString

References the VNFD of a constituent VNF.

SDCSDC/UUI/VFCvnfdid
pnfdIdM0..NString

References the PNFD of a constituent PNF.

SDCSDC/UUI/VFCpnfdId
virtualLinkDescM0..NStringProvides the constituent VLDs.SDCSDC/UUI/VFCvirtualLinkDesc
sapd

M

0..N

Sapd

Provides the descriptor of a service access point of the network service.

SDCSDC/UUI/VFCsapd
vnffgd

M

0..N

Vnffgd

Provides the descriptors of the applicable forwarding graphs.

SDCSDC/UUI/VFCvnffgd
monitoredInfo

M

0..N

MonitoredData

Identifies either a virtualised resource-related performance metric or a VNF Indicator.

SDCSDC/UUI/VFCmonitoredInfo

autoScalingRule

M

0..N

Rule

Specifies a rule to trigger a scaling action on a NS instantiated according to the NSD.

SDCSDC/UUI/VFCautoScalingRule

lifeCycleManagementScript

M

0..N

LifeCycleManagementScript

Provides a life cycle management script written in a Domain Specific Language (DSL).

SDCSDC/UUI/VFClifeCycleManagementScript

nsDf

M

1..N

NsDf

Identifies a DF within the scope of an NSD.

SDCSDC/UUI/VFCnsDf

security

M

1

SecurityParameters

Provides a signature to prevent tampering.

SDCSDC/UUI/VFCsecurity


Class:NsVirtualLink

Attribute NameTypeMultiplicityDescriptionApplied StereotypesProducerConsumerETSI IFA014

virtualLinkDescId

Identifier

1

Identifier of the NsVirtualLinkDesc information element. It uniquely identifies a VLD.

support: MANDATORYSDCSDC/UUI/VFC

virtualLinkDescId

vitualLinkDescProviderString0..1Defines the organization generating the VLD.

support:

Option

SDCSDC/UUI/VFCvitualLinkDescProvider
virtualLinkDescVersionString1Specifies the version of the VLD.support: MANDATORYSDCSDC/UUI/VFCvirtualLinkDescVersion
connectivityTypeConnectivityType1

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

support: MANDATORYSDCSDC/UUI/VFCconnectivityType
virtualLinkDfVirtualLinkDf1..N

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

support: MANDATORYSDCSDC/UUI/VFCvirtualLinkDf
testAccessString0..NSpecifies test access facilities expected on the VL (e.g. none, passive monitoring, or active (intrusive) loopbacks at endpoints).support: MANDATORYSDCSDC/UUI/VFCtestAccess
descriptionString0..1Provides human-readable information on the purpose of the VL (e.g. control plane traffic).support: MANDATORYSDCSDC/UUI/VFCdescription
securitySecurityParameters0..1

Provides a signature to prevent tampering.

support: MANDATORYSDCSDC/UUI/VFCsecurity

Class: ConnectivityType

Attribute Name

Type

Multiplicity

Description

Applied Stereotypes

layerProtocol

Enum

1

Identifies the protocol this VL gives access to (Ethernet, MPLS, ODU2, IPV4, IPV6, Pseudo-Wire).

support: MANDATORY

flowPatternString0..1Identifies the flow pattern of the connectivity (Line, Tree, Mesh).

support: MANDATORY

Class: VirtualLinkDf

Attribute Name

Type

Multiplicity

Description

Applied Stereotypes

flavourId

Identifier

1

Identifies a flavour within a VnfVirtualLinkDesc.

support: MANDATORY
qosQoS0..1QoS of the VL.support: MANDATORY
serviceAvaibilityLevelEnum0..1

Specifies one of the three levels defined in ETSI
GS NFV-REL 001 [i.5]:
• Level 1.
• Level 2.
• Level 3.

support: MANDATORY

Class: QoS

Attribute Name

Type

Multiplicity

Description

Applied Stereotypes

latency

Number

1

Maximum latency in ms.

support: MANDATORY
packetDelayVariationNumber1Maximum jitter in ms.support: MANDATORY
packetLossRatioNumber0..1Maximum packet loss ratio. Cardinality is 0 if no packetLossRatio requirement exists.support: MANDATORY
priorityInteger0..1

Specifies the priority level in case of congestion on the underlying physical links.

support: MANDATORY


Class:OpenstackNetwork

Derived from Class:NsVirtualLink.

Implement the openstack  subnetwork/network model

 

Attribute

Qualifier

Cardinality

Content

Description

ProducerConsumer

cidr

M

1

String

The CIDR of the subnet.

SDCSDC/UUI/VFC

allocationPools

M

0..N

KeyValue

Allocation pools with start and end IP addresses for this subnet. If allocation_pools are not specified, OpenStack Networking automatically allocates pools for covering all IP addresses in the CIDR, excluding the address reserved for the subnet gateway by default.

SDCSDC/UUI/VFC

gatewayIp

M

0..1

String

Gateway IP of this subnet. If the value is null that implies no gateway is associated with the subnet. If the gateway_ip is not specified, OpenStack Networking allocates an address from the CIDR for the gateway for the subnet by default.

SDCSDC/UUI/VFC

dhcpEnabled

M

0..1

Boolean

Indicates whether dhcp is enabled or disabled for the subnet. Default is true.

SDCSDC/UUI/VFC
NetworkNameM1StringHuman-readable name of the networkSDCSDC/UUI/VFC
networkIdO0..1StringThe network id that represents an existing Network instance in the underlying cloud infrastructure.SDCSDC/UUI/VFC

segmentationId

O

0..1

String

The ID of the isolated segment on the physical network. The network_typeattribute defines the segmentation model. For example, if the network_type value is vlan, this ID is a vlan identifier. If the network_type value is gre, this ID is a gre key.

SDCSDC/UUI/VFC

networkType

M

0..1

Enum

The type of physical network that this network should be mapped to. For example, flatvlanvxlan, or gre. Valid values depend on a networking back-end.

SDCSDC/UUI/VFC

physicalNetwork

M

0..1

String

The physical network where this network should be implemented. The Networking API v2.0 does not provide a way to list available physical networks. For example, the Open vSwitch plug-in configuration file defines a symbolic name that maps to specific bridges on each compute host

SDCSDC/UUI/VFC

vlanTransparent

M

0..1

Boolean

Indicates the VLAN transparency mode of the network, which is VLAN transparent (true) or not VLAN transparent (false)

SDCSDC/UUI/VFC

Class: Vnfd

refer to resource definition

Class: VnfExtCp

refer to resource definition

 

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