Allotted Resource

                                             

 

Classes

An AllottedLink is a link provided (or allotted) by some service instance.   The Allottedlink may be incorporated into the topology of some consuming service like other links.

Parent class: LinkDesc 

Applied stereotypes:

  • OpenModelClass
    • support: MANDATORY

 

Anfd

An Anfd  (Allotted Network Function) is a network function provided (or allotted) by some service instance.   The allotted network function may be incorporated into the topology of some consuming service like other network functions.  Note:  the allotted network function is no longer derived from some allotted resource parent.

Parent class: NetworkFunctionDesc

Applied stereotypes:

  • OpenModelClass
    • support: MANDATORY
  • Experimental

 

 

LinkDesc

A communication channel that connects two or more devices, nodes, or entities.

Parent class: ResourceDesc (ResourceSpecification)

Applied stereotypes:

  • OpenModelClass
    • support: MANDATORY
  • Preliminary

 

Attribute   Name

Type

Mult.

Stereotypes

Description

virtualLinkDescId

Identifier

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Unique identifier of this internal VLD in VNFD.

 

 

connectivityType

ConnectivityType

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Specifies the protocol exposed by a VL and the flow   pattern supported by the VL.

 

 

testAccess

String

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

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

 

 

description

String

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

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

 

 

monitoringParameter

MonitoringParameter

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Defines the virtualised resources monitoring   parameters on VLD level.

 

 

_virtuaLlinkDescFlavour

VirtualLinkDescFlavour

1..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Describes a specific flavour of the VL with specific   bitrate requirements.

 

 

 

NetworkFunctionDesc

A NetworkFunction is a functional block within a network infrastructure that has well-defined external interfaces and well-defined functional behaviour.

Parent class: ResourceDesc (ResourceSpecification)

Applied stereotypes:

  • OpenModelClass
    • support: MANDATORY
  • Experimental

 

 

ResourceDesc (ResourceSpecification)

ResourceDesc represents physical and non-physical (virtual) components which are owned / managed by the business or provided by a Supplier and are used (directly or indirectly) to construct services.  In this context, a resource is something that goes into a resource catalog from which services are composed.

Applied stereotypes:

  • OpenModelClass
    • support: MANDATORY

 

 

 

Vnfd

A Vnfd, or VNF Descriptor, is template which describes a VNF in terms of deployment and operational behaviour requirements. It also contains connectivity, interface and virtualised resource requirements.  References: tosca-nfv-YAML-v1.0-wd05-rev02 (tosca.nodes.nfv.vnfd, but node details are not defined) ETSI GS NFV-IFA 011 V2.1.3 (VNFD)

Parent class: NetworkFunctionDesc

Applied stereotypes:

  • OpenModelClass
    • support: MANDATORY
  • Preliminary

 

Attribute   Name

Type

Mult.

Stereotypes

Description

vnfProvider

String

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Provider of the VNF and of the VNFD.

 

 

vnfProductName

String

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Name to identify the VNF Product. Invariant for the   VNF Product lifetime.

 

 

vnfSoftwareVersion

String

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Software version of the VNF. This is changed when   there is any change to the software that is included in the VNF Package.

 

 

vnfdVersion

String

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Identifies the version of the VNFD.

 

 

vnfProductInfoName

String

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Human readable name for the VNF Product. Can change   during the VNF Product lifetime.

 

 

vnfProductInfoDescription

String

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Human readable description of the VNF Product. Can   change during the VNF Product lifetime.

 

 

vnfmInfo

String

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Identifies VNFM(s) compatible with the VNF described   in this version of the VNFD.

 

 

localizationLanguage

String

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Information about localization languages of the VNF   (includes e.g. strings in the VNFD).    NOTE: This allows to provide one or more localization languages to   support selecting a specific localization language at VNF instantiation time.

 

 

modifiableAttributes

VnfInfoModifiableAttributes

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Defines the VNF-specific extension and metadata   attributes of the VnfInfo that are writeable via the ModifyVnfInfo operation.

 

 

vnfdId

Identifier

1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Identifier of this VNFD information element. This   attribute shall be globally unique.    NOTE: 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.

 

 

defaultLocalizationLanguage

String

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Information about localization languages of the VNF   (includes e.g. strings in the VNFD).    NOTE: This allows to provide one or more localization languages to   support selecting a specific localization language at VNF instantiation time.

 

 

configurableProperties

VnfConfigurableProperties

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Describes the configurable properties of the VNF   (e.g. related to auto scaling and auto healing).

 

 

lifecycleManagementScript

LifecycleManagementScript

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Includes a list of events and corresponding management   scripts performed for the VNF.

 

 

logo

String

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

File path of the vendor specified logo.

 

 

guide

String

0..1

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

UUID of the vendor guide/documentation which is   attached to VNF and can be downloaded from the model.

 

 

_vdu

Vdu

1..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Virtualisation Deployment Unit.

 

 

_vnfExtCpd

VnfExtCpd

1..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Describes external interface(s) exposed by this VNF   enabling connection with a VL.

 

 

_deploymentFlavour

VnfDf

1..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Describes specific DF(s) of a VNF with specific   requirements for capacity and performance.

 

 

_vnfIndicator

VnfIndicator

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Declares the VNF indicators that are supported by   this VNF.

 

 

_virtualComputeDesc

VirtualComputeDesc

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Defines descriptors of virtual compute resources to   be used by the VNF.

 

 

_virtualStorageDesc

VirtualStorageDesc

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Defines descriptors of virtual storage resources to   be used by the VNF.

 

 

_intVirtuallinkdesc

LinkDesc

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Represents the type of network connectivity mandated   by the VNF provider between two or more CPs which includes at least one   internal CP.

 

 

_vnfReservedCpd

VduCpd

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

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.

 

 

_elementGroup

VnfdElementGroup

0..*

OpenModelAttribute

  • isInvariant: false
  • valueRange:  no range constraint
  • support:    MANDATORY

Preliminary

Describes the associated elements of a VNFD for a   certain purpose during VNF lifecycle management.

 

 

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5 Comments

  1. Gil Bullard

    Here are the slides that I shared on the 10/22/2018 Modeling Call on the topic of Allotted Resource (a.k.a., Allotted Network Function). 

  2. Srinivasa Vellanki

    TM Forum supports a pattern of Service composed of other Services and/or Resources, which IMHO meets all the use-cases needed to be supported by AllottedResource.

    Historically in ONAP lack of Service Model, lead to invention of AllottedResource. In ONAP/Dublin Amdocs hopes to contribute to Service model enhancements, which allow for defining properties on a Service and mapping them to Resource(VNF or PNF) Properties.

    Question is do we really need a new entity called AllottedResource in addition to Service and Resource or can we meet all the requirements based on Service and Resource entities.

    Attached are some slides describing what can be meet using Service & Resource.Service Model Patterns v3.pptx

    1. Keong Lim

      Each "Service" should be assigned some "Resource", however, if several "Services" can share some capacity from the same "Resource", then that "Resource" should be divided into "something" to be assigned to each different "Service" .

      Those "somethings" should be either:

      • "sub-Resources" (if such entities make sense)
      • "AllottedResources" (if entities are just anonymous/amorphous amounts of capacity)


    2. John Quilty

      No indication on how to identify Life cycle responsibility for shared resource/service. How is shared resource/service allocation/usage tracked?

  3. Michela Bevilacqua

    Hi, 

    Some comments from my side. 

    1) Gil B presented the following slide in Montreal. It clarifies that an ANF is also used to share a composite service (see Telemedice with Video_RAN and Video_Core ANFs). This does not fit well with the model proposed here where only ServiceDescAtomic has a relation with Allotted resources (in particular the ServiceProvidesa... relationship possibly to be moved to ServiceDesc). 

    2) The split of ANF and AllottedLink is not motivated here. A generic AllottedResourceDescriptor could work better to cover  the allotted service case that actually is the only case covered in the slides below.




    3) In Casablanca: the following DM was proposed: Allotted Resource TOSCA Model, is it still a valid option , maybe it should be conneced to a run time information model proposal missing here. In general it could be good to provide also the run time model before an decision about the design time model only. 


    4) It is important to clarify overall  the LCM of an Allotted resource and Allotted NFD, and actors responsabilities.