Allotted Resource
Classes
AllottedLink
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
Preliminary | Unique identifier of this internal VLD in VNFD.
|
connectivityType | ConnectivityType | 1 | OpenModelAttribute
Preliminary | Specifies the protocol exposed by a VL and the flow pattern supported by the VL.
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testAccess | String | 0..* | OpenModelAttribute
Preliminary | Specifies test access facilities expected on the VL (e.g. none, passive monitoring, or active (intrusive) loopbacks at endpoints).
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description | String | 0..1 | OpenModelAttribute
Preliminary | Provides human-readable information on the purpose of the VL (e.g. control plane traffic).
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monitoringParameter | MonitoringParameter | 0..* | OpenModelAttribute
Preliminary | Defines the virtualised resources monitoring parameters on VLD level.
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_virtuaLlinkDescFlavour | VirtualLinkDescFlavour | 1..* | OpenModelAttribute
Preliminary | Describes a specific flavour of the VL with specific bitrate requirements.
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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
Preliminary | Provider of the VNF and of the VNFD.
|
vnfProductName | String | 1 | OpenModelAttribute
Preliminary | Name to identify the VNF Product. Invariant for the VNF Product lifetime.
|
vnfSoftwareVersion | String | 1 | OpenModelAttribute
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
Preliminary | Identifies the version of the VNFD.
|
vnfProductInfoName | String | 0..1 | OpenModelAttribute
Preliminary | Human readable name for the VNF Product. Can change during the VNF Product lifetime.
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vnfProductInfoDescription | String | 0..1 | OpenModelAttribute
Preliminary | Human readable description of the VNF Product. Can change during the VNF Product lifetime.
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vnfmInfo | String | 0..* | OpenModelAttribute
Preliminary | Identifies VNFM(s) compatible with the VNF described in this version of the VNFD.
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localizationLanguage | String | 0..* | OpenModelAttribute
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
Preliminary | Defines the VNF-specific extension and metadata attributes of the VnfInfo that are writeable via the ModifyVnfInfo operation.
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vnfdId | Identifier | 1 | OpenModelAttribute
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.
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defaultLocalizationLanguage | String | 0..1 | OpenModelAttribute
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.
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configurableProperties | VnfConfigurableProperties | 0..1 | OpenModelAttribute
Preliminary | Describes the configurable properties of the VNF (e.g. related to auto scaling and auto healing).
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lifecycleManagementScript | LifecycleManagementScript | 0..* | OpenModelAttribute
Preliminary | Includes a list of events and corresponding management scripts performed for the VNF.
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logo | String | 0..1 | OpenModelAttribute
Preliminary | File path of the vendor specified logo.
|
guide | String | 0..1 | OpenModelAttribute
Preliminary | UUID of the vendor guide/documentation which is attached to VNF and can be downloaded from the model.
|
_vdu | Vdu | 1..* | OpenModelAttribute
Preliminary | Virtualisation Deployment Unit.
|
_vnfExtCpd | VnfExtCpd | 1..* | OpenModelAttribute
Preliminary | Describes external interface(s) exposed by this VNF enabling connection with a VL.
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_deploymentFlavour | VnfDf | 1..* | OpenModelAttribute
Preliminary | Describes specific DF(s) of a VNF with specific requirements for capacity and performance.
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_vnfIndicator | VnfIndicator | 0..* | OpenModelAttribute
Preliminary | Declares the VNF indicators that are supported by this VNF.
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_virtualComputeDesc | VirtualComputeDesc | 0..* | OpenModelAttribute
Preliminary | Defines descriptors of virtual compute resources to be used by the VNF.
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_virtualStorageDesc | VirtualStorageDesc | 0..* | OpenModelAttribute
Preliminary | Defines descriptors of virtual storage resources to be used by the VNF.
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_intVirtuallinkdesc | LinkDesc | 0..* | OpenModelAttribute
Preliminary | Represents the type of network connectivity mandated by the VNF provider between two or more CPs which includes at least one internal CP.
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_vnfReservedCpd | VduCpd | 0..* | OpenModelAttribute
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.
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_elementGroup | VnfdElementGroup | 0..* | OpenModelAttribute
Preliminary | Describes the associated elements of a VNFD for a certain purpose during VNF lifecycle management.
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5 Comments
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).![](/rest/documentConversion/latest/conversion/thumbnail/45295311/1)
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
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:
John Quilty
No indication on how to identify Life cycle responsibility for shared resource/service. How is shared resource/service allocation/usage tracked?
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.