New VDU model proposal

VDU model design by using TOSCA composition

Difference between Internal VL and external VL for a VNF (defined in IFA014, the connection between VNFs) Internal VL for a VNF (defined in IFA011, the connection between VDUs) The definitions of External VL and internal VL in ETSI NFV are different, it is more appropriate to define separate capabilities for External VL and internal VL.

A subset of the VDU Composition type An Internal connection point of VDU exposed as an external connection point cap VDU_1 internalCpd_1 VDU.Compute VduCpd Internal_VL req A subset of the VDU Composition type VirtualLinksTo req VirtualComputeDescriptor cap property VirtualLinkable cap VDU.VirtualStorage VirtualLinkable property req virtual_compute VirtualStorageDescriptor input VirtualBindable VDU.ConnectTo cap VirtualBindsTo req virtual_compute input Virtual_storage virtual_storage cap req cap virtual_storage VirtualBindable artifact VirtualLinkable Substitution mappings swImage internalCpd_2 artifact ExtVirtualLinkable swImage VduCpd req subsititution_mappings: node_type: requirements: virtualLinkable: [interanlCpd_1, virtualLinkable] ExtvirtualLinkable: [interanlCpd_2, ExtvirtualLinkable] capabilities: virtual_compute: [VDU.compute, virtual_compute] virtual_storage: [VDU.storage, virtual_storage] ExtVirtualLinkable VirtualBindsTo req req VirtualBindable External_VL ExtVirtualLinksTo cap ExtVirtualLinkable

VNFD design with external connection point VDU_1 VDU_2 property property property property cap cap virtual_compute virtual_compute virtual_storage virtual_storage req req VirtualLinkable VirtualLinkable Internal_VL ExtVirtualLinkable Exposed as VnfExtCpD cap VirtualLinkable External_VL ExtVirtualLinksTo cap ExtVirtualLinkable