1. New VDU model proposal

2. VDU model design by using TOSCA composition

3. 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.

4. 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

5. 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