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NSD Requirements:

1,  VFC project requirement

  • VFC project implement ETSI NFVO, which needs to consume the NSD. 
    Image Added
  • VFC needs to expose NFVO northbound SOL005 interfaces to SO or OSS/BSS/3GPP Management System
    JIRA : VFC-635/VFC-648

                    Image Added                    

                  Image Added


2,  NSD vs ServiceD differences:

             Service Descriptor in SDC R3:    Service composites many resources in the SDC, including SDC AID resources(vf, extVL, AllottedResource) and R2+ resources.

             NSD in VFC:   NSD composites VNFD, PNFD, and NSVirtualLink, nested NSD, etc,  ETSI NFV resources.

             NSD requires to do some limitation in NFV resources composition, not all the SDC resources and substitution_mappings to NS TOSCA node


NSD related work pages:

     R3 NetworkServiceModel

     ONAP R2+ Design-Time Service DM Input.

     PNF resource IM proposal

     Network Service Descriptor Model - Based on R2


Panel
borderStylesolid
titleNode Type
Node Type:VNF
Code Block
firstline1
titletosca.nodes.nfv.NS
linenumberstrue
collapsetrue
  tosca.nodes.nfv.NS:
      derived_from: tosca.nodes.Root
      properties: 
        ns_id:
#nsd_identifier:

          type: string
description
required:
Identifier of this NSD information element. It Globally uniquely identifies an instance of the NSD. 
 true
        designer:
          type: string
          required: true
designer
version:
          type: string
description: Designer of the NSD.
  required: true
        name:
required
  type:
true
string
version:
    required: true
type
invariant_id:
string
description
type:
Version
string
of
this NSD 
        required: true
name
capabilities:
#nsd_name:
type
#monitoring_parameter:
string
description:
Provides
#
the
modelled
human
as
readable
ad
name
hoc
of
capabilities
the
in
NSD. 
VNF node template
required
requirements:
true
invariant_id: #nsd_invariant_id
- virtual_link:
type
    capability:
string
description:
Identifies
an
NSD in a version independent manner. This attribute is invariant across versions of NSD.
 tosca.capabilities.nfv.VirtualLinkable
            relationship:
required:
true
requirements: 
tosca.relationships.nfv.VirtualLinksTo
-
virtualLink: 
   node: tosca.nodes.nfv.NsVirtualLink
capability:
# tosca.
capabilities
nodes.nfv.
VirtualLinkable
VL
relationship: tosca.relationships.nfv.VirtualLinksTo
    occurrences: [ 0, UNBOUNDED ]
Code Block
firstline1
titletosca.nodes.nfv.VNF
linenumberstrue
collapsetrue
refer to https://wiki.onap.org/display/DW/Node+Type #tosca.nodes.nfv.VNF:
Code Block
firstline1
titletosca.nodes.nfv.
PNF
linenumberstrue
collapsetrue
tosca.nodes.nfv.
VNF
PNF:
    derived_from: tosca.nodes.Root
    properties: 
      descriptor_id:
#vnfd
# instead of pnfd_id
:

        type: string
description
required:
Identifier of this VNFD information element. This attribute shall be globally unique.
 true
      provider:
        type: string
        required: true
      version:
#vnfd_version:

        type: string
        required: true
description: Identifies the version of the VNFD. 
descriptor_invariant_id:
        type: string
provider: #vnf_provider:
# GUID
type
required:
string
true
      name:
description:
Provider
of
the
VNF
and
of the VNFD.
type: string
        required: true
vnf
function_
product_name
description:
        type: string
description: Name to identify the VNF Product. Invariant for the VNF Product lifetime. 
required: true
      #geographical_location_info:        
      #  type: TBD
      #  required: true
    requirements:
vnf_software_version
     - virtual_link:
type
   capability:
string 
tosca.capabilities.nfv.VirtualLinkable
required: true 
  relationship: tosca.relationships.nfv.VirtualLinksTo
Code Block
firstline1
titletosca.nodes.nfv.NsVirtualLink
linenumberstrue
collapsetrue
  tosca.nodes.nfv.NsVirtualLink:
     derived_from:
description:
>
 tosca.nodes.Root
       description:
Software
node
version
definition of
the VNF. 
 Virtual Links
     properties:
       provider:
This
is
changed
when
there
is
any
type:
change
string
to
the
software
that
is
included
in
the
VNF
required:
Package.
false
vnfm_info
version:
         type: string
         required: true
       vl_profile
description:
>
 
      type: tosca.datatypes.nfv.VlProfile # only
Identifies VNFM(s) compatible with the VNF described in this version of the VNFD. 
covers nin/max bitrate requirements
         required: true
       connectivity_type:
valueRange: use the name of micro-service of the vnfm drive. 
     type: tosca.datatypes.nfv.ConnectivityType
         required: true
       qos:
For
vendor
specific VNFM, the value composes of "vendorname" and "vnfmdriver", e.g. "mycompanyvnfmdriver"; 
type: tosca.datatypes.nfv.Qos
         required: false
       service_availability:
for
generic
VNFM,
the
value
is "gvnfmdriver". 
type: tosca.datatypes.nfv.ServiceAvailability
requirements
required: false
- virtualLink
capabilities:
capability
VirtualLinkable:
tosca.capabilities.nfv.VirtualLinkable
relationship
type: tosca.
relationships
capabilities.nfv.
VirtualLinksTo
VirtualLinkable
nodesNsVirtualLinkDesc
Panel
borderStylesolid
titleData Type:
Code Block
firstline1
titletosca.
datatypes.nfv.
ConnectivityType
linenumberstrue
collapsetrue
tosca.
nodes
datatypes.nfv.
NsVirtualLinkDesc
ConnectivityType:

  derived_from: tosca.
nodes
datatypes.Root
  properties:
description
layer_protocol:
External
virtual
link
used
in
network
type:
service.
string
properties
  required: true
id: #virtual_link_desc_id: 
constraints:
        - valid_values: [ethernet, mpls, odu2, ipv4, ipv6, pseudo_wire ]  
    flow_pattern:
      
type: string
      
required:
true
false
      constraints:
description:
Identifier
of
the
NsVirtualLinkDesc
information element. It uniquely identifies a VLD. provider: #vitual_link_desc_provider
- valid_values: [Line, Tree, Mesh]
Code Block
firstline1
titletosca.datatypes.nfv.ServiceAvailability
linenumberstrue
collapsetrue
tosca.datatypes.nfv.ServiceAvailability:
   derived_from: tosca.datatypes.Root
   description: service availability 
   properties:
     Level:
       type: string
       description: service availability levels
       required:
false
true
       constraints:
description
  - valid_values: [ Level1, Level2,Level3 ]


 

Panel
borderStylesolid
titleCapability
Code Block
firstline1
titletosca.capabilities.nfv.VirtualLinkable
linenumberstrue
collapsetrue
tosca.capabilities.nfv.VirtualLinkable:
    derived_from: tosca.capabilities.network.Linkable
Panel
borderStylesolid
titleRelationship
Code Block
firstline1
titletosca.relationships.nfv.VirtualLinksTo
linenumberstrue
collapsetrue
tosca.relationships.nfv.VirtualLinksTo:
    derived_from: tosca.relationships.DependsOn
    valid_target_types: [ tosca.capabilities.nfv.VirtualLinkable ]
Panel
borderStylesolid
titleNS Example
Code Block
firstline1
titleNS Example
linenumberstrue
collapsetrue
tosca_definitions_version:
tosca_simple_yaml_1_1
metadata:
  ...
imports:
- nodes:
    file: nodes.yml
- datatypes:
    file: data.yml
- capabilities:
    file: capabilities.yml
-relationships:
    file: relationships.yml


topology_template:
  inputs:
    # omitted here for brivity
  substitution_mappings:
    node_type: tosca.nodes.nfv.NS.example
node_templates:
    NsVL1:
Defines the organization generating the VLD. version: #virtual_link_desc_version: type: string required: true description: Specifies the version of the VLD. connectivity_type: 
    type: tosca.
datatypes
nodes.nfv.
ConnectivityType
NsVirtualLink
      properties:
required: true
   ...
    NsVL2:
description
  type:
Specifies the protocol exposed by a VL and the flow pattern supported by the VL.
tosca.nodes.nfv.NsVirtualLink
      properties:     ...
    VNF1:
test_access:
type: tosca.nodes.nfv.VNF.VNF1
      properties:
type: list
...
      requirements:
entry_schema:
- virtualLink1: NsVL2
    VNF2:
      type:
string
tosca.nodes.nfv.VNF.VNF2
required
properties:
false
...
      requirements:
description:
>
 
    - virtualLink1: NsVL1
Specifies
test
access
facilities
expected
VNF3:
on
the
VL
 
  type: tosca.nodes.nfv.VNF.VNF3
      properties:
(e
..
g
.
none,
passive
monitoring,
or
active (intrusive) loopbacks at endpoints). 
 requirements:
        -
description
virtualLink1: NsVL1
type
- virtualLink2:
string
NsVL2
    PNF1:
required: false 
type:tosca.nodes.nfv.PNF.PNF1
      properties: ...
description:
> 
   requirements:
Provides
human-readable
information
on
-
the purpose of the virtual link (e.g. VL for control plane traffic). capabilities:
virtualLink1: NsVL1

###################VNF1 Template ##################
   .....
  substitution_mappings: 
    requirements: 
      virtualLink1:
virtual_linkable: 
- ext_port_1
      - virtual_link
    node_type: tosca.
capabilities
nodes.nfv.
VirtualLinkable

Data Type:

Code Block
firstline1
titletosca.datatypes.nfv.ConnectivityType
linenumberstrue
collapsetrue
tosca.datatypes.nfv.ConnectivityType: derived_from: tosca.datatypes.Root properties
VNF.VNF1


###################VNF2 Template ##################
   .....
  substitution_mappings: 
    requirements:
layer_protocol:
  virtualLink1:
type: string
- ext_port_1
required: true
- virtual_link
    node_type:
constraints:
tosca.nodes.nfv.VNF.VNF2


###################VNF3 Template ##################
   .....
  substitution_mappings:
-
valid_values
requirements:
[ethernet, mpls, odu2, ipv4, ipv6, pseudo_wire ] 

      virtualLink1: 
      -
flow_pattern:
ext_port_1
type: string
- virtual_link
required
virtualLink2:
false
constraints: 
- ext_port_2
      -
valid_values: [Line, Tree, Mesh]

Capability:

Code Block
firstline1
titletosca.capabilities.nfv.VirtualLinkable
linenumberstrue
collapsetrue
tosca.capabilities.nfv.VirtualLinkable:
    derived_from: tosca.capabilities.network.Linkable

Relationship:

Code Block
firstline1
titletosca.relationships.nfv.VirtualLinksTo
linenumberstrue
collapsetrue
tosca.relationships.nfv.VirtualLinksTo: derived_from: tosca.relationships.DependsOn valid_target_types: [ tosca.capabilities.nfv.VirtualLinkable ]
virtual_link
    node_type: tosca.nodes.nfv.VNF.VNF3


###################PNF1 Template ##################
   .....
  substitution_mappings: 
    requirements: 
      virtualLink1: 
      - ext_port_1
      - virtual_link
    node_type: tosca.nodes.nfv.PNF.PNF1