Open implementation issues

Summary:

Single service design: single CFS with resources (VNFs+PNF). No nested services.
PNF PnP in E2E services: PNF PnP is not currently implemented in SO's CreateE2EService BPMN workflow, which is the one triggered by ExternalAPI during service instantiation
PRH team to update PNF_READY internal event: BBS needs additional info to be passed in the PNF_READY event
Service instance related info: SO team needs clarification on how those service instance metadatum are provided to SO and which data needs to be stored as metadata in AAI vs SDNC MD-SAL vs data that is only needed at orchestration time

Single service design

Nested services feature is not currently supported as expected in SO. There is a workaround involving allotted resources, but the easiest solution for us is to go with a design with a single service (CFS) and everything else as a resource underneath it (Access Connectivity, Internet Profile, CPE PNF...). This will not not impact our agreement with A&AI team for BBS. Everything that needs to be stored as metadata, can still be stored in the metadata section of the single CFS service instance. SDN-C will be creating every resource under one single service instance

@victor gao will have to handle the modeling changes so that in the service design, we can create one service with 2 VFs (Internet Profile and Access Connectivity), 1 PNF (CPE-ONT), and the necessary virtual-links/CPs.
@Stavros Kanarakis will have to change the bbs-event-processor microservice implementation to reflect the fact that everything will now be under a single CFS service.


PNF PnP flow in E2E services

PNF PnP flow part currently only works for normal service orchestration (services instantiated by VID). It is not implemented for E2E services orchestration (instantiated by an External API order request). As explained by @Seshu Kumar Mudiganti, ExternalAPI can only trigger the instantiation of E2E Services in SO. 

We need to check with the SO team how to handle it. It is a priority for BBS since we have based all of our flows in the PnP flow and we make use of ExternalAPI for service ordering and instantiation.

PRH team to update PNF_READY internal event

PRH needs to send additional information (additionalFields) coming in the PNF registration event that is BBS use case specific in the PNF_READY event (attachmentPoint, accessID, CVLAN, SVLAN).
PNF_Ready is published after AAI is updated with PNF relevant information.
It is initially agreed, that PRH will copy in 1:1 fashion the contents of VES.pnfRegistration.additionalFields structure/array/Map into the PNF_READY event, along with the correlationID parameter sent there already in ONAP/Casablanca release.
This allows other applications in the flow (BBS uS, SO,...) to react based on domain specific information sent in the pnfRegistration.additionalFields in addition to the standard PNF related attributes.

Service-instance-related information

We need to provide further details for each piece of data we want to store under A&AI as part of a service instance, since SO handles service-related information.

See AAI-BBS Proposals for Dublin Release#BBSProposalsforDublinRelease-Item6.Specificdecisionsmadeforeachattribute 

Specifically

  • Where this information comes from? Ext-API when ordering a service? CL event? What is the API used?

  • Is the piece really needed to be in A&AI? (for example if only SDN-C uses it for resource controlling, then it could just come as input to its NBI and stored in MD-SAL)

  • Which component is going to use it from A&AI?





BBS Properties Per HSIA CFS Service Instance

Input Source

ONAP Components that must fetch the value from A&AI

Does it really need A&AI storage?

A&AI Metaname 

(for Metadata)

BBS Properties Per HSIA CFS Service Instance

Input Source

ONAP Components that must fetch the value from A&AI

Does it really need A&AI storage?

A&AI Metaname 

(for Metadata)

RG MAC Address

Service Order via Ext API

It also comes in the CPE Authentication Event

bbs-event-processor

DCAE microservice

(it fetches existing value from A&AI to compare it with the new value coming from PNF CPE authentication event in order to deduce if there is any mismatch)

Yes, as metadata of CFS service instance

rgw-mac-address

Correlation ID (PNF-name)

Service Order via Ext API

It also comes in the sourceName of the PNF registration event's commonEventHeader



Yes, as property of PNF object



Service Type

Service Order via Ext API

SO / bbs-apex-policy

(during Access Connectivity and Internet Profile VFCs creation & update)

Yes, as metadata of CFS service instance

service-type

Access ID

PNF registration event

SDN-C or SO? / bbs-apex-policy

(during Internet Profile VFC creation & update)

Yes, as metadata of CFS service instance

remote-id

Upstream Speed

Service Order via Ext API

SDN-C or SO? / bbs-apex-policy

(during Internet Profile VFC creation & update)

Yes, as metadata of CFS service instance

up-speed

Downstream Speed

Service Order via Ext API

SDN-C or SO? / bbs-apex-policy

(during Internet Profile VFC creation & update)

Yes, as metadata of CFS service instance

down-speed

OLT Name

PNF registration event
(extracted from attachment point)







OLT PON port

PNF registration event
(extracted from attachment point)







OLT PON slot

PNF registration event
(extracted from attachment point)







CVLAN

PNF registration event

Service Order via Ext API [optional - if not provided by Access SDN M&C]

SDN-C or SO? / bbs-apex-policy

(during Internet Profile VFC creation & update)

Yes, as metadata of CFS service instance

cvlan

SVLAN

PNF registration event

Service Order via Ext API [optional - if not provided by Access SDN M&C]

SDN-C or SO? / bbs-apex-policy

(during Internet Profile VFC creation & update)

Yes, as metadata of CFS service instance

svlan

Expected ONT ID

Service Order via Ext API [optional]

SDN-C or SO?

(for Access Connectivity VFC creation)

Yes, as metadata of CFS service instance

expected-ont-id

CPE Manufacturer

PNF registration event



Yes, as property of PNF object

Not Applicable

CPE Model

PNF registration event



Yes, as property of PNF object

Not Applicable

CPE Equipment Type

PNF registration event



Yes, as property of PNF object

Not Applicable

CPE Serial Number

PNF registration event



Yes, as property of PNF object

Not Applicable

CPE SW Version

PNF registration event 

(also present in CPE Authentication Event)



Yes, as property of PNF object

Not Applicable

Attachment Point

(Not a real BBS modeling property, since its constituent parts are captured in other model properties)

PNF registration event

bbs-event-processor

DCAE microservice

(it fetches existing value from A&AI to compare it with the new value coming from PNF re-registration event in order to deduce if it is a true relocation)

Yes, as value of link-name property of a logical-link bridged to the PNF object

Not Applicable

ONT NNI Port



CPE PNF onboarding in SDC?







OLT NNI Slot



Infrastructure bootstraping (manual script) ?







OLT NNI Port



Infrastructure bootstraping (manual script) ?