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Objective

Typically network-functions supporting NetConf Callhome do not support at the same time the VES event 'pnfRegistration'. In order inform the µServices within the SMO, a functionality as OAM-Controller level should be implemented. This function should send a VES pnfRegistration event to the VES-Collector when a new mount-point is created which is listed in the allowed devices.

As the OAM controller is listening to VES.pnfRegistration to establish NetConf sessions for "O-RAN O1 nodes" the VES:pnfRegistration invoked by the OAM-Controller must be ignored.


Sequence Diagram

NetConf/Callhome to VES-PNF-RegistrationOpenDaylight Aluminium SSH only User space SMO O-RU Operator Operator Message-Router Message-Router VES-Collector VES-Collector OAM-Controller OAM-Controller NetConf-Server-OFH NetConf-Server-OFH init [01]SET NetConfServer params for CallhomeOAM-Controller listen on port 6666 [02]GET publicKey [03]SET allowed devices with publicKey loop[Listen to pnfRegistration] [04]VES subscription use case [05]NETCONF Callhome SSH [06]NETCONF <hello/>Exchange capabilitiesincluding YANG modules for OpenFronthaul [07]create mount pointin network-topology=topology-netconf [08]VES:domain=notificationNetConf connection statuschanged to "connected" [09]publish event if mount-point:node-id is in "alloved devices" [10]VES:domain=pnfRegistrationwith 'reporter=OAM-Controller-id' [11]publish event [12]fetch pnfRegistration if 'reporter=OAM-Controller-id' [13]ignore!!! if <create-subscription/> supported [14]NETCONF Notification SubscriptionThanks to PlantUml!License: Apache 2.02021-02-06 | o-ran-sc.org


Implementation

It is assumed that the existing "MountPoint-Registrar" functionality could be enhanced.

Please note that the ODL version Aluminum does not support NetConf Callhome for TLS. It should be checked, if the OpenDaylitght version Silicon (R0 March 2021) could be used instead.

Mapping to VES pnfRegistration fields

The following mapping table bases on the capabilities of OpenDaylight version Aluminum and maps them to the VES 7.2 fields for domain 'pnfRegistration'.



(under discussion)

VES:commonEventHeader

implementation of OpenDaylight Aluminium (link)

domain

Static text "pnfRegistration"

eventId

The value of 'nt:network-topology/nt:topology/nt:node/nt:node-id'.

eventName

The value of 'nt:network-topology/nt:topology/nt:node/nt:node-id'.

eventType

Static text: "NetConf Callhome Registration"

internalHeaderFields

not mapped

lastEpochMicrosec

Time of OAM-Controller

nfcNamingCode

always ""

nfNamingCode

always ""

nfVendorName

Static text "O-RAN Alliance"

alternative: The value of ietf-hardware (RFC8348) /hardware/component[1]/mfg-name. The synchronization with the inventory of the device would delay the PNF registration event. 

priority

Static text "Normal"

reportingEntityId










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