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Scope
The page will discuss and document the necessary yang modules to be supported by O-DU to ensure the end-to-end functionality of the D-Release use case "Closed loop".
As O-RAN alliance does not provide solid yang models yet, other data models needs to be defined or selected.
Idea
From SMO point of view the O-DU should provide a capability to "manage" the expected NetConf Server connections (O-RAN OpenFronthaul M-Plane) representing O-RUs.
The O-RU will connect via NetConf Call Home/TLS to the O-DU. Therefore the O-DU must be configured in advance with the public key of potential O-RUs.
Exactly this function is implemented by the OpenDaylight project and YANG modules to mimic a potential O1 interface are available.
However, OpenDaylight also supports pre-configured NetConf servers with all its connection related details and NetConf Call Home via SSH. Those parameters and object classes could be ignored for the O-RAN-SC D-Release Use Case.
All the YANG modules can be found in the attachments:
| Attachments |
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Minimum parameter set to be supported
The following yang tree shows only a necessary (to be discussed) selection of parameters within the yang capabilities of OpenDaylight forconfiguration and supervision of NetConf Servers by a NetConf Client (O-DU).
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module: network-topology
+--rw network-topology
+--rw topology* [topology-id]
+--rw topology-id topology-id
+--rw node* [node-id]
| +--rw node-id node-id
| +--ro nettop:available-capabilities
| | +--ro nettop:available-capability* []
| | +--ro nettop:capability? string
| | +--ro nettop:capability-origin? enumeration
| +--ro nettop:unavailable-capabilities
| | +--ro nettop:unavailable-capability* []
| | +--ro nettop:capability? string
| | +--ro nettop:failure-reason? enumeration
module: odl-netconf-callhome-server
+--rw netconf-callhome-server
+--rw allowed-devices
+--rw device* [unique-id]
+--rw unique-id string
+--rw (transport)?
| +--:(ssh)
| | +--rw ssh-client-params
| | +--rw host-key string
| | +--rw credentials!
| | +--rw username string
| | +--rw passwords* string
| +--:(tls)
| +--rw tls-client-params
| +--rw certificate-id string
| +--rw key-id string
+--ro callhome-status:device-status? enumeration
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