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Scope
Color codingThe 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.
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 topology-types
| +--rw nettop:topology-netconf! +--rw node* [node-id]
| +--rw node-id node-id
| +--rw (nettop:credentials)?
| | +--:(nettop:login-pw)
| | | +--rw nettop:login-password
| | | +--rw nettop:username? string
| | | +--rw nettop:password? string
| | +--:(nettop:key-auth)
| | +--rw nettop:key-based
| | +--rw nettop:key-id? string
| | +--rw nettop:username? string
| +--rw nettop:host? inet:host
| +--rw nettop:port? inet:port-number
| +--rw nettop:protocol
| | +--rw nettop:name? enumeration
| | +--rw (nettop:specification)?
| | +--:(nettop:tls-case)
| | +--rw nettop:tls
| | +--rw nettop:excluded-versions* string
| +--rw nettop:yang-module-capabilities
| | +--rw nettop:override? boolean
| | +--rw nettop:capability* string
| +--rw nettop:non-module-capabilities
| +--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
| +--rw nettop:pass-through
module: odl-netconf-callhome-server
+--rw netconf-callhome-server
+--rw global!
| +--rw credentials!
| | +--rw username string
| | +--rw passwords* string
| +--rw accept-all-ssh-keys? boolean
| +--rw mount-point-naming-strategy? enumeration
+--rw allowed-devices
+--rw device* [unique-id]
+--rw unique-id string
x--rw ssh-host-key? string
+--rw credentials!
| +--rw username string
| +--rw passwords* 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
|