Due to a ransomware attack, the wiki was reverted to a July 2022 version. . We apologize for the lack of a more recent valid backup.
...
The ProviderId carries a URI scheme designation to allow for loosely pairing devices with providers from an alternate provider family, and for this to be possible without access to the Provider itself.
Multiple Providers
A Subsystem may be associated with multiple providers. In such cases, Providers are designated as either primary or ancillary. The primary provider owns the entities associated with its service, with ancillary providers contributing their information as overlays. This approach gives precedence to the principal provider information, should any overlay result in conflicts with the underlay information.
The Device Subsystem is one such service capable of supporting multiple Providers.
Manager
A component residing in the core, the Manager receives information from Providers and serves it to applications and other services. It exposes several interfaces :
...
ONOS maintains protocol-agnostic representations of various network elements and properties. Events carry these representations as their subject body. These representations are built from the information found in Descriptions by the system core.
Further discussion about network representations can be found in [Network Representation].