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 figure below summarizes the relationships of the subsystem components. The top and bottom dotted lines in the figure represent the inter-tier boundaries created by the northbound and southbound APIs, respectively.
Provider
The lowest tier of the ONOS stack, Providers interface with the network via protocol-specific libraries, and with the core via the ProviderService interface.
...