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.
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- Device Subsystem - Manages the inventory of infrastructure devices.
- Link Subsystem - Manages the inventory of infrastructure links.
- Host Subsystem - Manages the inventory of end-station hosts and their locations on the network.
- Topology Subsystem - Manages time-ordered snapshots of network graph views.
- PathService - Computes/finds paths between infrastructure devices or between end-station hosts using the most recent topology graph snapshot.
- FlowRule Subsystem - Manages inventory of the match/action flow rules installed on infrastructure devices and provides flow metrics.
- Packet Subsystem - Allows applications to listen for data packets received from network devices and to emit data packets out onto the network via one or more network devices.
The following figure illustrates the various subsystems that are part of ONOS today and a few that are planned in the near future (outlined in gray):
Subsystem Structure
Each of a subsystem's components resides in one of the three main tiers, and can be identified by one or more Java Interfaces that they implement.
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