Genius project provides Generic Network Interfaces, Utilities & Services. Any
ODL application can use these to achieve interference-free co-existence with
other applications using Genius. OpendayLight Fluorine Genius provides following
modules –

• Interface (logical port) Manager allows bindings/registration of
  multiple services to logical ports/interfaces
• Overlay Tunnel Manager creates and maintains overlay tunnels between
  configured tunnel endpoints
• Aliveness Monitor provides tunnel/nexthop aliveness monitoring services
• ID Manager generates cluster-wide persistent unique integer IDs
• MD-SAL Utils provides common generic APIs for interaction with MD-SAL
• Resource Manager provides a resource sharing framework for applications
  sharing common resources e.g. table-ids, group-ids etc.
• FCAPS Application generates various alarms and counters for the different
  genius modules
• FCAPS Framework module collectively fetches all data generated by fcaps
  application. Any underlying infrastructure can subscribe for its events to
  have a generic overview of the various alarms and counters

During Fluorine release cycle,

• Considerable enhancements were done to ITM scaling, to support more number of switches
• Support for datastore constrained transactions were added
• CSIT was added for all the new features, including SRM and ITM Direct Tunnels
• Some of the matured utilities from GENIUS were moved to a new repo called SERVICEUTILS, considering the need for their usage in other offset-0 projects including openflowplugin.